Part height detection equipment

Abstract

The utility model discloses a part height detection device. The equipment comprises a workbench, a material box mechanism connected into a PLC (Programmable Logic Controller) control system, a tray hooking mechanism, a height detection mechanism, a material moving mechanism and an unqualified product collecting mechanism. The material box mechanism comprises a material disc provided with a grabbed part, a material box frame and a material box driving component. The disc hooking mechanism comprises a grabbing part, a grabbing driving part and a pushing driving part I; and the material moving mechanism comprises a material grabbing and unloading assembly and a moving driving assembly for driving the material grabbing and unloading assembly to move above the tray hooking mechanism, the height detection mechanism and the unqualified product collecting mechanism. During operation, the grabbing part grabs the grabbed part and then drags the whole material disc out of the material box frame, and the material moving mechanism moves to-be-detected parts in the material disc into the detection mechanism for height detection; and after the detection is finished, the material moving mechanism transfers the detected qualified products back to the material disc, and sends the detected unqualified products into the unqualified product collecting mechanism. The device can be used for part height detection operation.

Description

Technical Field

[0001] The utility model relates to the technical field of part size detection, in particular to a part height detection device. Background Art

[0002] Parts are the basic elements of a machine. The fuel distribution pipe also contains various parts, such as pipe joints, injector seats and bracket blocks. The above parts are relatively small in size, but the processing size accuracy is required to be high. If unqualified parts with inconsistent sizes are assembled or welded into finished parts, various safety hazards will occur during actual use.

[0003] To this end, during the production and processing stage, it is necessary to carry out composite dimensional inspection of the parts themselves, especially height inspection, so as to screen the parts in the processing process and eliminate the parts whose height does not meet the requirements.

[0004] The traditional detection method is to manually fix the parts to be tested and then use calipers to check and verify the height of the parts. Manual operation is inefficient and has large errors. It does not meet the high efficiency and high precision requirements of modern production, and it is more likely to miss inspections. Therefore, it is particularly important to design a part overall height detection mechanism to detect part height. Utility Model Content

[0005] The utility model aims to provide a part height detection device to solve the technical problems of low efficiency, large error and the like caused by manual height detection of parts in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A parts height detection device comprises a workbench, a material box mechanism is arranged on one side of the workbench; a hook plate mechanism, a height detection mechanism and a defective product collection mechanism for placing defective parts that have been detected are arranged on the upper end of the workbench; a material transfer mechanism is also arranged above the hook plate mechanism, the height detection mechanism and the defective product collection mechanism; the material box mechanism, the hook plate mechanism, the height detection mechanism and the material transfer mechanism are all connected to a PLC control system;

[0008] The material box mechanism includes a plurality of material trays for placing the parts to be tested, a material box frame, and a material box driving component for driving the material box frame to move up and down;

[0009] The material box frame is provided with a plurality of bracket components for supporting the material tray, which are distributed up and down; the material tray is also provided with a grasping portion; and the material tray inlet and outlet are provided at one end of the material box frame facing the hooking tray mechanism;

[0010] The hook plate mechanism is located at the rear side of the material box frame, and includes a grabbing part, a grabbing driving component for driving the grabbing part to grab the grabbed part, a push driving component 1 for driving the grabbing part to move back and forth, and a bracket component 2 for holding the material tray;

[0011] The material transfer mechanism includes a material grabbing and unloading assembly and a moving drive assembly that drives the material grabbing and unloading assembly to move above the hook plate mechanism, the height detection mechanism and the unqualified product collecting mechanism;

[0012] The material grabbing and unloading assembly includes a material grabbing claw cylinder and a push driving component 2 for driving the material grabbing claw cylinder to move up and down and back and forth;

[0013] The height detection mechanism includes a detection platform and a displacement sensor located above the detection platform; a detection position is arranged on the detection platform; the height detection mechanism also includes a push drive component three for driving the detection platform or the displacement sensor to move back and forth horizontally.

