A device for testing the hardness of bolt fasteners

Abstract

The present invention relates to a bolt fastener hardness detection device applied to the field of bolt processing technology, comprising a machine body, a conveyor belt, a bolt part, a lifting module, an image detection module, an end plate, a scratching knife, a back groove, a pigment stick and a leak hole. The scratching knife corresponds to the nut end of the bolt part vertically and crosswise. The present invention transports the bolt part through the bottom of the lifting module through the conveyor belt, and the bolt part transported on the production line passes through the bottom of the scratching knife. The scratching knife generates scratches on the surface of the bolt part that does not meet the hardness standard. A pigment stick is placed in the back groove of the scratching knife, and the pigment is evenly exuded from the leak hole, so that the pigment penetrates into the scratch during the scratch generation process, effectively improving the obviousness of the scratch, and can better distinguish different types of traces. Then, the image detection module is used to perform image analysis and detection on the scratch with pigment, effectively improving the image analysis effect of the image detection module, thereby effectively improving the detection accuracy of the bolt part.

Description

Technical Field

[0001] The present invention relates to a hardness detection device, in particular to a bolt fastener hardness detection device applied in the technical field of bolt processing. Background Art

[0002] Bolts are mechanical parts, cylindrical threaded fasteners equipped with nuts. They are a type of fastener consisting of a head and a screw. They need to be matched with nuts and are used to fasten two parts with through holes. In order to ensure the quality of the products during the production and processing of bolts, hardness testing of the bolts after production is required.

[0003] The specification of Chinese invention patent CN202021132571.8 discloses "A Bolt Hardness Testing Instrument". The tool head is selected by rotating the rotating disk, and then the tool head is made close to the outer surface of the upper end of the screw. The slider is then pushed left and right along the slide groove to observe whether marks can be left on the surface of the screw. In this way, the hardness of the screw can be judged.

[0004] Most of the existing detection methods are physical methods for detection. The bolt resists the pressure of a higher hardness detection tool to detect the surface condition of the bolt and judge whether the hardness of the bolt meets the standard. Generally, the higher the hardness of the bolt, the better its wear resistance. The tool used to detect hardness is harder than the bolt. The hardness difference between the bolts that meet the hardness standard and the detection tool is not large, and the marks produced by the detection tool on the bolt are slight. On the contrary, when the bolt hardness is not enough, the detection tool is more likely to produce marks on the bolt, but the appearance of the two marks is not obvious enough, which affects the ability to judge the hardness of the bolt and affects the accuracy of the bolt hardness detection. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the detection marks produced by the detection tool on the bolt surface are not clearly distinguishable, thereby affecting the ability to judge the hardness of the bolt and affecting the accuracy of the bolt hardness detection.

[0006] In order to solve the above problems, the present invention provides a bolt fastener hardness detection device, comprising a body, a conveyor belt is fixedly connected to the front of the body, bolts are placed on the surface of the conveyor belt, a lifting module and an image detection module are fixedly connected to the left and right ends of the body respectively, the camera end of the image detection module corresponds to the bolt, the bottom end of the lifting module is fixedly connected to an end plate, a cutter is hinged at the bottom of the end plate, the cutter is vertically crossed with the nut end of the bolt, the hardness of the cutter is greater than the hardness of the bolt, a back groove is provided at the top of the cutter, a pigment stick is placed inside the back groove, and a leak hole is provided at the bottom of the back groove;

[0007] A push and wipe module is fixedly connected to the middle of the machine body, and the push and wipe module is located between the lifting module and the image detection module. A rotating wheel is rotatably connected to the middle of the push and wipe module, and a pipe sleeve is inserted into the outside of the rotating wheel. A wiping pad is fixedly connected to the outer end of the pipe sleeve, and the wiping pad corresponds to the bolt member.

[0008] In the above-mentioned bolt fastener hardness detection device, the bolts conveyed on the production line are scratched by a scratching knife, scratches are generated on the surface of the bolts that do not meet the hardness standards, and paint penetrates into the scratches, effectively increasing the visibility of the scratches, facilitating image detection by the image detection module, thereby effectively improving the detection accuracy of the bolts.

