Height detection device with automatic feeding function

Abstract

The utility model discloses an automatic feeding height detection device, which belongs to the field of hardware part detection and comprises a workbench, and a feeding mechanism for realizing uniform feeding is mounted on the workbench. The workbench is provided with a transmission mechanism for realizing accurate transmission of components; the workbench is provided with a distance measuring mechanism used for detecting the height of a component. The workbench is provided with a picking mechanism for distinguishing qualified parts from unqualified parts; the transmission mechanism comprises a driving assembly, a supporting plate and a connecting rod assembly. The supporting plate is fixedly connected to the top of the workbench, the driving assembly is connected to the rear side of the supporting plate, and the connecting rod assembly is connected to the front side of the workbench. The device can accurately and uniformly convey components to the distance measuring mechanism and the picking mechanism, the error rate during detection can be reduced, and the structural cost can be reduced; and meanwhile, the device can be matched to accurately distinguish qualified parts from unqualified parts, the part screening accuracy is improved, and the qualified parts and the unqualified parts are prevented from being stored mistakenly.

Description

Technical Field

[0001] This utility model relates to the field of hardware parts testing, specifically to an automatic feeding height detection device. Background Technology

[0002] In the production process of hardware parts, in order to ensure that the parts can be used normally in subsequent assembly production and not hinder the assembly process, it is necessary to conduct random inspections or individual inspections on the parts. Among them, the height of the parts is an important indicator.

[0003] Chinese patent CN214470516U discloses a height detection machine, whose structure uses a vibratory feeder and conveyor belt to transport parts to a height detector. The height detector detects the height of the hardware parts, and then separates and stores good products and defective products through air nozzles.

[0004] However, when the structure transports the detection components to the height detector via a vibratory feeder and conveyor belt, it may cause uneven component arrangement and component tilting. Additional sensors are needed to determine the presence or absence of components; otherwise, it will affect the height detector's judgment and increase the error rate of the structure. Secondly, when the structure performs height detection under the premise of uneven component distribution, the use of air nozzles may cause the components to be too dense, affecting the detection results of other components and leading to the incorrect storage of qualified and unqualified components.

[0005] Based on this, the present invention designs an automatic feeding height detection device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an automatic feeding height detection device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An automatic feeding height detection device includes a worktable, wherein the worktable is equipped with a feeding mechanism to achieve uniform feeding.

[0009] The workbench is equipped with a transmission mechanism that enables accurate transmission of components;

[0010] The workbench is equipped with a distance measuring mechanism for detecting the height of components;

[0011] The workbench is equipped with a rejection mechanism that distinguishes between qualified and unqualified parts;

[0012] The transmission mechanism includes a drive assembly, a support plate, and a linkage assembly; the support plate is fixedly connected to the top of the worktable, the drive assembly is connected to the rear side of the support plate, and the linkage assembly is connected to the front side of the worktable.

[0013] Furthermore, the feeding mechanism includes a geared motor, a rotating roller, a receiving tray, and a discharging assembly; the geared motor is fixedly connected to the bottom of the workbench, the output end of the geared motor passes through the workbench, and the output end of the geared motor is fixedly connected to the lower end of the rotating roller, the receiving tray is fixedly connected to the middle of the rotating roller, and the discharging assembly is fixedly connected to the top of the rotating roller; the receiving tray is located directly below the connecting rod assembly.

[0014] Furthermore, the unloading assembly includes a first partition, a second partition, a partition groove, a discharge cylinder, a first cylinder groove, a second cylinder groove, and a limiting connecting rod; the top of the rotating roller is fixedly connected to the first partition and the second partition, the first partition is located above the second partition, both the first partition and the second partition are evenly provided with multiple partition grooves, the limiting connecting rod is fixedly connected to the top of the workbench, the limiting connecting rod is fixedly connected to the discharge cylinder by a buckle, the top of the discharge cylinder is provided with a first cylinder groove that cooperates with the first partition and a second cylinder groove that cooperates with the second partition.