[0014] Furthermore, the moving end of the push drive component 2 is connected to the material grabbing claw cylinder through a connecting plate 2; the material grabbing claw cylinder includes a loading claw cylinder and a unloading claw cylinder.

[0015] Furthermore, the bracket component 2 includes a left bracket 2 and a right bracket 2 distributed on the left and right sides; it also includes a left limit end of the material tray and a right limit end of the material tray, and the bracket component 2 is located between the left limit end of the material tray and the right limit end of the material tray.

[0016] Furthermore, it also includes several indicator lights connected to the PLC control system.

[0017] Furthermore, a parts limiting groove is provided on the material tray.

[0018] Furthermore, the defective product collection mechanism is a belt conveyor; a front-end sensor and a rear-end sensor are also provided on one side of the belt conveyor, and the front-end sensor and the rear-end sensor are distributed in sequence along the conveying direction of the belt conveyor; the belt conveyor, the front-end sensor and the rear-end sensor are all connected to the PLC control system.

[0019] Furthermore, the moving drive component includes a linear drive component 1 that drives the material grabbing and unloading component to move horizontally left and right, and a linear drive component 2 that drives the linear drive component 1 to move forward and backward; the push drive component 2 is connected to the linear drive component 1;

[0020] The material moving mechanism is supported above the hook plate mechanism and the height detection mechanism through a support frame; the support frame includes a left support frame and a right support frame distributed on the left and right; the linear drive component 2 is fixedly connected to the left support frame, and the linear drive component 1 is slidably connected to the right support frame forward and backward.

[0021] Furthermore, it also includes a pressing piece and upper and lower cylinders for driving the pressing piece to move up and down; the pressing piece is located above the bracket component 2.

[0022] Furthermore, the grasped portion is a pin hole that passes through from top to bottom; and the grasping portion is a pin that extends longitudinally and is used to be inserted into the pin hole.

[0023] Compared with the prior art, the utility model provides a part height detection device, which has the following beneficial effects:

[0024] In the utility model, a height detection device connected to a PLC operating system is used to detect the height of parts. During operation, a material tray is used to place the parts to be tested, and multiple material trays filled with parts to be tested can be stacked and placed in a material box frame at one time. Driven by the material box driving component, the material box frame can move up and down to move the material tray carrying the parts to be tested to a specified height; when the material tray carrying the parts to be tested moves to the specified height, the grasping part can move toward the grasped part on the front side under the drive of the push driving component, and grasp the grasped part after aligning with the grasped part, and then the grasping part resets and moves back to drag the corresponding material tray out of the material box frame as a whole. After being completely dragged out of the material box frame as a whole, the material tray is placed on the upper end of the bracket component 2.

[0025] After the material grabbing claw cylinder grabs the parts, the parts can be driven to move between the upper part of the bracket component 2, the upper part of the testing table and the upper part of the defective product collecting mechanism under the drive of the moving driving component.

[0026] When the displacement sensor completes the height detection of the part to be measured, the part to be measured becomes the measured part; if the height of the measured part is qualified, the material transfer mechanism will transfer it back to the material tray at the upper end of the bracket component 2; if the height of the measured part is unqualified, the material transfer mechanism will transfer it to the unqualified product collection mechanism.

[0027] When all the parts to be tested in the dragged out tray have completed the height detection operation, and all the qualified parts have been transferred back to the tray, the gripping part moves forward again and pushes the tray with the qualified parts back to the original position of the material box frame. After the gripping part is separated from the gripped part and reset and moved back, the material box frame moves longitudinally to transfer the next tray with the parts to be tested to the specified height, and repeat the same operation. When the parts to be tested in all trays have completed the height detection operation and all trays have been pushed back to the material box frame, the operation of the height detection equipment can be stopped, and finally all the trays with qualified parts are manually taken out from the material box frame.