[0009] As a further improvement of the present application, the scoring knife is arranged at an angle, and a pressure spring is fixedly connected between the bottom end of the scoring knife and the end plate, so that the pressure spring is utilized to increase the downward pressure of the scoring knife, thereby effectively improving the effect of producing scratches on the bolt member.

[0010] As a further improvement of the present application, a cleaning wiper is fixedly connected to the front end of the end plate, the cleaning wiper corresponds to the bolt member, and the cleaning wiper and the scratching knife are arranged on the same plane. The cleaning wiper is used to clean the bolt member to be scratched, effectively preventing dust from affecting the hardness detection of the bolt.

[0011] As a further improvement of the present application, a hammer head is fixedly connected to the top of the scratching knife, and the hammer head is in contact and correspondence with the root of the cleaning wiper. During the up and down swinging of the scratching knife, the hammer head cyclically strikes the cleaning wiper, causing the cleaning wiper to shake off dust.

[0012] As another improvement of the present application, a catheter is fixedly inserted at the top of the paint stick, a paint can is placed inside the lifting module, the top of the catheter is fixedly connected to the paint can, the paint stick is made of sponge material, and the paint in the paint can is sent to the paint stick through the catheter, so that the paint soaks the paint stick, which facilitates the uniform distribution of the paint.

[0013] As another improved supplement of the present application, a can cover is fixedly connected to the top of the paint can, and the top of the can cover extends out of the lifting module, so that paint can be easily added to the paint can through the can cover.

[0014] As another improvement of the present application, a spring sheet is fixedly connected between the pipe sleeve and the rotating wheel. The spring sheet is arranged in a C shape and is made of spring steel material. The wiping pad is made of sponge material. The spring sheet is utilized to provide pressure for the wiping pad, thereby effectively improving the wiping effect of the wiping pad on the bolt member.

[0015] As another improvement supplement of the present application, a recovery groove is inserted in the middle of the rotating wheel, and an extrusion plate is fixedly connected to the top of the recovery groove. The lower surface of the extrusion plate is slidably connected to the wiping pad block. When the rotating wheel rotates toward the wiping pad block to the extrusion plate position, the wiping pad block is in close contact with the extrusion plate, and the paint absorbed by the wiping pad block is squeezed out, which facilitates the wiping pad block to wipe the paint again and drips it into the recovery groove through the tube sleeve.

[0016] As another improvement supplement of the present application, a reflux pump is fixedly connected to the bottom of the recovery tank, and a reflux pipe is fixedly connected between the output end of the reflux pump and the protruding end of the tank cover. The reflux pump is used to transport the pigment in the recovery tank back to the pigment tank through the reflux pipe, thereby effectively improving the recycling effect of the pigment.

[0017] In summary, the present invention uses a conveyor belt to transport bolt parts through the bottom of the lifting module, and the bolt parts transported on the production line pass through the bottom of the scratcher. The scratcher generates scratches on the surface of the bolt parts that do not meet the hardness standard. A pigment stick is placed in the back groove of the scratcher, and the pigment is evenly seeped out from the leak hole, so that the pigment penetrates into the scratches during the scratch generation process, effectively improving the obviousness of the scratches and being able to better distinguish different types of traces. Then, the image detection module is used to perform image analysis and detection on the scratches stained with pigment, effectively improving the image analysis effect of the image detection module, thereby effectively improving the detection accuracy of the bolt parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional structural diagram of an implementation method of the present application;

[0019] Figure 2 This is a three-dimensional structural diagram of the machine body of the embodiment of the present application;

[0020] Figure 3 This is a three-dimensional structural diagram of the end plate of the embodiment of the present application;

[0021] Figure 4 A three-dimensional structural diagram of a cutter and a bolt member according to an embodiment of the present application;

[0022] Figure 5 A three-dimensional structural diagram of a cutting knife according to an embodiment of the present application;

[0023] Figure 6 A cross-sectional view of a lifting module according to an embodiment of the present application;

[0024] Figure 7 This is a three-dimensional structural diagram of a paint can and a can cover according to an embodiment of the present application;

[0025] Figure 8 This is a three-dimensional structural diagram of the push-wipe module according to an embodiment of the present application;

[0026] Fig. 9This is a rear perspective structural diagram of the lifting module and the pushing and wiping module according to the embodiment of the present application;

[0027] Fig.10 This is a three-dimensional structural diagram of a rotating wheel according to an embodiment of the present application;

[0028] Fig.11 This is a diagram demonstrating the rotating motion of the wheel according to an embodiment of the present application.

