Crack detection mechanism of ultrasonic sensor sheet

Abstract

The utility model relates to the field of ultrasonic sensor piezoelectric ceramic piece detection equipment, and discloses a crack detection mechanism of an ultrasonic sensor piece, which comprises a detection frame, a conveyor belt is fixedly connected in the detection frame, a fixed frame is fixedly connected on the upper surface of the detection frame, a recognizer is fixedly connected on the top surface in the fixed frame, and a piezoelectric ceramic piece is fixedly connected on the recognizer. A beating device is arranged on the right side of the detection frame, an electric push rod is fixedly connected to the inner top surface of the fixed frame, a moving rod is fixedly connected to the bottom end of the electric push rod, a limiting plate is arranged on the front side of the moving rod, and a moving unit is arranged in the moving rod. According to the utility model, through the cooperation of the electric push rod, the moving rod, the moving unit, the limiting plate, the guide inclined plate and the limiting unit, the movement of the ultrasonic sensor sheets with different sizes can be guided and limited, so that the piezoelectric ceramic sheet can accurately reach the lower part of the recognizer for detection.

Description

Technical Field

[0001] The utility model relates to the field of ultrasonic sensor piezoelectric ceramic sheet detection equipment, in particular to a crack detection mechanism for ultrasonic sensor sheets. Background Technique

[0002] An ultrasonic sensor is a sensor developed using the characteristics of ultrasonic waves. Due to its reliable operation, convenient installation, waterproof property, small emission angle, high sensitivity and other characteristics, it has been widely used. Piezoelectric ceramics are commonly used materials for making ultrasonic sensor probes. Therefore, the quality of piezoelectric ceramic sheets affects the service life and effect of ultrasonic sensors. Therefore, the quality inspection of ultrasonic sensors is very important. Once there are problems such as cracks in the piezoelectric ceramic sheets, it will affect the use of ultrasonic sensors.

[0003] After retrieval, the Chinese patent publication number: CN220709082U discloses a crack detection device for ceramic products, including a knocking component. The turntable at the top of the rotating rod is driven to rotate by a first ordinary motor, driving the round rod to perform a circular motion. When the round rod moves, the sliding rods fixedly connected to both sides of the collar are driven to reciprocate in the fixed block, driving the striking block to strike the ceramic product to make a sound, so that the recognition mechanism can recognize.

[0004] However, in the actual use process of the above detection device, during the process of conveying the piezoelectric ceramic sheet through the conveyor belt, if the piezoelectric ceramic sheet is of a small size, it will shift during movement on the conveyor belt, resulting in the piezoelectric ceramic sheet not being accurately positioned below the identifier. With the change of the detection distance, it will affect the detection result of the piezoelectric ceramic sheet. For this reason, a crack detection mechanism for ultrasonic sensor sheets is proposed to solve the above problems. Summary of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a crack detection mechanism for ultrasonic sensor sheets, aiming to improve the problem that the ceramic sheet will shift on the conveyor belt during the detection of piezoelectric ceramic sheets of different specifications, resulting in affecting the detection result.

[0006] To achieve the above object, the utility model adopts the following technical solutions: A crack detection mechanism for an ultrasonic sensor chip, including a detection frame, a conveyor belt is fixedly connected inside the detection frame, a fixed frame is fixedly connected to the upper surface of the detection frame, an identifier is fixedly connected to the inner top surface of the fixed frame, a knocker is arranged on the right side of the detection frame, an electric push rod is fixedly connected to the inner top surface of the fixed frame, a moving rod is fixedly connected to the bottom end of the electric push rod, a limiting plate is arranged on the front side of the moving rod, a moving unit is arranged inside the moving rod, and the moving unit is used to control the left and right movement of the limiting plate. The front end of the limiting plate is hinged with a guiding inclined plate, and a limiting unit is arranged at the front end of the guiding inclined plate, and the limiting unit is used for limiting the front end of the guiding inclined plate.

