Diameter detection device for bolt production

Abstract

The utility model belongs to the technical field of bolt detection, and particularly relates to a diameter detection device for bolt production. Comprising a bottom plate; the limiting seat is arranged at the top of the bottom plate; the plurality of clamping grooves are uniformly formed in the limiting seat at intervals and are used for placing bolts to be tested; the detection mechanism is used for detecting the diameter of the to-be-detected bolt; the pushing mechanism is arranged on the bottom plate and is used for driving the detection mechanism to detect the to-be-detected bolt; the pushing mechanism comprises a rotating shaft; the power part provides power to drive the rotating shaft to rotate; the first connecting rod is arranged on the rotating shaft; the connecting shaft is arranged on the first connecting rod; the second connecting rod is rotationally arranged on the connecting shaft; the supporting shaft is arranged at the lower end of the second connecting rod; the connecting plates are arranged at front and rear ends of the supporting shaft; the fixing block is arranged between the bottoms of the two connecting plates; the push plate is arranged at the bottom of the fixing block, and the detection mechanism is located on the push plate. The utility model provides a diameter detection device for bolt production, which can automatically detect the diameter of a bolt.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolt detection, and in particular relates to a diameter detection device for bolt production. Background Art

[0002] The accuracy of bolt diameter is critical to the performance and installation of bolts. If the diameter does not meet the specifications, it may cause the bolt to break or loosen during use, causing safety hazards. In some precision assemblies, such as mechanical equipment or automobile manufacturing, the diameter of the bolt must match the size of other parts to ensure the accuracy and stability of the assembly. Qualified bolt diameter can ensure the effectiveness of fasteners and unnecessary waste. If the bolt diameter is too large, it may cause excessive tightening force, making the bolt difficult to remove. On the contrary, if the diameter is too small, it may not provide sufficient tightening force. Therefore, testing the bolt diameter can ensure product quality, avoid safety hazards, and ensure the accuracy of assembly.

[0003] However, the current detection of bolt diameter is performed manually, which is prone to errors, affecting the accuracy of the detection and resulting in failure to ensure the diameter quality requirements of the produced bolts. Utility Model Content

[0004] The utility model aims to solve the above-mentioned technical problems and to provide a diameter detection device for bolt production which can automatically detect the diameter of bolts to ensure the accuracy of detection.

[0005] In view of this, the utility model provides a diameter detection device for bolt production, comprising:

[0006] Base plate;

[0007] A limit seat is arranged on the top of the bottom plate;

[0008] There are multiple positioning slots, which are evenly spaced and arranged on the limiting seat for placing the bolts to be tested;

[0009] A detection mechanism, arranged on the bottom plate, for detecting the diameter of the bolt to be tested;

[0010] A driving mechanism is arranged on the bottom plate and is used to drive the detection mechanism to detect the bolts to be detected;

[0011] The driving force includes:

[0012] A support plate, arranged on the left side of the top of the base plate;

[0013] Brackets are arranged at the front and rear sides of the bottom of the support plate;

[0014] A rotating shaft is rotatably arranged between the two brackets;

[0015] The power unit is arranged on the support plate, and provides power to drive the rotating shaft to rotate;

[0016] A first connecting rod is disposed on the rotating shaft;

[0017] A connecting shaft is arranged on the first connecting rod, and the connecting shaft is far away from the rotating shaft;

[0018] A second connecting rod is rotatably disposed on the connecting shaft;

[0019] A support shaft, disposed at the lower end of the second connecting rod;

[0020] Connecting plates, arranged at the front and rear ends of the supporting shaft;

[0021] A fixing block is arranged between the bottoms of the two connecting plates;

[0022] The push plate is arranged at the bottom of the fixed block, and the detection mechanism is located on the push plate.

[0023] In the above technical solution, further, the power unit includes:

[0024] A gear, disposed on the rotating shaft;

[0025] A cylinder is arranged on the supporting plate;

[0026] The rack is arranged on the cylinder piston rod, and the rack is meshed with the gear.

[0027] In any of the above technical solutions, further, the fixed block and the push plate are connected by a fixing mechanism, and the fixing mechanism includes:

[0028] The mounting plate is arranged on the left and right sides of the fixed block, and the mounting plate is in contact with the push plate;

[0029] Positioning holes are provided on the mounting plate;

[0030] Tighten the screws, penetrate the positioning holes, and connect them with the push plate by thread.