[0028] Through the height detection device of the utility model, we can realize the batch height detection operation of the parts to be tested, and can also separate and classify the qualified parts and the unqualified parts after completing the height detection. In the utility model, the operation between the various mechanisms can be well coordinated through the PLC control system, which can improve the efficiency of the batch height detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the parts height detection equipment in the utility model.

[0030] Figure 2 It is a side view of the part height detection device in the utility model.

[0031] Figure 3 It is a top view of the part height detection device in the utility model.

[0032] Figure 4 It is a side view of the material box mechanism in the utility model.

[0033] Figure 5 It is a left view of the material box frame in the utility model.

[0034] Figure 6 It is a top view of the material box frame after the upper bottom plate is removed in the utility model.

[0035] Figure 7 It is a top view of the hook plate mechanism in the utility model.

[0036] Figure 8 It is a side view of the hook plate mechanism in the utility model.

[0037] Fig. 9 It is a schematic diagram of the connection structure of the push drive component 1, the latch drive component, the latch and the tray top supporting part in the utility model.

[0038] Fig.10 It is a side view of the height detection mechanism in the utility model. Figure 1 .

[0039] Fig.11 It is a side view of the height detection mechanism in the utility model. Figure 2 .

[0040] Fig.12 It is a side view of the material moving mechanism and the supporting frame in the utility model.

[0041] In the picture:

[0042] 1- working table, 2- material box mechanism, 3- hook plate mechanism, 4- material transfer mechanism, 5- height detection mechanism, 6- unqualified product collection mechanism;

[0043] 210- material box driving component, 211- material box frame, 212- supporting connection block, 213- sliding block 1, 214- material tray sensor, 215- upper bottom plate, 216- lower bottom plate 216, 217- reinforcing plate ribs, 218- mounting plate 1, 219- mounting plate 2, 220- through port, 221- bracket support plate;

[0044] 310- push drive component 1, 311- latch drive component, 312- latch, 313- left fixed block, 314- right fixed block, 315- left bracket 2, 316- right bracket 2, 317- left upper and lower cylinders, 318- right upper and lower cylinders, 319- left top pressure piece, 320- right top pressure piece, 321- mobile limit block, 322- tray top support;

[0045] 410- linear drive component 1, 420- linear drive component 2, 431- connecting plate 1, 432- push drive component 2, 433- connecting plate 2, 434- loading clamping claw cylinder, 435- unloading clamping claw cylinder;

[0046] 500-displacement sensor, 501-support block, 502-connecting frame, 503-testing table, 504-sliding drive component three, 505-testing position;

[0047] 600- conveyor belt, 700- material tray, 701- part limiting groove, 702- pin hole, 810- left support frame, 820- right support frame, 830- indicator light, 840- slide rail, 841- groove slider. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] like Figure 1-12 As shown, the utility model provides a part height detection device, including a workbench 1, a material box mechanism 2 is provided on the front side of the workbench 1; a hook plate mechanism 3, a height detection mechanism 5 and a defective product collection mechanism 6 for placing defective parts that have been tested are provided on the upper end of the workbench 1; a material moving mechanism 4 is also provided above the hook plate mechanism 3, the height detection mechanism 5 and the defective product collection mechanism 6.

[0050] In the utility model, the material box mechanism 2, the hook plate mechanism 3, the material moving mechanism 4 and the height detection mechanism 5 are all connected to the PLC control system, so that the operation coordination and automatic operation between the mechanisms can be realized.

[0051] Among them, Figure 2 , Figure 4 As shown, the material box mechanism 2 in this embodiment includes a plurality of material trays 700 for placing parts to be tested, a material box frame 211 for placing the material trays 700, and a material box driving component 210 for driving the material box frame 211 to move up and down and back and forth.