[0007] As a further description of the above technical solution:

[0008] The knocker includes a motor, an L-shaped rotating rod, an elastic member and a knocking block. The motor is fixedly connected to the right surface of the detection frame. The left output end of the motor is fixedly connected to the right end of the L-shaped rotating rod. The bottom end of the L-shaped rotating rod is fixedly connected to the top end of the elastic member. The upper end of the knocking block is fixedly connected to the bottom end of the elastic member.

[0009] As a further description of the above technical solution:

[0010] The moving unit includes a moving groove. The moving groove is opened on the front surface of the moving rod. A bidirectional lead screw is rotatably connected to the inner wall surface of the right side of the moving groove. A handle is arranged on the left side of the moving rod. A moving block is threadedly connected to the outside of the bidirectional lead screw. A slider is fixedly connected to the front end of the moving block. A rubber pad is fixedly connected to the center of the front surface of the moving rod.

[0011] As a further description of the above technical solution:

[0012] The limiting unit includes a limiting block. The limiting block is hinged to the front end of the guiding inclined plate. A guiding groove is opened on the inner wall surface of the detection frame.

[0013] As a further description of the above technical solution:

[0014] The right end of the handle penetrates through the moving rod, and the right end of the handle is fixedly connected to the left end of the bidirectional lead screw.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the moving block is mutually attached to the inner wall of the moving groove. A sliding groove is opened on the back surface of the limiting plate. The slider is slidably connected inside the sliding groove.

[0017] As a further description of the above technical solution:

[0018] The limiting block is slidably connected to the inside of the guiding groove.

[0019] As a further description of the above technical solution:

[0020] The left end of the L-shaped rotating rod penetrates through the detection frame.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, through the cooperation of the electric push rod, the moving rod, the moving unit, the limiting plate, the guiding inclined plate and the limiting unit, the movement of ultrasonic sensor chips of different sizes can be guided and limited, so that the piezoelectric ceramic chip can accurately reach below the identifier for detection, avoiding the deviation of the ceramic chip on the conveyor belt and affecting the knocking detection result. At the same time, before knocking, it can drive the rubber pad to move upward to avoid affecting the vibration and sound generation of the ceramic chip.

[0023] 2. In the utility model, through the cooperation of the motor, the L-shaped rotating rod, the elastic member and the knocking block, ceramic chips of different thicknesses can be knocked, and the change of the thickness of the piezoelectric ceramic chip can be avoided, resulting in the shortening of the movable stroke of the knocking block, the increase of the motor load and the influence on the service life of the knocker. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the whole crack detection mechanism of an ultrasonic sensor chip proposed by the utility model;

[0025] Figure 2 It is a schematic diagram of the crack detection mechanism of an ultrasonic sensor chip proposed by the utility model Figure 1 Schematic diagram of part A;

[0026] Figure 3 It is a schematic diagram of the electric push rod, the moving rod, the moving unit, the limiting plate and the guiding inclined plate of the crack detection mechanism of an ultrasonic sensor chip proposed by the utility model;

[0027] Figure 4 It is a schematic diagram of the bidirectional lead screw, the moving block, the slider, the limiting plate and the sliding groove of the crack detection mechanism of an ultrasonic sensor chip proposed by the utility model;

[0028] Figure 5 It is a schematic diagram of the knocker of the crack detection mechanism of an ultrasonic sensor chip proposed by the utility model.

[0029] Legend Explanation:

[0030] 1. Detection frame; 2. Conveyor belt; 3. Fixed frame; 4. Identifier; 51. Motor; 52. L-shaped rotating rod; 53. Elastic member; 54. Knocking block; 6. Electric push rod; 7. Moving rod; 71. Moving groove; 72. Bi-directional lead screw; 73. Handle; 74. Moving block; 75. Slide block; 76. Rubber pad; 8. Limiting plate; 81. Slide groove; 9. Guide inclined plate; 91. Limiting block; 92. Guide groove. Detailed implementation manner