[0015] Furthermore, the partition grooves of the first partition and the partition grooves of the second partition are arranged alternately.

[0016] Furthermore, the drive assembly includes a first cylinder, a first rack, a first gear, and a limiting block; the first cylinder and multiple limiting blocks are fixedly connected to the rear side of the support plate, the right limiting block is fixedly connected to the first cylinder, the output end of the first cylinder is fixedly connected to the first rack, the first rack is meshed with two first gears, and the left limiting block is slidably connected to the bottom of the first rack.

[0017] Furthermore, the linkage assembly includes a first rotating shaft, a first connecting strip, a second rotating shaft, a second connecting strip, a sliding limit block, a slide groove, a fixing block, and a suction cup; the front end of the first rotating shaft is fixedly connected to one end of the first connecting strip, the rear end of the first rotating shaft is rotatably connected to the support plate through a bearing, the rear end of the first rotating shaft is fixedly connected to the first gear, and the other end of the first connecting strip is rotatably connected to the second rotating shaft.

[0018] Furthermore, the second rotating shaft is rotatably connected to one end of the second connecting strip, and the other end of the second connecting strip is fixedly connected to the fixing block. A suction cup is fixedly connected to the bottom of the fixing block. A sliding groove is provided on the front side of the support plate, the rear end of the sliding limit block is slidably connected to the sliding groove, and the front end of the sliding limit block is slidably connected to the second connecting strip.

[0019] Furthermore, the suction cup is located above the ranging mechanism and the rejection mechanism.

[0020] Furthermore, the ranging mechanism includes a support rod, a positioning plate, an infrared rangefinder, and a testing platform; the support rod and the testing platform are fixedly connected to the top of the workbench, the support rod is located in front of the testing platform, the top of the support rod is fixedly connected to the positioning plate, the top of the positioning plate is fixedly connected to the infrared rangefinder, and the infrared rangefinder is located directly above the testing platform.

[0021] Furthermore, the rejection mechanism includes a second cylinder, a second rack, a third rotating shaft, a second gear, and a feeding plate; the second cylinder is fixedly connected to the top of the worktable, the third rotating shaft is rotatably connected to the top of the worktable, the output end of the second cylinder is fixedly connected to the second rack, the side of the third rotating shaft is fixedly connected to the second gear, the second rack and the second gear are meshed together, and the top of the third rotating shaft is fixedly connected to the feeding plate.

[0022] This utility model has the following technical effects:

[0023] 1. When using this utility model, the suction cup on the right side of the linkage assembly of the transmission mechanism is activated. The suction cup grips the first component, and the first cylinder of the drive assembly is activated. The output end of the first cylinder extends, and the first cylinder drives the first rack to move to the left. The first rack drives the meshing first gear to rotate. The limiting block provides a limit for the first cylinder and the first rack. The first gear drives the fixedly connected first rotating shaft to rotate. The first cylinder drives the first connecting bar to rotate around the first cylinder as the axis. The second connecting bar moves under the drive of the first connecting bar and moves to directly above the ranging mechanism under the limit of the sliding limiting block. The sliding limiting block moves under the limit of the slide groove and always limits the second connecting bar in the vertical direction, so that the second connecting bar moves in the vertical direction. The second connecting bar drives the first component to move to directly above the ranging mechanism through the fixed block and the suction cup. The suction cup on the right side releases the first component, and the first component is placed directly above the ranging mechanism. The first cylinder is activated again, and the output end of the first cylinder retracts. The first connecting bar rotates in the opposite direction. During the rotation of the first connecting strip, the fixing block is no longer directly above the first component and is detected by the ranging mechanism. When the detection is complete, the first cylinder fully resets, the left suction cup moves to directly above the first component, and the right suction cup is directly above the second component. The left suction cup grabs the first component, and the right suction cup grabs the second component. The first cylinder is restarted, and the first component is transported by the left suction cup to directly above the rejection mechanism. The left suction cup places the first component into the rejection mechanism, and the right suction cup places the second component into the ranging mechanism. The first cylinder is restarted again, and the output end of the first cylinder retracts. During the retraction of the first cylinder, the ranging mechanism completes the detection of the second component. When the first cylinder retracts completely, the left suction cup is directly above the second component, the right suction cup is directly above the third component, and so on. This structure can accurately and evenly transport components to the ranging and rejection mechanisms, reducing the error rate during detection. The structure is simple and can reduce structural costs.