[0052] In this embodiment, the material box frame 211 is a frame structure, such as Figure 4-6 As shown, the front and rear ends of the material box frame 211 are open and have no baffles. The material box frame 211 mainly includes an upper bottom plate 215 and a lower bottom plate 216. A left side wall and a right side wall are provided between the upper bottom plate 215 and the lower bottom plate 216. The space between the left side wall and the right side wall is the internal space of the material box frame 211. In addition, the left side wall and the right side wall of the material box frame 211 have the same structure, and both include a mounting plate 1 218, a mounting plate 219, and a reinforcing plate rib 217 for enhancing the structural strength. The reinforcing plate rib 217 is located between the mounting plate 1 218 and the mounting plate 219. At the same time, as Figure 5 As shown, the mounting plate 1 218, the mounting plate 219 and the reinforcing plate rib 217 are all long strip-shaped plates extending up and down; and, a long strip-shaped through opening 220 with the left and right ends passing therethrough is respectively provided between the mounting plate 1 218 and the reinforcing plate rib 217 and between the reinforcing plate rib 217 and the mounting plate 2 219.

[0053] Several layers of bracket components 1 for holding the material tray 700 are arranged inside the material box frame 211. In this embodiment, several bracket components 1 are distributed up and down, and there is a gap between two adjacent layers of bracket components 1, and each layer of bracket components 1 can hold a material tray 700. The bracket component 1 located at the top is the top bracket component 1, and the bracket component 1 located at the bottom is the bottom bracket component 1. During operation, the material tray 700 can be placed into the material box frame 211 from the front end opening of the material box frame 211 and placed on the upper end of the bracket component 1.

[0054] When a material tray 700 is placed on an upper end of each layer of the bracket component, the side walls of all the material trays 700 in the material box frame 211 can be seen through the through opening 220 from the side of the material box frame 211 .

[0055] Preferably, in this embodiment, each layer of the bracket component is composed of four bracket support plates 221, and the upper end surfaces of the four bracket support plates 221 are located at the same height. Figure 6 As shown, two bracket support plates 221 are connected to the left inner wall of the material box frame 211, that is, they are connected to the left mounting plate 1 218 and the left mounting plate 219 respectively; the other two bracket support plates 221 are connected to the right inner wall of the material box frame 211, that is, they are connected to the right mounting plate 1 218 and the right mounting plate 219 respectively. When the material tray 700 is placed on the bracket component 1, it will be placed on the upper ends of the four bracket support plates 221 at the same time. And, as shown in FIG. Figure 5 As shown, viewed from the side, the bracket support plate 221 does not block the through opening 220, and there is no overlapping portion between the two.

[0056] In addition, we can also set the bracket component 1 to a partition structure, that is, the left and right ends of the partition are respectively connected to the left and right inner walls of the material box frame 211. When the material tray 700 is placed on the upper end of the partition, we can make the latch hole 702 located above and behind the rear edge of the partition, that is, the latch hole 702 near the rear side is in a position not blocked by the partition, thereby allowing the latch 312 to be longitudinally inserted into the latch hole 702.

[0057] In this embodiment, the material box driving component 210 is a linear guide rail, which is connected to the side end of the workbench 1. The lower end of the material box frame 211 is fixedly connected to the support connection block 212, and the support connection block 212 is connected to the sliding block 1 213 in the linear guide rail. Driven by the material box driving component 210, the material box frame 211 can move back and forth in the up and down directions.

[0058] Among them, Figure 1-3 As shown, in this embodiment, the hook plate mechanism 3 is located at the upper end of the workbench 1 and at the rear side of the material box mechanism 2, that is, the hook plate mechanism 3 is located at the rear side of the material box frame 211. In this embodiment, the rear end of the material box frame 211 is open, so that the material tray 700 can enter and exit the material box frame 211, and the latch 312 can also enter and exit the material box frame 211, that is, the rear end of the material box frame 211 is provided with a material tray inlet and outlet for the material tray to enter and exit and a latch inlet and outlet for the latch to enter and exit.

