Thickness detection device

Abstract

The utility model provides a thickness detection device which comprises a rack, the rack is provided with a detection platform, a feeding conveying belt and a discharging conveying belt, the feeding conveying belt and the discharging conveying belt are connected to the two ends of the detection platform respectively, a first detection element is connected to the position, above the detection platform, of the rack in a liftable mode, and a second detection element is further connected to the position, below the detection platform, of the rack. A communication hole is formed in the detection platform, the probe of the second detection element penetrates through the communication hole in a sliding mode, and when the ground workpieces slide over the detection platform from the feeding conveying belt one by one, the probe of the first detection element and the probe of the second detection element abut against the upper end face and the lower end face of the workpieces in a sliding mode respectively. According to the thickness detection device, the outline dimension of a product can be detected without transferring the product in the discharging process after the product is ground, the detection efficiency is high, and unqualified products can be better prevented from entering the next link.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic detection of grinding workpieces, in particular to a thickness detection device. Background Art

[0002] Currently, magnetic steel is generally manufactured using powder metallurgy, and after production, it is ground using a grinding device. Grinding is the most common and widely used machining method among all mechanical processes. Most workpiece surfaces or corners require grinding to the desired design shape. To ensure that the finished product meets the design requirements, it is necessary to focus on testing the outline dimensions (length, width, or thickness) of the finished product to determine whether the workpiece grinding process has passed the test.

[0003] In the prior art, the most common method for dimensional inspection of magnetic steel after grinding is manual sampling, that is, a certain proportion of the same batch of products is sampled after processing to conduct external contour dimension inspection to confirm the qualified rate of the products. During the inspection, the products need to be transferred to the corresponding inspection equipment, which not only prolongs the production cycle, but also makes the products prone to bumps and collisions during multiple transfers, resulting in an increased breakage rate of the products. In addition, the sampling method cannot truly reflect the qualified rate of the entire batch of products, and unqualified products may be mixed in uncontrollably, affecting the authenticity of the inspection. Utility Model Content

[0004] In order to overcome at least one of the defects in the above-mentioned prior art, the utility model provides a thickness detection device, which can detect the outer contour dimensions of the product without transferring the product during the discharge process after the product is ground. The detection efficiency is high and it can better prevent unqualified products from entering the next link.

[0005] The utility model provides a thickness detection device: it comprises a frame, a loading conveyor belt, a unloading conveyor belt and a detection platform are provided on the frame, one end of the detection platform is connected with the outlet end of the loading conveyor belt, and the other end is connected with the inlet end of the unloading conveyor belt; the frame is located above the detection platform and is connected to a first detection element which can be lifted and lowered, and the frame is also connected to a second detection element which is located below the detection platform, a connecting hole is provided on the detection platform, a probe of the second detection element is slidably inserted into the connecting hole, and when the workpieces that have been ground slide one by one from the loading conveyor belt across the detection platform, the probe of the first detection element and the probe of the second detection element respectively slide and abut against the upper and lower end surfaces of the workpiece.

[0006] Compared with the prior art, the thickness detection device of the present invention has the following advantages:

[0007] The detection device of the present invention is a special mechanism, which is arranged at the discharge end of the grinder and is used for real-time detection of the workpiece after grinding. Specifically, it includes a frame arranged at the discharge end of the grinder, a detection platform is arranged on the frame, and a loading conveyor belt and a unloading conveyor belt are respectively arranged at both ends of the detection platform. A first detection element and a second detection element that can be lifted and lowered are respectively arranged above and below the detection platform. In the process of the workpiece being translated from the detection platform, the probes of the first detection element and the second detection element are respectively abutted against the upper surface and the lower surface of the workpiece, and the thickness size of the workpiece is calculated through the test data of the two detection elements. The detection elements are arranged in the upper and lower directions in such a way that the accuracy of the detection results can be better guaranteed. The lower surface of the workpiece can be used as a reference plane. The reference plane remains basically stable during the movement, and a second detection element is also arranged on the lower surface of the workpiece, so as to avoid the detection result being affected by fluctuations of the reference plane. In addition, the workpiece can be continuously and automatically passed through the detection platform under the action of the corresponding conveyor belt for detection, without the need for human intervention, and the detection efficiency is high.