[0024] 2. The present invention uses a geared motor to start the feeding mechanism. The geared motor drives the rotating roller, the receiving tray, the first partition, the second partition, and the partition groove to rotate. The components are located inside the feeding cylinder. The first component falls onto the upper surface of the first partition. Under the rotation of the first partition, the first partition is movably connected to the inner wall of the first cylinder groove. When the partition groove of the first partition rotates to the first cylinder groove, the first component falls down onto the upper surface of the second partition, and the second component falls onto the upper surface of the second component. During this process, the limiting connecting rod is used to realize the installation of the structure. The rotating roller continues to rotate, and the first partition is movably connected to the inner wall of the first cylinder groove again. The first component falls down onto the upper surface of the receiving tray, and the second component is squeezed by the first partition and moves to the upper surface of the first partition, and so on. This structure can achieve uniform feeding through the staggered partition grooves, providing good preconditions for the transmission and transportation of the transmission mechanism.

[0025] 3. If the component inspection result is qualified, the second cylinder of the rejection mechanism is not activated, and the component falls onto the upper surface of the feeding plate and is directly discharged. If the component inspection result is unqualified, the second cylinder is activated, the output end of the second cylinder extends, and the output end of the second cylinder drives the second rack to move to the left. The second rack drives the second gear to rotate, the second gear drives the third rotating shaft to rotate, and the third rotating shaft drives the feeding plate to rotate, so that the lower end of the third rotating shaft rotates to the other side and discharges the unqualified component. This structure can accurately distinguish between qualified and unqualified components, improve the accuracy of component screening, and prevent qualified and unqualified components from being stored incorrectly. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 The three-dimensional representation of this utility model Figure 1 ;

[0028] Figure 2 This is a front view of the present invention;

[0029] Figure 3 The three-dimensional representation of this utility model Figure 2 ;

[0030] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0031] Figure 5 for Figure 1 Enlarged view of point B in the middle;

[0032] Figure 6 This is the sorting mechanism of this utility model.

[0033] The labels in the diagram represent:

[0034] 1. Workbench; 2. Feeding mechanism; 21. Gear motor; 22. Rotating roller; 23. Receiving tray; 24. Unloading assembly; 241. First partition; 242. Second partition; 243. Partition groove; 244. Discharge cylinder; 245. First cylinder groove; 246. Second cylinder groove; 247. Limiting connecting rod; 3. Transmission mechanism; 31. Drive assembly; 311. First cylinder; 312. First rack; 313. First gear; 314. Limiting block; 32. Support plate; 3 3. Linkage assembly; 331. First rotating shaft; 332. First connecting bar; 333. Second rotating shaft; 334. Second connecting bar; 335. Sliding limit block; 336. Slide groove; 337. Fixing block; 338. Suction cup; 4. Distance measuring mechanism; 41. Support rod; 42. Positioning plate; 43. Infrared rangefinder; 44. Detection table; 5. Rejection mechanism; 51. Second cylinder; 52. Second rack; 53. Third rotating shaft; 54. Second gear; 55. Feeding plate. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] The present invention will be further described below with reference to the embodiments.

[0037] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to... Figure 2 The direction of the viewpoint.