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Refer to Figure 1 , an embodiment provided by the present invention: a crack detection mechanism for an ultrasonic sensor chip, including a detection frame 1. A conveyor belt 2 is fixedly connected inside the detection frame 1. When an ultrasonic sensor chip is placed at the front end of the upper surface of the conveyor belt 2, starting the conveyor belt 2 can drive the ceramic chip to move backward for crack detection. A fixed frame 3 is fixedly connected to the upper surface of the detection frame 1. An identifier 4 is fixedly connected to the inner top surface of the fixed frame 3. The identifier 4 can identify the sound generated by knocking the piezoelectric ceramic chip to judge whether there are cracks inside the ceramic chip, and can cooperate with a warning lamp or a waste product treatment mechanism arranged later to remind the staff or directly process the waste ceramic chips. This is a prior art means in this field and will not be elaborated here. A knocker is arranged on the right side of the detection frame 1, and the knocker can knock the ceramic chip that reaches below the fixed frame 3.

[0033] Refer to Figures 2 - 4The inner top surface of the fixed frame 3 is fixedly connected with an electric push rod 6, and the bottom end of the electric push rod 6 is fixedly connected with a moving rod 7. When the electric push rod 6 is started, it can drive the moving rod 7 to perform linear motion in the up and down directions. A limit plate 8 is provided on the front side of the moving rod 7. A moving unit is provided inside the moving rod 7. The moving unit includes a moving groove 71. The moving groove 71 is opened on the front side surface of the moving rod 7. A bidirectional screw rod 72 is rotatably connected to the right inner wall surface of the moving groove 71. A handle 73 is provided on the left side of the moving rod 7. The right end of the handle 73 passes through the moving rod 7. The right end of the handle 73 and the left end of the bidirectional screw rod 72 are connected. The two ends are fixedly connected, and the staff can drive the two-way screw rod 72 to rotate through the handle 73. The outer side of the two-way screw rod 72 is threadedly connected with a moving block 74. There are two moving blocks 74, which are respectively threadedly connected to the left and right sides of the two-way screw rod 72. The outer wall of the moving block 74 fits with the inner wall of the moving groove 71. The inner wall of the moving groove 71 can guide and limit the movement of the moving block 74, so that the moving block 74 can only perform linear motion in the left and right directions. The front end of the moving block 74 is fixedly connected with a slider 75, and when the moving block 74 moves, it can drive the slider 75 to move synchronously.

[0034] The back of the limit plate 8 is provided with a slide groove 81, and the slider 75 is slidably connected with the inside of the slide groove 81. The slide groove 81 can guide and limit the movement of the slider 75, so that the slider 75 can only perform linear motion in the up and down directions inside the slide groove 81, and cannot escape from the slide groove 81. When the moving block 74 performs linear motion in the left and right directions, the limit plate 8 can be moved synchronously through the cooperation of the slider 75 and the slide groove 81. When the moving block 74 moves upward, the slider 75 can be driven to move synchronously. At this time, the slider 75 can move upward inside the slide groove 81, and will not affect the state of the limit plate 8 when it does not exceed the upper limit of the slide groove 81. A rubber pad 76 is fixedly connected to the center of the front side surface of the moving rod 7. When the ceramic piece moves to the front side of the moving rod 7 through the conveyor belt 2, it will be blocked by the rubber pad 76, and the impact force of the piezoelectric ceramic piece is buffered by the flexible deformation of the rubber pad 76, thereby avoiding damage to the piezoelectric ceramic piece and the moving rod 7.

[0035] A guide bevel plate 9 is hinged at the front end of the limit plate 8. There are two limit plates 8, which are respectively hinged on the front surfaces of the two movable blocks 74 on the left and right sides of the bidirectional screw rod 72. The guide bevel plate 9 can rotate around the hinge with the limit plate 8. The two guide bevel plates 9 hinged at the front ends of the two limit plates 8 are inclined toward the side away from the center of the detection frame 1. The movement of the ceramic piece on the conveyor belt 2 can be guided and limited by the guide bevel plate 9. When the ceramic piece moves to the guide bevel plate 9, it can move along the inclined surface of the guide bevel plate 9 to the center of the conveyor belt 2, so that the ceramic piece can be centered and accurately moved to the bottom of the identifier 4 for detection to avoid offset.