[0059] In this embodiment, the hook plate mechanism 3 includes a pin 312 for inserting into the pin hole 702, a pin driving component 311 for driving the pin 312 to move up and down, a push driving component 1 310 for driving the pin 312 to move back and forth in the direction of the pin hole 702, and a bracket component 2 for supporting the material tray 700.

[0060] like Figure 7 As shown, in this embodiment, the pin hole 702 is through-through from top to bottom, close to the rear side of the material tray 700, and located in the middle of the left and right sides.

[0061] The latch 312 is a grasping part, and the latch hole 702 is a grasped part corresponding thereto. When the latch 312 is inserted into the latch hole 702, the grasping part grasps the grasped part. Since the grasped part is arranged on the material tray 700, the grasping part can be moved while the material tray 700 is driven to move synchronously through the docking and cooperation between the grasping part and the grasped part. When the grasping part and the grasped part are separated, the material tray 700 is not affected by the driving of the grasping part. In addition to the design structure of the latch and the latch hole listed in this embodiment, the grasping part can also be an electromagnetic clamp (such as a suction cup electromagnet), and the grasped part is a component composed of a magnetic material (such as iron).

[0062] like Figure 8 , 9As shown, the lower part of the latch 312 is also connected to a tray support part 322, and the tray support part 322 extends horizontally. In this embodiment, the tray support part 322 is in the shape of a plate, and the latch driving component 311 is a cylinder, the piston rod of the cylinder extends longitudinally, and the front end of the piston rod of the cylinder is connected to the rear lower end of the tray support part 322; and the latch 312 is connected to the front upper end of the tray support part 322 (as shown in FIG. Fig. 9 As shown in the figure, the latch 312 and the latch driving component 311 are staggered in front and back, that is, the latch 312 is not located directly above the latch driving component 311. With the above structure, when the latch 312 moves from the rear side of the material box frame 211 to the bottom of the material tray 700 and is located below the latch hole 702, the latch driving component 311 can still be located at the rear side of the material tray 700. At the same time, with the above structure, when the latch 312 is aligned with the latch hole 702 and inserted into the latch hole 702 from bottom to top, the upper end surface of the material tray top supporting part 322 can be attached to the lower end surface of the material tray 700, thereby forming support for the material tray 700.

[0063] In this embodiment, the push drive component 310 is a linear servo motor, and the latch drive component 311 is connected to the front end of the push drive component 310. Driven by the push drive component 310, the latch drive component 311 can move back and forth, and the latch 312 is connected to the front end of the moving end (i.e., the piston rod) of the latch drive component 311 through the tray support 322, thereby achieving the purpose of the push drive component 310 driving the latch 312 to move back and forth. At the same time, driven by the latch drive component 311, the latch 312 can move up and down. During operation, the push drive component 1 310 drives the latch drive component 311, the tray support 322 and the latch 312 to move forward as a whole, enter the material box frame 211 from the rear end opening of the material box frame 211, and move to the bottom of the material tray 700. When the upper end of the latch 312 is directly opposite to the bottom of the latch hole 702, the latch drive component 311 is started to push the latch 312 upward and insert it into the latch hole 702. Then, the push drive component 1 310 drives the latch drive component 311, the tray support 322 and the latch 312 to move backward as a whole until the rear end of the material tray 700 abuts against the front end of the movable limit block 321 and stops.

[0064] like Figure 7-8As shown, in this embodiment, the bracket component 2 includes a left bracket 2 315 and a right bracket 2 316, both of which are long strips extending forward and backward; the upper end surface of the left bracket 2 315 and the upper end surface of the right bracket 2 316 are at the same height, and the push drive component 1 310 is located between the left bracket 2 315 and the right bracket 2 316. At the same time, the left bracket 2 315 is fixed to the right end of the left fixed block 313, and the left bracket 2 315 is fixedly connected to the upper end of the workbench 1, and the upper end of the left bracket 2 315 is lower than the upper end of the left fixed block 313, that is, the part of the left fixed block 313 that is higher than the upper end surface of the left bracket 2 315 forms the left limit end of the material tray. Correspondingly, the right bracket 316 is fixed to the left end of the right fixed block 314, and the right fixed block 314 is fixedly connected to the upper end of the workbench 1, and the upper end of the right bracket 316 is lower than the upper end of the right fixed block 314, that is, the part of the right fixed block 314 that is higher than the upper end surface of the right bracket 316 forms the right limit end of the material tray.