[0038] Please refer to the instruction manual appendix. Figure 1-6 An automatic feeding height detection device includes a worktable 1;

[0039] The workbench 1 is equipped with a feeding mechanism 2 to achieve uniform material feeding;

[0040] The feeding mechanism 2 includes a geared motor 21, a rotating roller 22, a receiving tray 23, and a discharge assembly 24. The geared motor 21 is fixedly connected to the bottom of the workbench 1, the output end of the geared motor 21 passes through the workbench 1, and the output end of the geared motor 21 is fixedly connected to the lower end of the rotating roller 22. The receiving tray 23 is fixedly connected to the middle of the rotating roller 22, and the discharge assembly 24 is fixedly connected to the top of the rotating roller 22. The receiving tray 23 is located directly below the transmission mechanism 3.

[0041] The unloading assembly 24 includes a first partition 241, a second partition 242, a partition groove 243, a discharge cylinder 244, a first cylinder groove 245, a second cylinder groove 246, and a limiting connecting rod 247. The top of the rotating roller 22 is fixedly connected to the first partition 241 and the second partition 242. The first partition 241 is located above the second partition 242. The first partition 241 and the second partition 242 are evenly provided with multiple partition grooves 243. The partition grooves 243 of the first partition 241 and the partition grooves 243 of the second partition 242 are staggered vertically. The limiting connecting rod 247 is fixedly connected to the top of the workbench 1. The limiting connecting rod 247 is fixedly connected to the discharge cylinder 244 by a buckle. The top of the discharge cylinder 244 is provided with a first cylinder groove 245 that cooperates with the first partition 241 and a second cylinder groove 246 that cooperates with the second partition 242.

[0042] In use, the geared motor 21 of the feeding mechanism 2 is started. The geared motor 21 drives the rotating roller 22, the receiving tray 23, the first partition 241, the second partition 242, and the partition groove 243 to rotate. The components are located inside the feeding cylinder 244. The first component falls to the upper surface of the first partition 241. With the rotation of the first partition 241, the first partition 241 is movably connected to the inner wall of the first cylinder groove 245. When the partition groove 243 of the first partition 241 rotates to the first cylinder groove 245, the first component falls down to the upper surface of the second partition 242. The second component falls to the upper surface of the second component. During this process, the limiting connecting rod 247 is used to realize the installation of the structure. The rotating roller 22 continues to rotate, and the first partition 241 is once again movably connected to the inner wall of the first cylinder trough 245. The first component falls down to the upper surface of the receiving tray 23, and the second component is squeezed by the first partition 241 and moves to the upper surface of the first partition 241, and so on. This structure can achieve uniform feeding through the staggered partition troughs 243, providing good preconditions for the transmission and transportation of the transmission mechanism 3.

[0043] The workbench 1 is equipped with a transmission mechanism 3 that enables accurate transmission of components;

[0044] The transmission mechanism 3 includes a drive assembly 31, a support plate 32, and a connecting rod assembly 33; the support plate 32 is fixedly connected to the top of the workbench 1, the drive assembly 31 is connected to the rear side of the support plate 32, and the connecting rod assembly 33 is connected to the front side of the workbench 1.

[0045] The drive assembly 31 includes a first cylinder 311, a first rack 312, a first gear 313, and a limiting block 314; the first cylinder 311 and multiple limiting blocks 314 are fixedly connected to the rear side of the support plate 32, the right limiting block 314 is fixedly connected to the first cylinder 311, the output end of the first cylinder 311 is fixedly connected to the first rack 312, the first rack 312 is meshed with two first gears 313, and the left limiting block 314 is slidably connected to the bottom of the first rack 312;