[0031] In any of the above technical solutions, further, a guide mechanism for stably moving the push plate is provided on the bottom plate, and the guide mechanism includes:

[0032] Support seats are arranged on the left and right sides of the top of the bottom plate;

[0033] A guide rod is arranged on the support seat;

[0034] Slide grooves are provided on the left and right sides of the push plate to cooperate with the guide rod in a sliding manner, and the guide rod is slidably connected to the slide grooves.

[0035] In any of the above technical solutions, further, the detection mechanism includes:

[0036] A fixed plate, arranged at the bottom of the push plate;

[0037] The ruler frame is arranged at the rear side of the fixed plate, and the number is the same as the card slots, and they correspond one to one;

[0038] Anvil, arranged at the front side of the ruler frame;

[0039] A fixed sleeve is arranged at the rear side of the ruler frame;

[0040] A differential cylinder, arranged at the rear side of the fixed sleeve;

[0041] A micrometer screw is movably arranged between the fixed sleeve and the differential cylinder, and the micrometer screw extends forward to pass through the fixed sleeve, and the micrometer screw is parallel to the anvil;

[0042] The tail knob is rotatably set on the rear side of the differential barrel;

[0043] The display unit is arranged at the bottom of the differential cylinder and is used to display the measured value.

[0044] In any of the above technical solutions, further, a clamping mechanism is included, and the clamping mechanism includes:

[0045] A connecting frame is arranged on the left and right sides of the fixing plate;

[0046] The clamp is arranged between the two connecting frames and is located above the limiting seat.

[0047] The beneficial effects of the utility model are:

[0048] 1. The power unit provides power to make the shaft start to rotate, and the first connecting rod and the second connecting rod rotate and push the detection mechanism to move downward. When the detection mechanism is moved to a suitable position, the diameter of the bolt to be tested can be detected to ensure that the product quality meets the standard requirements and avoid errors in manual detection of bolt diameter;

[0049] 2. The push plate is guided to move by the guide rod to ensure the stability and accuracy of its motion trajectory, improve the accuracy of bolt detection, and ensure the accuracy of bolt detection by the detection mechanism;

[0050] 3. Start the detection mechanism to rotate the micrometer screw, so that the differential screw contacts the other end of the bolt to be tested. The relative displacement between the differential screw and the differential cylinder will be converted into a linear measurement value, which the user can directly read. In this way, the bolt to be tested can be automatically tested and the diameter of the bolt to be tested can be accurately measured for quality control and necessary adjustments.

[0051] 4. The fixing plate drives the connecting frame to move downward, and the connecting frame drives the clamp to move downward. The clamp can clamp and fix the bolt to be tested to ensure that it will not move during the detection process, which is convenient for testing the bolt to be tested and improves the stability and accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a plan view of the utility model;

[0053] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0054] Figure 3 It is a three-dimensional structural schematic diagram of the detection mechanism of the utility model;

[0055] Figure 4 It is a partial three-dimensional structural schematic diagram of the utility model;

[0056] Figure 5 It is a three-dimensional structural schematic diagram of the clamping mechanism of the utility model;

[0057] The accompanying drawings are marked as follows: 1. base plate; 2. limit seat; 3. positioning groove; 4. pushing mechanism; 41. support plate; 42. bracket; 43. rotating shaft; 44. power unit; 441. gear; 442. cylinder; 443. rack; 45. first connecting rod; 46. connecting shaft; 47. second connecting rod; 48. supporting shaft; 49. connecting plate; 410. fixing block; 411. pushing plate; 5. fixing mechanism; 51. mounting plate; 52. positioning hole; 53. fastening screw; 6. guiding mechanism; 61. support seat; 62. guide rod; 63. slide groove; 7. detection mechanism; 71. fixing plate; 72. ruler frame; 73. measuring anvil; 74. fixing sleeve; 75. differential cylinder; 76. micrometer screw; 78. tail knob; 79. display unit; 8. clamping mechanism; 81. connecting frame; 82. fixture. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0059] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0060] Embodiment 1:

[0061] like Figure 1-Figure 5 As shown, this embodiment provides a diameter detection device for bolt production, which is characterized by comprising:

[0062] Bottom plate 1;

[0063] The limiting seat 2 is arranged on the top of the bottom plate 1;

[0064] There are multiple positioning slots 3, which are evenly spaced and arranged on the limiting seat 2 for placing the bolts to be tested;