[0029] Description of the numbers in the figure:

[0030] 1. Machine body; 101. Conveyor belt; 102. Bolts; 2. Lifting module; 201. End plate; 202. Scratcher; 203. Back groove; 204. Paint stick; 205. Leak hole; 206. Pressure spring; 207. Dust-cleaning wiper; 208. Hammer; 3. Image detection module; 4. Conduit; 401. Paint can; 402. Can cover; 5. Push-wipe module; 501. Rotating wheel; 502. Pipe sleeve; 503. Wiping pad; 504. Shrapnel; 505. Recovery tank; 506. Extrusion plate; 507. Reflux pump; 508. Reflux pipe. DETAILED DESCRIPTION

[0031] The implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0032] Implementation method:

[0033] Figure 1-7 As shown, it includes a machine body 1, a conveyor belt 101 is fixedly connected to the front of the machine body 1, a bolt member 102 is placed on the surface of the conveyor belt 101, a lifting module 2 and an image detection module 3 are fixedly connected to the left and right ends of the machine body 1 respectively, a camera end of the image detection module 3 corresponds to the bolt member 102, an end plate 201 is fixedly connected to the bottom end of the lifting module 2, a scratching knife 202 is hinged at the bottom of the end plate 201, the scratching knife 202 corresponds to the nut end of the bolt member 102 vertically and crosswise, the hardness of the scratching knife 202 is greater than the hardness of the bolt member 102, when the bolt member 102 passes through the bottom of the scratching knife 202, the scratching knife 202 scratches the bolt member 102 to produce marks, and the scratch marks produced on the surface of the bolt member 102 that does not meet the hardness standard are more The two marks are different in depth. A back groove 203 is provided on the top of the scratching knife 202. A pigment stick 204 is placed inside the back groove 203. A leak hole 205 is provided at the bottom of the back groove 203. A conduit 4 is fixedly inserted on the top of the pigment stick 204. A pigment tank 401 is placed inside the lifting module 2. The top of the conduit 4 is fixedly connected to the pigment tank 401. The pigment stick 204 is made of sponge material. The pigment in the pigment tank 401 is sent to the pigment stick 204 through the conduit 4, so that the pigment soaks the pigment stick 204, which is convenient for uniform distribution of the pigment. A tank cover 402 is fixedly connected to the top of the pigment tank 401. The top of the tank cover 402 extends out of the lifting module 2, which is convenient for replenishing pigment into the pigment tank 401 through the tank cover 402.

[0034] When performing a hardness test on a bolt, the bolt member 102 is placed on the conveyor belt 101 for transmission. When the bolt member 102 passes the bottom of the lifting module 2, the bolt member 102 touches the bottom of the scratching knife 202. The scratching knife 202 produces a deeper scratch on the surface of the bolt member 102 that does not meet the hardness standard. At the same time, the pigment stick 204 placed in the back groove 203 oozes pigment, and the pigment oozes out evenly from the leak hole 205, so that the pigment penetrates into the scratch during the scratching process. After the bolt member 102 that meets the hardness standard touches the scratching knife 202, the scratch produced on the surface of the bolt member 102 is very fine, and the depth of the scratch does not reach the pigment penetration space. Therefore, the scratch on the bolt member 102 that does not meet the hardness standard is infected by the pigment, thereby increasing the obviousness of the scratch and being able to better distinguish different types of traces. Subsequently, the image detection module 3 is used to perform image analysis and detection on the scratch with pigment, effectively improving the image analysis effect of the image detection module 3, thereby effectively improving the detection accuracy of the bolt member 102.