[0046] The connecting rod assembly 33 includes a first rotating shaft 331, a first connecting bar 332, a second rotating shaft 333, a second connecting bar 334, a sliding limit block 335, a slide groove 336, a fixing block 337, and a suction cup 338. The front end of the first rotating shaft 331 is fixedly connected to one end of the first connecting bar 332. The rear end of the first rotating shaft 331 is rotatably connected to the support plate 32 via a bearing. The rear end of the first rotating shaft 331 is fixedly connected to the first gear 313. The other end of the first connecting bar 332 is connected to... The second rotating shaft 333 is rotatably connected to one end of the second connecting bar 334, and the other end of the second connecting bar 334 is fixedly connected to the fixing block 337. A suction cup 338 is fixedly connected to the bottom of the fixing block 337. A sliding groove 336 is provided on the front side of the support plate 32. The rear end of the sliding limit block 335 is slidably connected to the sliding groove 336, and the front end of the sliding limit block 335 is slidably connected to the second connecting bar 334. The suction cup 338 is located above the ranging mechanism 4 and the rejection mechanism 5.

[0047] In use, the suction cup 338 on the right side of the connecting rod assembly 33 of the transmission mechanism 3 is activated. The suction cup 338 grabs the first component, activating the first cylinder 311 of the drive assembly 31. The output end of the first cylinder 311 extends, and the first cylinder 311 drives the first rack 312 to move to the left. The first rack 312 drives the meshing first gear 313 to rotate. The limiting block 314 provides a limit for the first cylinder 311 and the first rack 312. The first gear 313 drives the fixedly connected first rotating shaft 331 to rotate. The first cylinder 311 drives the first connecting bar 332 to rotate around the first cylinder 311 as the axis; the second connecting bar... The first connecting bar 334 moves under the action of the first connecting bar 332 and moves to the top of the ranging mechanism 4 under the limitation of the sliding limit block 335; the sliding limit block 335 moves under the limitation of the slide groove 336 and always limits the vertical direction of the second connecting bar 334, so that the second connecting bar 334 moves in the vertical direction. The second connecting bar 334 drives the first component to move to the top of the ranging mechanism 4 through the fixing block 337 and the suction cup 338. The suction cup 338 on the right releases the first component, and the first component is placed directly above the ranging mechanism 4. The first cylinder 311 is started again, and the output end of the first cylinder 311... The first connecting bar 332 rotates in the reverse direction as the first connecting bar 332 rotates. During this rotation, the fixing block 337 is no longer directly above the first component, and is detected by the ranging mechanism 4. When the detection is complete, the first cylinder 311 is fully reset, the left suction cup 338 moves to directly above the first component, and the right suction cup 338 is directly above the second component. The left suction cup 338 grabs the first component, and the right suction cup 338 grabs the second component. The first cylinder 311 is restarted, and the first component is transported by the left suction cup 338 to directly above the rejection mechanism 5. The left suction cup 338 then... The first component is placed into the rejection mechanism 5, and the suction cup 338 on the right place places the second component into the ranging mechanism 4. The first cylinder 311 is activated again, and the output end of the first cylinder 311 retracts. During the retraction of the first cylinder 311, the ranging mechanism 4 completes the detection of the second component. When the first cylinder 311 has finished retracting, the suction cup 338 on the left is directly above the second component, the suction cup 338 on the right is directly above the third component, and so on. This structure can accurately and evenly transport components to the ranging mechanism 4 and the rejection mechanism 5, which can reduce the error rate during detection. The structure is simple and can reduce structural costs.

[0048] The workbench 1 is equipped with a distance measuring mechanism 4 for detecting the height of components;

[0049] The ranging mechanism 4 includes a support rod 41, a positioning plate 42, an infrared rangefinder 43, and a detection platform 44; the support rod 41 and the detection platform 44 are fixedly connected to the top of the workbench 1, the support rod 41 is located in front of the detection platform 44, the top of the support rod 41 is fixedly connected to the positioning plate 42, the top of the positioning plate 42 is fixedly connected to the infrared rangefinder 43, and the infrared rangefinder 43 is located directly above the detection platform 44;

[0050] In use, the suction cup 338 of the linkage assembly 33 of the transmission mechanism 3 places the component on the upper surface of the detection platform 44 of the ranging mechanism 4. When the suction cup 338 leaves, the infrared rangefinder 43 shines downward and calculates the distance from the infrared rangefinder 43 to the upper surface of the component. Given the distance from the infrared rangefinder 43 to the upper surface of the detection platform 44, the height of the component can be determined. The support rod 41 and the positioning plate 42 are used to install the infrared rangefinder 43. This structure can quickly determine the height of the component without hindering the operation of other components.