[0065] A detection mechanism 7, arranged on the bottom plate 1, for detecting the diameter of the bolt to be tested;

[0066] The driving mechanism 4 is arranged on the bottom plate 1 and is used to drive the detection mechanism 7 to detect the bolt to be detected;

[0067] The driving mechanism 4 comprises:

[0068] A support plate 41 is arranged on the top left side of the bottom plate 1;

[0069] The bracket 42 is arranged at the front and rear sides of the bottom of the support plate 41;

[0070] A rotating shaft 43 is rotatably disposed between the two brackets 42;

[0071] The power unit 44 is disposed on the support plate 41, and the power unit 44 provides power to drive the rotating shaft 43 to rotate;

[0072] A first connecting rod 45 is disposed on the rotating shaft 43;

[0073] A connecting shaft 46 is disposed on the first connecting rod 45, and the connecting shaft 46 is away from the rotating shaft 43;

[0074] A second connecting rod 47 is rotatably disposed on the connecting shaft 46;

[0075] A support shaft 48 is provided at the lower end of the second connecting rod 47;

[0076] The connecting plates 49 are arranged at the front and rear ends of the supporting shaft 48;

[0077] A fixing block 410 is disposed between the bottoms 42 of the two connecting plates 49;

[0078] The push plate 411 is disposed at the bottom of the fixed block 410 , and the detection mechanism 7 is located on the push plate 411 .

[0079] In the present technical solution, when it is necessary to measure the diameter of a bolt, first, the user places the bolt to be measured in the positioning slot 3. There are multiple positioning slots 3, so that the present device can measure multiple bolts at the same time, thereby improving work efficiency. After the bolt to be measured is placed, the power unit 44 is started, and the power unit 44 provides power to make the rotating shaft 43 start to rotate. The rotating shaft 43 drives the first connecting rod 45 to rotate, and the first connecting rod 45 rotates from a vertical state to a vertical state, and drives the connecting shaft 46 to move. The connecting shaft 46 drives the second connecting rod 47 to move. The second connecting rod 47 rotates during the movement, and the second connecting rod 47 pushes the supporting shaft 48. The supporting shaft 48 drives the connecting plate 49 to move downward, and the connecting plate 49 drives the fixed The fixed block 410 moves downward, and the fixed block 410 drives the push plate 411 to move downward, and the push plate 411 pushes the detection mechanism 7 to move downward. After the detection mechanism 7 moves to a suitable position, the power unit 44 is turned off. At this time, the detection mechanism 7 can perform diameter detection on the bolt to be tested. After the detection is completed, it can be determined whether the diameter of the bolt meets the requirements based on the detection result. If the diameter does not meet the specifications, the bolt may need to be further processed or classified. In this way, the bolt diameter detection device combines mechanical transmission and precise detection mechanism 7, which can realize accurate detection and measurement of the bolt diameter, ensure that the product quality meets the standard requirements, and avoid manual detection of bolt diameters that is prone to errors.

[0080] Embodiment 2:

[0081] This embodiment provides a diameter detection device for bolt production, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0082] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the power unit 44 is optimized to include:

[0083] A gear 441 is disposed on the rotating shaft 43;

[0084] The cylinder 442 is disposed on the support plate 41;

[0085] The rack 443 is disposed on the piston rod of the cylinder 442 , and the rack 443 is meshed with the gear 441 .

[0086] In the present technical solution, when it is necessary to drive the detection mechanism 7 to detect the bolt to be measured, the cylinder 442 is started, the piston rod of the cylinder 442 is extended, driving the rack 443 to move to the right, and the rack 443 moves to engage with the gear 441, so that the gear 441 rotates, and the gear 441 drives the rotating shaft 43 to rotate, so that the first connecting rod 45 and the second connecting rod 47 rotate, thereby pushing the detection mechanism 7 to move downward to detect the diameter of the bolt to be measured. When the detection mechanism 7 moves to the appropriate position, the cylinder 442 is closed to ensure that the detection mechanism 7 remains in the correct position, so that the detection mechanism 7 can be driven to detect the diameter of the bolt to be measured and the stability of the detection can be improved.

[0087] Embodiment 3:

[0088] This embodiment provides a diameter detection device for bolt production, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0089] like Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, the fixing block 410 and the push plate 411 are optimally connected via a fixing mechanism 5, and the fixing mechanism 5 includes:

[0090] The mounting plate 51 is disposed on the left and right sides of the fixing block 410, and the mounting plate 51 is in contact with the push plate 411;

[0091] A positioning hole 52 is formed on the mounting plate 51;

[0092] The fastening screw 53 penetrates the positioning hole 52 and is threadedly connected to the push plate 411 .