[0035] Figure 3-6 As shown, the scratching knife 202 is arranged at an angle, and a pressure spring 206 is fixedly connected between the bottom end of the scratching knife 202 and the end plate 201, and the pressure spring 206 is used to increase the downward pressure of the scratching knife 202, so as to effectively improve the scratching effect on the bolt member 102, and the front end of the end plate 201 is fixedly connected with a dust cleaning wiper 207, and the dust cleaning wiper 207 corresponds to the bolt member 102, and the dust cleaning wiper 207 and the scratching knife 202 are arranged in the same plane, and the dust cleaning wiper 207 is used to clean the bolt member 102 to be scratched, so as to effectively prevent dust from affecting the hardness detection of the bolt, and the top end of the scratching knife 202 is fixedly connected with a hammer head 208, and the hammer head 208 contacts and corresponds with the root of the dust cleaning wiper 207, and in the process of the scratching knife 202 swinging up and down, the hammer head 208 cyclically knocks the dust cleaning wiper 207, so that the dust cleaning wiper 207 shakes off the dust;

[0036] The inclined scoring knife 202 is beveled on the side of the bolt member 102. When the bolt member 102 passes the bottom of the scoring knife 202, the bolt member 102 lifts the scoring knife 202 and applies pressure to the pressure spring 206, thereby effectively improving the contact effect between the scoring knife 202 and the bolt member 102, and then effectively improving the generation of scratches. Subsequently, the scoring knife 202 recovers under the elastic force of the pressure spring 206, realizing the cyclic swing of the scoring knife 202, so that the hammer head 208 at the top of the scoring knife 202 knocks the cleaning wiper plate 207, thereby shaking off the dust on the cleaning wiper plate 207.

[0037] Figure 8-10As shown, a push-wiping module 5 is fixedly connected to the middle of the body 1, and the push-wiping module 5 is located between the lifting module 2 and the image detection module 3. A rotating wheel 501 is rotatably connected to the middle of the push-wiping module 5. A sleeve 502 is plugged into the outside of the rotating wheel 501. A wiping pad 503 is fixedly connected to the outer end of the sleeve 502. The wiping pad 503 corresponds to the bolt member 102. The wiping pad 503 on the push-wiping module 5 is used to wipe the bolt member 102, and the paint other than the scratch is wiped, thereby effectively preventing the excess paint from affecting the judgment of the image detection module 3. A spring piece 504 is fixedly connected between the sleeve 502 and the rotating wheel 501. The spring piece 504 is arranged in a C shape, and the spring piece 504 is made of spring steel material. The wiping pad 503 is made of sponge material. The spring piece 504 is used to provide pressure for the wiping pad 503, so as to effectively improve the wiping effect of the wiping pad 503 on the bolt member 102.

[0038] After the bolt 102 is scratched by the scratching knife 202, the bolt 102 is transmitted to the bottom of the push-wiping module 5, and the rotating wheel 501 drives the wiping pad 503 on the sleeve 502 to wipe the bolt 102. The wiping pad 503 on the push-wiping module 5 wipes the bolt 102. Since the wiping direction is perpendicular to the scratching direction, the paint in the scratch does not contact the wiping pad 503, so the paint in the scratch is retained, thereby effectively avoiding the excess paint from affecting the judgment of the image detection module 3, thereby effectively improving the detection accuracy of the bolt hardness.

[0039] Figure 7-11 As shown, a recovery groove 505 is inserted in the middle of the rotating wheel 501, and a squeezing plate 506 is fixedly connected to the top of the recovery groove 505. The lower surface of the squeezing plate 506 is slidably connected to the wiping pad 503. When the rotating wheel 501 rotates toward the wiping pad 503 to the squeezing plate 506 position, the wiping pad 503 is in close contact with the squeezing plate 506, and the pigment absorbed by the wiping pad 503 is squeezed out, which is convenient for the wiping pad 503 to wipe the pigment again, and the pigment drips into the recovery groove 505 through the pipe sleeve 502. A reflux pump 507 is fixedly connected to the bottom of the recovery groove 505, and a reflux pipe 508 is fixedly connected between the output end of the reflux pump 507 and the protruding end of the tank cover 402. The reflux pump 507 is used to transport the pigment in the recovery groove 505 back to the pigment tank 401 through the reflux pipe 508, thereby effectively improving the recycling effect of the pigment.