[0051] The workbench 1 is equipped with a rejection mechanism 5 that distinguishes between qualified and unqualified parts;

[0052] The sorting mechanism 5 includes a second cylinder 51, a second rack 52, a third rotating shaft 53, a second gear 54, and a feeding plate 55; the second cylinder 51 is fixedly connected to the top of the workbench 1, the third rotating shaft 53 is rotatably connected to the top of the workbench 1, the output end of the second cylinder 51 is fixedly connected to the second rack 52, the side of the third rotating shaft 53 is fixedly connected to the second gear 54, the second rack 52 and the second gear 54 are meshed together, and the top of the third rotating shaft 53 is fixedly connected to the feeding plate 55.

[0053] In use, if the component inspection result is qualified, the second cylinder 51 of the rejection mechanism 5 is not activated, and the component falls onto the upper surface of the discharge plate 55 and is directly discharged; if the component inspection result is unqualified, the second cylinder 51 is activated, the output end of the second cylinder 51 extends, the output end of the second cylinder 51 drives the second rack 52 to move to the left, the second rack 52 drives the second gear 54 to rotate, the second gear 54 drives the third rotating shaft 53 to rotate, the third rotating shaft 53 drives the discharge plate 55 to rotate, so that the lower end of the third rotating shaft 53 rotates to the other side and discharges the unqualified component; this structure can accurately distinguish between qualified and unqualified components, improve the accuracy of component screening, and prevent qualified and unqualified components from being stored incorrectly.

[0054] like Figure 1-6 As shown, in a preferred embodiment of the present invention, the suction cup 338 is preferably a vacuum suction cup; this structure has low cost, is easy to use, and is suitable for some lightweight parts with relatively smooth upper surfaces.

[0055] like Figure 1-6As shown, in a preferred embodiment of the present invention, the suction cup 338 is preferably an electromagnetic suction cup; this structure uses electromagnetic principles to generate magnetic force to achieve gripping and releasing, and is suitable for some parts that are heavy or difficult to grip.

[0056] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic feeding height detection device, comprising a worktable (1), characterized in that: The workbench (1) is equipped with a feeding mechanism (2) to achieve uniform feeding; The workbench (1) is equipped with a transmission mechanism (3) that enables accurate transmission of components. The workbench (1) is equipped with a distance measuring mechanism (4) for detecting the height of the component. The workbench (1) is equipped with a rejection mechanism (5) that distinguishes between qualified and unqualified parts; The transmission mechanism (3) includes a drive assembly (31), a support plate (32), and a linkage assembly (33); the support plate (32) is fixedly connected to the top of the workbench (1), the drive assembly (31) is connected to the rear side of the support plate (32), and the linkage assembly (33) is connected to the front side of the workbench (1).

2. The height detection device for automatic feeding according to claim 1, characterized in that, The feeding mechanism (2) includes a geared motor (21), a rotating roller (22), a receiving tray (23), and a discharge assembly (24). The geared motor (21) is fixedly connected to the bottom of the workbench (1), the output end of the geared motor (21) passes through the workbench (1), and the output end of the geared motor (21) is fixedly connected to the lower end of the rotating roller (22). The receiving tray (23) is fixedly connected to the middle of the rotating roller (22), and the discharge assembly (24) is fixedly connected to the top of the rotating roller (22). The receiving tray (23) is located directly below the connecting rod assembly (33).