[0093] In the present technical solution, the fixed block 410 is fixedly connected to the push plate 411 through the mounting plate 51, the positioning hole 52 and the fastening screw 53, thereby improving the stability of the measurement. When the detection mechanism 7 needs to be disassembled, the fastening screw 53 can be unscrewed to disconnect the fixed block 410 and the push plate 411. At this time, the detection mechanism 7 can be removed, which is convenient for maintenance and replacement of the detection mechanism 7. When the detection mechanism 7 needs to be installed, the push plate 411 is placed at the bottom of the fixed block 410, and then the fastening screw 53 is passed through the positioning hole 52 and threadedly connected to the push plate 411, so that the fixed block 410 is fixedly connected to the push plate 411. This makes it easy to disassemble and install the detection mechanism 7, thereby facilitating the maintenance and replacement of the detection mechanism 7.

[0094] Embodiment 4:

[0095] This embodiment provides a diameter detection device for bolt production, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0096] like Figure 1-Figure 5 As shown, in this embodiment, the bottom plate 1 is optimized to be provided with a guide mechanism 6 for stably moving the push plate 411, and the guide mechanism 6 includes:

[0097] The support base 61 is arranged on the left and right sides of the top of the bottom plate 1;

[0098] A guide rod 62 is disposed on the support seat 61;

[0099] Slide groove 63: Slide grooves 63 slidably matched with the guide rod 62 are opened on the left and right sides of the push plate 411, and the guide rod 62 is slidably connected to the slide groove 63.

[0100] In the present technical solution, the push plate 411 is guided to move by the guide rod 62 to ensure the stability and accuracy of its motion trajectory and improve the accuracy of bolt detection. During operation, the fixed block 410 drives the push plate 411 to move, and the slide groove 63 on the push plate 411 enables the push plate 411 to move along the guide rod 62, making the movement of the push plate 411 more stable, thereby ensuring the accuracy of the bolt detection by the detection mechanism 7.

[0101] Embodiment 5:

[0102] This embodiment provides a diameter detection device for bolt production, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0103] like Figure 1-Figure 5 As shown, in this embodiment, the detection mechanism 7 is optimized to include:

[0104] A fixing plate 71 is disposed at the bottom of the push plate 411;

[0105] The ruler frame 72 is arranged at the rear side of the fixing plate 71, and has the same number as the clamping slots 3 and corresponds one to one;

[0106] The measuring anvil 73 is arranged at the front side of the ruler frame 72;

[0107] A fixed sleeve 74 is disposed at the rear side of the ruler frame 72;

[0108] Differential cylinder 75, arranged at the rear side of fixed sleeve 74;

[0109] A micrometer screw 76 is movably disposed between the fixed sleeve 74 and the differential cylinder 75, and the micrometer screw 76 extends forward to pass through the fixed sleeve 74, and the micrometer screw 76 is parallel to the anvil 73;

[0110] The tail knob 78 is rotatably arranged at the rear side of the differential cylinder 75;

[0111] The display unit 79 is disposed at the bottom of the differential cylinder 75 and is used to display the measured values.

[0112] In the present technical solution, the fixing plate 71 is located at the bottom of the push plate 411, providing a stable support platform, the ruler frame 72 is arranged at the rear side of the fixing plate 71, and the number of the ruler frame 72 is consistent with the number of the positioning slots 3, and the positioning slots 3 are used to fix the bolts to be measured and ensure the accuracy of the measurement, the anvil 73 is located at the front side of the ruler frame 72, and is a flat measuring surface for contacting the surface of the bolt to be measured, the fixing sleeve 74 is arranged at the rear side of the ruler frame 72, and provides support and positioning functions, and the differential cylinder 75 is located at the rear side of the fixing sleeve 74, and is used for measurement and display. The micrometer screw 76 is the main measuring component, which is movably arranged between the fixed sleeve 74 and the differential cylinder 75. The micrometer screw 76 extends forward through the fixed sleeve 74 and is parallel to the anvil 73. When the micrometer screw 76 rotates, the relative displacement between it and the differential cylinder 75 will be converted into a linear measurement value. The tail knob 78 is located at the rear side of the differential cylinder 75, which is used to rotate the differential cylinder 75 to adjust the zero point and perform measurements. The display unit 79 is arranged at the bottom of the differential cylinder 75 to display the measured value. This display unit 79 can be a dial, a digital display screen or other forms for conveniently reading the measurement results. Through the rotation of the differential screw and the movement of the differential cylinder 75, the anvil 73 is in contact with the two ends of the differential screw and the bolt, so as to detect the diameter of the bolt to be measured and achieve high-precision length measurement. Through the detection mechanism 7, the device can accurately measure the diameter of the bolt to be measured, and display the result on the display unit 79 for quality control and necessary adjustments.