[0036] A limiting unit is provided at the front end of the guiding inclined plate 9. The limiting unit includes a limiting block 91 which is hinged to the front end of the guiding inclined plate 9. A guiding groove 92 is formed on the inner wall surface of the detection frame 1. The limiting block 91 is slidably connected to the inside of the guiding groove 92. The limiting block 91 can perform linear motion in the front-rear direction inside the guiding groove 92. Thus, through the cooperation of the limiting block 91 and the guiding groove 92, the front end of the guiding inclined plate 9 can be guided and limited, so that the front end of the guiding inclined plate 9 remains in contact with the inner wall of the detection frame 1 and can rotate at the same time.

[0037] When detecting ceramic chips of different sizes, the staff can rotate the handle 73 to drive the bidirectional lead screw 72 to rotate, and then drive the moving block 74 to perform linear motion in the left-right direction under the limitation of the moving groove 71, so that the distance between the two limiting plates 8 can be adjusted according to the size of the ceramic chip. At the same time, the guiding inclined plate 9 arranged on the front side can perform corresponding rotational adjustment under the cooperation of the limiting unit, so that the guiding inclined plate 9 can always maintain the guiding and limiting of the movement of the ceramic chip, so that the ceramic chip can accurately enter the gap between the two limiting plates 8 and then accurately reach below the identifier 4 for detection, avoiding the deviation of the ceramic chip during movement above the conveyor belt 2, resulting in the inability to accurately reach below the identifier 4 for detection and affecting the detection result. Before detection, the electric push rod 6 can be started to drive the moving rod 7 to move upward to release the blockage of the rubber pad 76 on the piezoelectric ceramic chip, so that after the detection of the piezoelectric ceramic chip is completed, the conveyor belt 2 can directly move backward for subsequent processing when it starts. At the same time, it is avoided that after the beater knocks the piezoelectric ceramic chip, the vibration of the piezoelectric ceramic chip is buffered and absorbed by the rubber pad 76, resulting in the influence on the generated sound and further affecting the detection result.

[0038] Refer to Figure 1 and Figure 5, the knocker includes a motor 51, an L-shaped rotating rod 52, an elastic member 53, and a knocking block 54. The motor 51 is fixedly connected to the right surface of the detection frame 1. The left output end of the motor 51 is fixedly connected to the right end of the L-shaped rotating rod 52. When the motor 51 is started, it can drive the L-shaped rotating rod 52 to rotate. The left end of the L-shaped rotating rod 52 penetrates through the detection frame 1. The bottom end of the L-shaped rotating rod 52 is fixedly connected to the top end of the elastic member 53. The upper end of the knocking block 54 is fixedly connected to the bottom end of the elastic member 53. After the piezoelectric ceramic sheet is blocked by the rubber pad 76, the motor 51 can be started to drive the knocking block 54 to rotate downward through the L-shaped rotating rod 52 and the elastic member 53, so that the knocking block 54 can knock on the piezoelectric ceramic sheet. At the same time, when the motor 51 is started, the rotation angle of the L-shaped rotating rod 52 is the same, so that the preset moving distance of the knocking block 54 is the same. When knocking on piezoelectric ceramic sheets of different thicknesses, the knocking block 54 can move to squeeze the elastic member 53, so that the knocking block 54 moves upward relative to the L-shaped rotating rod 52, avoiding the knocking block 54 being blocked in advance when knocking on a thicker ceramic sheet, which causes the load of the motor 51 to increase and affects the service life of the knocker.