3. The height detection device for automatic feeding according to claim 2, characterized in that, The unloading assembly (24) includes a first partition (241), a second partition (242), a partition groove (243), a discharge cylinder (244), a first cylinder groove (245), a second cylinder groove (246), and a limiting connecting rod (247). The top of the rotating roller (22) is fixedly connected to the first partition (241) and the second partition (242). The first partition (241) is located above the second partition (242). The first partition (241) and the second partition (242) are both evenly provided with multiple partition grooves (243). The limiting connecting rod (247) is fixedly connected to the top of the workbench (1). The limiting connecting rod (247) is fixedly connected to the discharge cylinder (244) by a buckle. The top of the discharge cylinder (244) is provided with a first cylinder groove (245) that cooperates with the first partition (241) and a second cylinder groove (246) that cooperates with the second partition (242).

4. The height detection device for automatic feeding according to claim 3, characterized in that, The partition groove (243) of the first partition (241) and the partition groove (243) of the second partition (242) are arranged alternately.

5. The height detection device for automatic feeding according to claim 4, characterized in that, The drive assembly (31) includes a first cylinder (311), a first rack (312), a first gear (313), and a limiting block (314). The first cylinder (311) and multiple limiting blocks (314) are fixedly connected to the rear side of the support plate (32). The limiting block (314) on the right side is fixedly connected to the first cylinder (311). The output end of the first cylinder (311) is fixedly connected to the first rack (312). The first rack (312) is meshed with two first gears (313). The limiting block (314) on the left side is slidably connected to the bottom of the first rack (312).

6. The height detection device for automatic feeding according to claim 5, characterized in that, The connecting rod assembly (33) includes a first rotating shaft (331), a first connecting bar (332), a second rotating shaft (333), a second connecting bar (334), a sliding limit block (335), a slide groove (336), a fixing block (337), and a suction cup (338). The front end of the first rotating shaft (331) is fixedly connected to one end of the first connecting bar (332), the rear end of the first rotating shaft (331) is rotatably connected to the support plate (32) through a bearing, the rear end of the first rotating shaft (331) is fixedly connected to the first gear (313), and the other end of the first connecting bar (332) is rotatably connected to the second rotating shaft (333).

7. The height detection device for automatic feeding according to claim 6, characterized in that, The second rotating shaft (333) is rotatably connected to one end of the second connecting bar (334), and the other end of the second connecting bar (334) is fixedly connected to the fixing block (337). The bottom of the fixing block (337) is fixedly connected to a suction cup (338). The front side of the support plate (32) is provided with a sliding groove (336), the rear end of the sliding limit block (335) is slidably connected to the sliding groove (336), and the front end of the sliding limit block (335) is slidably connected to the second connecting bar (334).

8. The height detection device for automatic feeding according to claim 6, characterized in that, The suction cup (338) is located above the ranging mechanism (4) and the rejection mechanism (5).

9. The height detection device for automatic feeding according to claim 8, characterized in that, The ranging mechanism (4) includes a support rod (41), a positioning plate (42), an infrared rangefinder (43), and a testing platform (44); the support rod (41) and the testing platform (44) are fixedly connected to the top of the workbench (1), the support rod (41) is located in front of the testing platform (44), the top of the support rod (41) is fixedly connected to the positioning plate (42), the top of the positioning plate (42) is fixedly connected to the infrared rangefinder (43), and the infrared rangefinder (43) is located directly above the testing platform (44).

10. The height detection device for automatic feeding according to claim 9, characterized in that, The sorting mechanism (5) includes a second cylinder (51), a second rack (52), a third rotating shaft (53), a second gear (54), and a feed plate (55). The second cylinder (51) is fixedly connected to the top of the workbench (1), and the third rotating shaft (53) is rotatably connected to the top of the workbench (1). The output end of the second cylinder (51) is fixedly connected to the second rack (52), and the side of the third rotating shaft (53) is fixedly connected to the second gear (54). The second rack (52) and the second gear (54) are meshed together, and the top of the third rotating shaft (53) is fixedly connected to the feed plate (55).

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