[0008] As an improvement, the frame is connected to a vertically slidable fixed seat and a driving component for driving the fixed seat to slide up and down, the first detection element is connected to the fixed seat, and the fixed seat is connected to an adjustment component for adjusting the position of the first detection element in multiple dimensions.

[0009] Furthermore, the drive assembly includes a servo motor, a screw and a screw slider, the upper end of the screw is connected to the output shaft of the servo motor, the screw slider is fitted on the outside of the screw, and the fixed seat is connected to the screw slider.

[0010] As a further improvement, a positioning block is connected to the frame, a guide slot is provided on the side wall of the positioning block, and the screw slider is slidably fitted in the guide slot.

[0011] Furthermore, the adjustment assembly includes a vertical plate and a horizontal plate in an L-shaped structure, the vertical plate is provided with a first waist-shaped hole extending vertically, the first waist-shaped hole is penetrated by a first screw for connecting the vertical plate to the fixing seat; the horizontal plate is connected to a fixing plate at one end away from the vertical plate, the fixing plate is provided with a second waist-shaped hole extending in a horizontal direction, the second waist-shaped hole is penetrated by a second screw for connecting the first detection element, and the horizontal plate is provided with an avoidance hole for the probe of the first detection element to pass through.

[0012] As a further improvement, the fixing seat is connected to a mounting bracket, and the mounting bracket is connected to a roller for positioning and abutting against the upper surface of the workpiece to be inspected.

[0013] As a further improvement, a plurality of drain grooves are provided on the upper end surface of the detection platform.

[0014] As a further improvement, the frame is provided with material baffles on both sides of the width direction of the loading conveyor belt and the unloading conveyor belt, and each of the material baffles includes a vertical baffle and a horizontal connecting plate in a right-angled shape, and a positioning channel for the workpiece channel is formed between the vertical baffles of the two oppositely arranged material baffles; the horizontal connecting plate of each of the material baffles is provided with a third waist-shaped hole extending along the width direction of the positioning channel, and a third screw for connecting each of the material baffles to the frame is passed through the third waist-shaped hole.

[0015] Further improved, the loading conveyor belt, unloading conveyor belt and detection platform are located in the same straight line direction, and arc-shaped inner grooves are provided at both ends of the detection platform, and the two inner grooves are respectively matched with the outlet end of the loading conveyor belt and the inlet end of the unloading conveyor belt.

[0016] Preferably, the first detection element and the second detection element are both capacitive micrometers.

[0017] Other improved features and advantages of the present invention will be described in the following detailed description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purposes and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of the thickness detection device of the present utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the medium thickness detection device from another angle (without the frame)

[0020] Figure 3 for Figure 2 The X in the figure is enlarged;

[0021] Figure 4 for Figure 2 Schematic diagram of the medium thickness detection device from another angle;

[0022] Figure 5 for Figure 4 The structure diagram at Y in the middle is enlarged;

[0023] Figure 6 for Figure 2 Main view of the medium thickness detection device;

[0024] Figure 7 for Figure 6 AA section view in the figure;

[0025] Figure 8This is a structural diagram of the detection device and the grinding machine in the present utility model in linkage use.

[0026] Description of reference numerals:

[0027] 1. Frame; 2. Loading conveyor belt; 3. Unloading conveyor belt; 4. Detection platform; 5. First detection element; 6. Second detection element; 7. Connecting hole; 8. Fixed seat; 9. Servo motor; 10. Screw; 11. Screw slider; 12. Positioning block; 13. Vertical plate; 14. Horizontal plate; 15. First waist-shaped hole; 16. Fixed plate; 17. Second waist-shaped hole; 18. Mounting frame; 19. Roller; 20. Drain trough; 21. Material stop plate; 22. Protective frame; 23. Protective door; 24. Operation panel; 25. Grinding disc; 26. Grinding disc adjustment mechanism; 27. Conveying assembly. DETAILED DESCRIPTION