[0039] Working principle: After placing the piezoelectric ceramic sheet of the ultrasonic sensor on the front end of the conveyor belt 2, the staff can rotate the handle 73 to drive the bidirectional lead screw 72 to rotate, so that the two limit plates 8 move in opposite directions horizontally under the cooperation and limitation of the moving block 74, the moving groove 71, the slider 75, and the sliding groove 81, so that the distance between the two limit plates 8 matches the size of the piezoelectric ceramic sheet. Subsequently, the conveyor belt 2 can be started to drive the piezoelectric ceramic sheet to move backward. After being guided and limited by the guiding inclined plate 9, the ceramic sheet can accurately enter the gap between the two limit plates 8 for precise positioning, so that the ceramic sheet can accurately enter below the identifier 4. Then, the electric push rod 6 is started to drive the moving rod 7 to move upward to avoid the rubber pad 76 from hindering the vibration and sound generation of the piezoelectric ceramic sheet and affecting the detection result. At this time, the motor 51 can be started to drive the knocking block 54 to rotate to knock on the ceramic sheet, so that the ceramic sheet vibrates and generates sound. The identifier 4 can distinguish and judge the emitted sound. When it is judged that there is a crack in the ceramic product, the staff can be reminded or cooperate with the waste treatment mechanism set behind to process the waste ceramic sheet to complete the detection, and the operation is simple.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crack detection mechanism for an ultrasonic sensor sheet, comprising a detection frame (1), characterized in that: The detection frame (1) is fixedly connected to a conveyor belt (2) inside, the upper surface of the detection frame (1) is fixedly connected to a fixing frame (3), the internal top surface of the fixing frame (3) is fixedly connected to an identifier (4), a knocker is arranged on the right side of the detection frame (1), the internal top surface of the fixing frame (3) is fixedly connected to an electric push rod (6), the bottom end of the electric push rod (6) is fixedly connected to a moving rod (7), a limiting plate (8) is arranged on the front side of the moving rod (7), a moving unit is arranged inside the moving rod (7), the moving unit is used to control the left and right movement of the limiting plate (8), the front end of the limiting plate (8) is hinged to a guide inclined plate (9), the front end of the guide inclined plate (9) is provided with a limiting unit, and the limiting unit is used to limit the front end of the guide inclined plate (9).

2. The crack detection mechanism of an ultrasonic sensor sheet according to claim 1, characterized in that: The knocker comprises a motor (51), an L-shaped rotating rod (52), an elastic member (53) and a knocking block (54); the motor (51) is fixedly connected to the right side surface of the detection frame (1); the left output end of the motor (51) is fixedly connected to the right end of the L-shaped rotating rod (52); the bottom end of the L-shaped rotating rod (52) is fixedly connected to the top end of the elastic member (53); and the upper end of the knocking block (54) is fixedly connected to the bottom end of the elastic member (53).

3. The crack detection mechanism of an ultrasonic sensor sheet according to claim 1, characterized in that: The moving unit comprises a moving groove (71), wherein the moving groove (71) is provided on the front side surface of the moving rod (7), a right inner wall surface of the moving groove (71) is rotatably connected with a bidirectional screw rod (72), a handle (73) is provided on the left side of the moving rod (7), an outer side of the bidirectional screw rod (72) is threadedly connected with a moving block (74), a front end of the moving block (74) is fixedly connected with a sliding block (75), and a rubber pad (76) is fixedly connected at the center of the front side surface of the moving rod (7).

4. The crack detection mechanism of an ultrasonic sensor sheet according to claim 1, characterized in that: The limiting unit comprises a limiting block (91), the limiting block (91) is hinged to the front end of the guiding inclined plate (9), and a guiding groove (92) is provided on the inner wall surface of the detection frame (1).

5. The crack detection mechanism of an ultrasonic sensor sheet according to claim 3, characterized in that: The right end of the handle (73) passes through the moving rod (7), and the right end of the handle (73) is fixedly connected to the left end of the bidirectional screw rod (72).

6. The crack detection mechanism of an ultrasonic sensor sheet according to claim 3, characterized in that: The outer wall of the moving block (74) is fitted with the inner wall of the moving groove (71), a sliding groove (81) is provided on the back of the limiting plate (8), and the sliding block (75) is slidably connected to the inside of the sliding groove (81).

7. The crack detection mechanism of an ultrasonic sensor sheet according to claim 4, characterized in that: The limiting block (91) is slidably connected to the inside of the guide groove (92).

8. The crack detection mechanism of an ultrasonic sensor sheet according to claim 2, characterized in that: The left end of the L-shaped rotating rod (52) passes through the detection frame (1).

Images