[0040] When the rotating wheel 501 drives the wiping pad 503 on the tube sleeve 502 to rotate to the bottom of the extrusion plate 506, the wiping pad 503 and the extrusion plate 506 are strongly squeezed, and the squeezing force is greater than that of the wiping pad 503 and the bolt member 102, so that the paint absorbed by the wiping pad 503 is squeezed out, which is convenient for the wiping pad 503 to wipe the paint again, and the squeezed paint drips into the recovery tank 505 through the tube sleeve 502, and the subsequent reflux pump 507 transports the paint in the recovery tank 505 back to the paint tank 401 through the reflux pipe 508, effectively improving the reuse effect of the paint.

[0041] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A bolt fastener hardness detection device, Features: The invention comprises a machine body (1), wherein a conveyor belt (101) is fixedly connected to the front of the machine body (1), a bolt member (102) is placed on the surface of the conveyor belt (101), a lifting module (2) and an image detection module (3) are fixedly connected to the left and right ends of the machine body (1), respectively, a camera end of the image detection module (3) corresponds to the bolt member (102), an end plate (201) is fixedly connected to the bottom end of the lifting module (2), a cutter (202) is hingedly connected to the bottom of the end plate (201), the cutter (202) corresponds to a nut end of the bolt member (102) in a vertically cross relationship, the hardness of the cutter (202) is greater than the hardness of the bolt member (102), a back groove (203) is provided at the top of the cutter (202), a pigment stick (204) is placed inside the back groove (203), and a leak hole (205) is provided at the bottom end of the back groove (203); A push and wipe module (5) is fixedly connected to the middle of the machine body (1), the push and wipe module (5) is located between the lifting module (2) and the image detection module (3), a rotating wheel (501) is rotatably connected to the middle of the push and wipe module (5), a pipe sleeve (502) is plugged into the outside of the rotating wheel (501), a wiping pad (503) is fixedly connected to the outer end of the pipe sleeve (502), and the wiping pad (503) corresponds to the bolt member (102).

2. A bolt fastener hardness detection device according to claim 1, Features: The scratching knife (202) is arranged in an inclined manner, and a pressure spring (206) is fixedly connected between the bottom end of the scratching knife (202) and the end plate (201).

3. A bolt fastener hardness detection device according to claim 1, Features: A dust cleaning wiper (207) is fixedly connected to the front end of the end plate (201); the dust cleaning wiper (207) corresponds to the bolt member (102), and the dust cleaning wiper (207) and the scratching knife (202) are arranged on the same plane.

4. A bolt fastener hardness detection device according to claim 3, Features: A hammer head (208) is fixedly connected to the top end of the scratching knife (202), and the hammer head (208) contacts and corresponds to the root of the dust cleaning wiper (207).

5. A bolt fastener hardness detection device according to claim 1, Features: A conduit (4) is fixedly inserted into the top of the paint stick (204), a paint tank (401) is placed inside the lifting module (2), the top of the conduit (4) is fixedly connected to the paint tank (401), and the paint stick (204) is made of sponge material.

6. A bolt fastener hardness detection device according to claim 5, Features: The top end of the paint tank (401) is fixedly connected to a tank cover (402), and the top end of the tank cover (402) extends out of the lifting module (2).

7. A bolt fastener hardness detection device according to claim 1, Features: A spring sheet (504) is fixedly connected between the pipe sleeve (502) and the rotating wheel (501); the spring sheet (504) is arranged in a C shape and is made of a spring steel material; and the wiping pad (503) is made of a sponge material.

8. A bolt fastener hardness detection device according to claim 1, Features: A recovery groove (505) is inserted in the middle of the rotating wheel (501), a pressing plate (506) is fixedly connected to the top of the recovery groove (505), and a lower surface of the pressing plate (506) is slidably connected to the wiping pad (503).

9. A bolt fastener hardness detection device according to claim 8, Features: A reflux pump (507) is fixedly connected to the bottom of the recovery tank (505), and a reflux pipe (508) is fixedly connected between the output end of the reflux pump (507) and the protruding end of the tank cover (402).

Images