[0028] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0029] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "fixed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0030] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] See also Figures 1 to 8As shown, the embodiment of the present application discloses a thickness detection device, including a frame 1, on which a loading conveyor belt 2, a unloading conveyor belt 3 and a detection platform 4 are provided. One end of the detection platform 4 is connected to the outlet end of the loading conveyor belt 2, and the other end is connected to the inlet end of the unloading conveyor belt 3, that is, the workpiece comes out of the grinding equipment and enters the loading conveyor belt 2 and is automatically transported to the detection platform 4 to realize the detection process, and then the workpiece enters the unloading conveyor belt 3 and is automatically transported to the next link; specifically, a first detection element 5 is connected to the frame 1 above the detection platform 4 and can be lifted and lowered, and a second detection element 6 is also connected to the frame 1 below the detection platform 4, and a connecting hole 7 is opened on the detection platform 4, and the probe of the second detection element 6 is slidably arranged in the connecting hole 7. When the ground workpieces slide one by one from the loading conveyor belt 2 across the detection platform 4, the probe of the first detection element 5 and the probe of the second detection element 6 respectively slide and abut against the upper and lower end surfaces of the workpiece, thereby realizing automatic detection of the thickness of the workpiece.

[0032] In some other embodiments, the workpiece can also enter the inspection platform 4 through other forms of transmission. For example, relying on a push rod structure, the workpiece is pushed directly from the discharge port of the previous workstation to the inspection platform 4. After the inspection is completed, the workpiece is pushed to the next workstation through another push rod structure, as long as the loading and unloading of the workpiece can be achieved; it can even be manually transferred from the discharge port of the previous workstation to the inspection platform 4.

[0033] In addition, in this embodiment, the first detection element 5 and the second detection element 6 are both existing contact displacement sensors, specifically capacitive micrometers.

[0034] In the above structure, during the translation of the workpiece from the detection platform 4, the probes of the first detection element 5 and the second detection element 6 are respectively in contact with the upper and lower surfaces of the workpiece, and the thickness of the workpiece is calculated through the test data of the two detection elements. This arrangement of the detection elements in the upper and lower directions can better ensure the accuracy of the detection results. The lower surface of the workpiece can be used as a reference plane, and the reference plane remains basically stable during the movement. In addition, a second detection element 6 is also provided on the lower surface of the workpiece, so as to avoid the detection results being affected by fluctuations in the reference plane.

[0035] Furthermore, in this embodiment, a vertically slidable fixed seat 8 and a driving component for driving the fixed seat 8 to slide up and down are connected to the frame 1, the first detection element 5 is connected to the fixed seat 8, and the fixed seat 8 is connected to an adjustment component for adjusting the position of the first detection element 5 in multiple dimensions. In this structure, the height adjustment of the first detection element 5 is achieved through the driving component, and the first detection element 5 can be adjusted along the length and width directions of the detection platform 4 through the adjustment component, so that the size of the workpiece can be detected more accurately, and the position of the detection element can be adjusted according to the specifications of the product.

[0036] Preferably, see the attached Figure 7 The driving assembly in the above structure includes a servo motor 9, a screw rod 10 and a screw slider 11. The servo motor 9 is vertically arranged on the top of the frame 1, and the screw rod 10 is also vertically arranged, and the upper end of the screw rod 10 is connected to the output shaft of the servo motor 9. The screw slider 11 is fitted on the outside of the screw rod 10, and the fixed seat 8 is connected to the screw slider 11. The servo motor 9 drives the screw rod 10 to rotate, thereby driving the screw slider 11 to rise and fall along the axial direction of the screw rod 10, thereby driving the fixed seat 8 to rise and fall vertically, and finally realizing the lifting and lowering adjustment of the first detection element 5. In addition, in order to ensure the smooth lifting of the fixed seat 8, a positioning block 12 is connected to the frame 1, and a guide groove is provided on the side wall of the positioning block 12. The screw slider 11 slides and fits in the guide groove; the preferred guide groove is a dovetail groove structure, and a guide groove matching the shape of the dovetail groove is provided on one side of the screw slider 11. The dovetail groove matching structure can ensure the vertical sliding stability while also serving as a horizontal limit.