[0113] Embodiment 6:

[0114] This embodiment provides a diameter detection device for bolt production, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0115] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the optimization further includes a clamping mechanism 8, and the clamping mechanism 8 includes:

[0116] The connecting frame 81 is arranged on the left and right sides of the fixing plate 71;

[0117] The clamp 82 is disposed between the two connecting frames 81 , and the clamp 82 is located above the limiting seat 2 .

[0118] In the present technical solution, the bolt to be tested is clamped and fixed by the clamp 82 so that the bolt to be tested will not be displaced during the processing, thereby improving the accuracy of bolt detection.

[0119] When it is necessary to inspect the bolt, first place the bolt to be tested in the positioning slot 3, then start the cylinder 442, the piston rod of the cylinder 442 extends, and drives the rack 443 to move to the right, the rack 443 moves and meshes with the gear 441, so that the gear 441 rotates, the gear 441 drives the rotating shaft 43 to rotate, the rotating shaft 43 drives the first connecting rod 45 to rotate, the first connecting rod 45 rotates from a vertical state to a vertical state, and drives the connecting shaft 46 to move, the connecting shaft 46 drives the second connecting rod 47 to move, the second connecting rod 47 rotates during the movement, the second connecting rod 47 pushes the supporting shaft 48, the supporting shaft 48 drives the connecting plate 49 to move downward, the connecting plate 49 drives the fixing block 410 to move downward, the fixing block 410 drives the push plate 411 to move downward The push plate 411 drives the fixing plate 71 to move downward, and the fixing plate 71 drives the detection mechanism 7 and the clamping mechanism 8 to move downward, so that the detection mechanism 7 and the clamping mechanism 8 are close to the bolt to be measured, and the clamping mechanism 8 fixes and clamps the bolt to be measured, so that the bolt to be measured is fixed. At the same time, after the detection mechanism 7 moves to a suitable position, the anvil 73 contacts one end of the bolt to be measured. At this time, the cylinder 442 is closed, and then the tail is rotated to make the differential cylinder 75 adjust the zero point and measure. After the differential cylinder 75 is calibrated, the detection mechanism 7 is started to rotate the micrometer screw 76, so that the differential screw contacts the other end of the bolt to be measured, and the relative displacement between the differential screw and the differential cylinder 75 will be converted into a linear measurement value, with the reference of the differential cylinder 75 The scale value of the fixed sleeve 74 on the left is read with the reference line as the reference, and then the scale on the scale line of the differential cylinder 75 aligned with the reference line is read with the reference line of the fixed sleeve 74, which is the scale value of the differential cylinder 75. The scale value of the fixed sleeve 74 is added to the scale value of the differential cylinder 75, which is the measured value. The user can read the value directly, or display the measured value under the action of the display unit 79. When the detection work is completed, the micrometer screw 76 is disengaged from its bolt, the user closes the detection mechanism 7, and then starts the cylinder 442. The piston rod of the cylinder 442 is shortened and drives the rack 443 to move to the left. The rack 443 moves to the left and meshes with the gear 441, so that the gear 441 drives the shaft 43 to rotate in the opposite direction, and the shaft 43 drives the first connecting rod 45 to rotate in the opposite direction. The connecting rod 45 rotates from a vertical state to a vertical state, so that the first connecting rod 45 drives the connecting shaft 46 to move, the connecting shaft 46 drives the second connecting rod 47 to move upward and rotate, the second connecting rod 47 drives the supporting shaft 48 to move upward, the supporting shaft 48 drives the connecting plate 49 to move upward, the connecting plate 49 drives the fixing block 410 to move upward, the fixing block 410 drives the push plate 411 to move upward, the push plate 411 drives the detection mechanism 7 and the clamping mechanism 8 to move upward, the clamping mechanism 8 and the detection mechanism 7 move out of contact with the bolt, and then the user will carry out the next step of the detected bolt, so that the bolt to be tested can be automatically tested, the diameter of the bolt to be tested can be accurately measured, and the result will be displayed for quality control and necessary adjustments.At the same time, it can clamp and fix the bolts to be tested, ensuring that they will not move during the testing process, making it easier to test the bolts and improving the stability and accuracy of the test.