[0037] More specifically, in this implementation, see the attached Figure 3 The adjustment assembly includes a vertical plate 13 and a horizontal plate 14 in an L-shaped structure, wherein the upper end of the vertical plate 13 is provided with a first waist-shaped hole 15 extending vertically, and the first waist-shaped hole 15 is penetrated by a first screw (not shown in the figure) for connecting the vertical plate 13 to the fixing seat 8; similarly, the end of the horizontal plate 14 away from the vertical plate 13 is connected to a vertically arranged fixing plate 16, and the fixing plate 16 is provided with a second waist-shaped hole 17 extending in the horizontal direction, and the second waist-shaped hole 17 is penetrated by a second screw (not shown in the figure) for connecting the first detection element 5, and the horizontal plate 14 is provided with an avoidance hole for the probe of the first detection element 5 to pass through. In this structure, the first waist-shaped hole is mainly used to fine-tune the vertical position of the vertical plate 13, and the second waist-shaped hole 17 is used to fine-tune the first detection element 5 along the direction of movement of the workpiece, thereby realizing multi-dimensional directional adjustment of the first detection element 5. In practical applications, the probes of the first detection element 5 and the second detection element 6 are preferably arranged symmetrically up and down.

[0038] See attached Figure 5, a mounting bracket 18 is connected to the fixed seat 8, and a roller 19 is connected to the mounting bracket 18 for positioning against the upper surface of the workpiece to be inspected. The workpieces move one by one from the loading conveyor belt 2 toward the unloading conveyor belt 3, and will pass through the inspection platform 4 in the middle. When passing through the inspection platform 4, the roller 19 is positioned and pressed on the upper surface of the workpiece, which better ensures the stability of the workpiece during the movement and further improves the inspection accuracy. In this structure, preferably, there are two rollers 19, and they are symmetrically arranged on both sides of the probe of the first detection element 5. In addition, in the above structure, a number of drain grooves 20 are provided on the upper end surface of the inspection platform 4 to achieve the drainage and drying effect of the workpiece. Preferably, the drain groove 20 is a V-shaped groove, and the drain groove 20 can be set in an inclined shape with one side higher and the other side lower, which is conducive to the timely discharge of accumulated water.

[0039] In this embodiment, see the attached Figure 2 , baffle plates 21 are provided on both sides of the loading conveyor belt 2 and the unloading conveyor belt 3 in the width direction of the frame 1, and each baffle plate 21 includes a vertical baffle plate and a horizontal connecting plate at right angles, and a positioning channel for the workpiece channel is formed between the vertical baffle plates of the two relatively arranged baffle plates 21; the horizontal connecting plate of each baffle plate 21 is provided with a third waist-shaped hole extending along the width direction of the positioning channel, and a third screw (not shown in the figure) is passed through the third waist-shaped hole for connecting each of the baffle plates 21 to the frame 1, and the position of the horizontal connecting plate can be customized through the third waist-shaped hole, thereby adjusting the width of the positioning channel to adapt to workpieces of non-universal specifications, with high versatility.

[0040] Specifically, the loading conveyor belt 2, the unloading conveyor belt 3 and the detection platform 4 are located in the same straight line direction, and arc-shaped inner grooves are provided at both ends of the detection platform 4, and the two inner grooves are respectively matched with the outlet end of the loading conveyor belt 2 and the inlet end of the unloading conveyor belt 3, to ensure that the two ends of the detection platform 4 are better connected with the loading conveyor belt 2 and the unloading conveyor belt 3, and the upper surface of the detection platform 4 is flush with the upper surface of the loading conveyor belt 2 and the unloading conveyor belt 3, thereby ensuring the stability of the workpiece during movement.

[0041] See attached Figure 1 A corresponding protective frame 22 is also provided on the frame 1, and a protective door 23 is provided on the front side. The door is closed during the inspection process and can be opened for inspection and maintenance when inspection is required or a fault occurs. In addition, a corresponding operation panel 24 can be provided on the outer wall of the protective frame 22. The inspection results of the workpiece can be displayed on the operation panel 24. If a large number of unqualified workpieces are found, the inspection can be manually stopped and the grinding equipment can be adjusted in a timely manner.

[0042] See attached Figure 8The detection device of this embodiment is applied to the discharge end of the grinding machine, that is, the workpiece at the discharge port of the grinding machine enters the loading conveyor belt 2 of the detection device through the corresponding transmission component 27, and enters the detection channel for detection. The two detection elements are respectively connected to the computer or PLC to realize automatic recording of the thickness size of the workpiece, and can also be compared with the qualified data pre-stored in the computer. When it is found that the workpiece size is continuously unqualified, the signal is promptly fed back to the grinding equipment, and the distance between the two grinding discs 25 is promptly adjusted through the grinding disc adjustment mechanism 26 to perform online correction and trimming of the grinding value of the workpiece.

[0043] In the description of this application, the description with reference to the terms "this embodiment", "some embodiments", etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are mutually inconsistent.

[0044] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A thickness detection device, comprising a frame (1), characterized in that: The frame (1) is provided with a loading conveyor belt (2), a unloading conveyor belt (3) and a detection platform (4), one end of the detection platform (4) is connected to the outlet end of the loading conveyor belt (2), and the other end is connected to the inlet end of the unloading conveyor belt (3); a first detection element (5) is connected to the frame (1) above the detection platform (4) in a liftable manner, and a second detection element (6) is also connected to the frame (1) below the detection platform (4), and a connecting hole (7) is provided on the detection platform (4), and a probe of the second detection element (6) is slidably arranged in the connecting hole (7). When the workpieces after grinding slide one by one from the loading conveyor belt (2) to the detection platform (4), the probe of the first detection element (5) and the probe of the second detection element (6) respectively slide and abut against the upper and lower end surfaces of the workpiece.

2. The thickness detection device according to claim 1, characterized in that: The frame (1) is connected to a fixing seat (8) that is slidable in a vertical direction and a driving assembly for driving the fixing seat (8) to slide up and down; the first detection element (5) is connected to the fixing seat (8); and the fixing seat (8) is connected to an adjusting assembly for adjusting the position of the first detection element (5) in multiple dimensions.

3. The thickness detection device according to claim 2, characterized in that: The driving assembly comprises a servo motor (9), a screw rod (10) and a screw rod slider (11), wherein the upper end of the screw rod (10) is connected to the output shaft of the servo motor (9), the screw rod slider (11) is fitted outside the screw rod (10), and the fixing seat (8) is connected to the screw rod slider (11).

4. The thickness detection device according to claim 3, characterized in that: A positioning block (12) is connected to the frame (1), a guide slot is provided on the side wall of the positioning block (12), and the screw slider (11) is slidably fitted in the guide slot.

5. The thickness detection device according to claim 2, characterized in that: The adjustment assembly includes a vertical plate (13) and a horizontal plate (14) in an L-shaped structure, wherein the vertical plate (13) is provided with a first waist-shaped hole (15) extending vertically, and a first screw for connecting the vertical plate (13) to the fixing seat (8) is passed through the first waist-shaped hole (15); the horizontal plate (14) is connected to a fixing plate (16) at one end away from the vertical plate (13), and the fixing plate (16) is provided with a second waist-shaped hole (17) extending in the horizontal direction, and a second screw for connecting the first detection element (5) is passed through the second waist-shaped hole (17), and the horizontal plate (14) is provided with an avoidance hole for allowing the probe of the first detection element (5) to pass through.

6. The thickness detection device according to any one of claims 2 to 5, characterized in that: The fixing seat (8) is connected to a mounting frame (18), and the mounting frame (18) is connected to a roller (19) for positioning and abutting against the upper surface of the workpiece to be detected.

7. The thickness detection device according to any one of claims 1 to 5, characterized in that: The upper end surface of the detection platform (4) is provided with a plurality of drain grooves (20).

8. The thickness detection device according to claim 1, characterized in that: The frame (1) is provided with baffle plates (21) on both sides of the width direction of the loading conveyor belt (2) and the unloading conveyor belt (3), and each of the baffle plates (21) includes a vertical baffle plate and a horizontal connecting plate in a right angle shape, and a positioning channel for a workpiece channel is formed between the vertical baffle plates of the two oppositely arranged baffle plates (21); a third waist-shaped hole extending along the width direction of the positioning channel is provided on the horizontal connecting plate of each of the baffle plates (21), and a third screw for connecting each of the baffle plates (21) to the frame (1) is passed through the third waist-shaped hole.

9. The thickness detection device according to claim 1 or 8, characterized in that: The loading conveyor belt (2), the unloading conveyor belt (3) and the detection platform (4) are located in the same straight line direction, and both ends of the detection platform (4) are provided with arc-shaped inner grooves, and the two inner grooves are respectively matched with the outlet end of the loading conveyor belt (2) and the inlet end of the unloading conveyor belt (3).

10. The thickness detection device according to claim 1, characterized in that: The first detection element (5) and the second detection element (6) are both capacitive micrometers.

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