[0120] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A diameter detection device for bolt production, characterized in that: include: Bottom plate (1); A limit seat (2) is arranged on the top of the base plate (1); A plurality of positioning grooves (3) are evenly spaced and arranged on the limiting seat (2) for placing the bolts to be tested; A detection mechanism (7), arranged on the base plate (1), for detecting the diameter of the bolt to be tested; A driving mechanism (4) is arranged on the base plate (1) and is used to drive the detection mechanism (7) to detect the bolt to be detected; The driving mechanism (4) comprises: A support plate (41) is arranged on the left side of the top of the base plate (1); A bracket (42) is arranged at the front and rear sides of the bottom of the support plate (41); A rotating shaft (43) is rotatably disposed between the two brackets (42); A power unit (44) is disposed on the support plate (41), and the power unit (44) provides power to drive the rotating shaft (43) to rotate; A first connecting rod (45) is arranged on the rotating shaft (43); A connecting shaft (46) is arranged on the first connecting rod (45), and the connecting shaft (46) is far away from the rotating shaft (43); A second connecting rod (47) is rotatably disposed on the connecting shaft (46); A support shaft (48) is arranged at the lower end of the second connecting rod (47); A connecting plate (49) is arranged at the front and rear ends of the support shaft (48); A fixing block (410) is arranged between the bottoms of the two connecting plates (49); A push plate (411) is arranged at the bottom of the fixed block (410), and the detection mechanism (7) is located on the push plate (411).

2. A diameter detection device for bolt production according to claim 1, characterized in that: The power unit (44) comprises: A gear (441) is disposed on the rotating shaft (43); A cylinder (442) is disposed on the support plate (41); A rack (443) is arranged on the piston rod of the cylinder (442), and the rack (443) is meshed with the gear (441).

3. A diameter detection device for bolt production according to claim 1, characterized in that: The fixing block (410) and the push plate (411) are connected via a fixing mechanism (5), and the fixing mechanism (5) comprises: A mounting plate (51) is arranged on the left and right sides of the fixing block (410), and the mounting plate (51) is in contact with the push plate (411); A positioning hole (52) is formed on the mounting plate (51); A fastening screw (53) passes through the positioning hole (52) and is threadedly connected to the push plate (411).

4. A diameter detection device for bolt production according to claim 1, characterized in that: The bottom plate (1) is provided with a guide mechanism (6) for enabling the push plate (411) to move stably, and the guide mechanism (6) comprises: A support seat (61) is arranged on the left and right sides of the top of the bottom plate (1); A guide rod (62) is arranged on the support seat (61); A slide groove (63), wherein the push plate (411) is provided with a slide groove (63) on both sides thereof, which slides in cooperation with the guide rod (62), and the guide rod (62) is connected to the slide groove (63) in a sliding manner.

5. A diameter detection device for bolt production according to claim 1, characterized in that: The detection mechanism (7) comprises: A fixing plate (71) is arranged at the bottom of the push plate (411); A ruler frame (72) is arranged on the rear side of the fixing plate (71) and has the same number as the clamping slots (3) and corresponds one to one; A measuring anvil (73) is arranged on the front side of the ruler frame (72); A fixed sleeve (74) is arranged at the rear side of the ruler frame (72); A differential cylinder (75) is arranged at the rear side of the fixed sleeve (74); A micrometer screw (76) is movably disposed between the fixed sleeve (74) and the differential cylinder (75), and the micrometer screw (76) extends forward to pass through the fixed sleeve (74), and the micrometer screw (76) is parallel to the measuring anvil (73); A tail knob (78) rotatably disposed on the rear side of the differential cylinder (75); A display unit (79) is arranged at the bottom of the differential cylinder (75) and is used to display the measured value.

6. A diameter detection device for bolt production according to claim 5, characterized in that: It also includes a clamping mechanism (8), wherein the clamping mechanism (8) includes: A connecting frame (81) is arranged on the left and right sides of the fixing plate (71); The clamp (82) is arranged between the two connecting frames (81), and the clamp (82) is located above the limiting seat (2).

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