[0065] When the material tray 700 is located at the upper end of the left bracket 2 315 and the right bracket 2 316, the left and right ends of the material tray 700 are limited between the left limit end of the material tray and the right limit end of the material tray, and cannot move left and right. The left limit end of the material tray and the right limit end of the material tray play a role in preventing the material tray 700 from moving left and right. At the same time, the left bracket 2 315 and the right bracket 2 316 extend forward and backward, and the front end of the left bracket 2 315 and the front end of the right bracket 2 316 are both close to the rear side of the material box frame 211. When the material tray 700 is dragged out of the material box frame 211, it can be quickly and timely moved to the upper end of the left bracket 2 315 and the right bracket 2 316.

[0066] At the same time, a movable limit block 321 is provided between the left bracket 315 and the right bracket 316 to prevent the material tray 700 located at the upper ends of the left bracket 315 and the right bracket 316 from continuing to move backward. When the rear end of the material tray 700 is in contact with the front end of the movable limit block 321, the material tray 700 stops moving.

[0067] At the same time, when the material tray 700 stops moving, in order to further lock the position of the material tray 700 and prevent the material tray 700 from shaking or shifting in subsequent operations, we also set a top pressure piece and an upper and lower cylinder that drives the top pressure piece to move up and down, and the top pressure piece is located above the bracket component 2. In this embodiment, the top pressure piece includes a left top pressure piece 319 and a right top pressure piece 320, and the upper and lower cylinders include a left upper and lower cylinder 317 that drives the left top pressure piece 319 to move up and down and a right top pressure piece 320 that drives the right top pressure piece 320 to move up and down. Figure 8As shown, the left pressing member 319 moves up and down driven by the left up and down cylinder 317, and can press the upper left end of the material tray 700 from top to bottom; and the right pressing member 320 moves up and down driven by the right up and down cylinder 318, and can press the upper right end of the material tray 700 from top to bottom. When the material tray 700 stops moving, the left pressing member 319 and the right pressing member 320 press down at the same time, and the material tray 700 can be pressed tightly between the pressing member and the bracket component 2, and the position of the material tray 700 located at the upper end of the bracket component 2 is further locked.

[0068] The material transfer mechanism 4 is used to grab parts and drive the parts to move between different mechanisms, including a material grabbing and unloading component and a moving drive component that drives the material grabbing and unloading component to move above the hook plate mechanism, the height detection mechanism and the defective product collection mechanism.

[0069] In this embodiment, the mobile drive assembly includes a linear drive component 1 410 that drives the material grabbing and unloading assembly to move horizontally left and right, and a linear drive component 2 420 that drives the linear drive component 1 410 to move forward and backward. In this embodiment, the linear drive component 1 410 and the linear drive component 2 420 are both linear guides.

[0070] The material grabbing and unloading assembly includes a connecting plate 1 431, a push driving component 2 432, a connecting plate 2 433 and a material grabbing claw cylinder for grabbing parts.

[0071] like Fig.12 As shown, in this embodiment, the push drive component 432 is a slide cylinder. The push drive component 432 is connected to the connecting plate 431, and the connecting plate 433 is connected to the moving end of the push drive component 432 (i.e., the slider of the slide cylinder), and the material grabbing claw cylinder is connected to the connecting plate 433, and the connecting plate 431 is connected to the linear drive component 410. Driven by the linear drive component 410, the connecting plate 431 can move left and right, thereby driving the grabbing and unloading assembly as a whole to move left and right. The left end of the linear drive component 410 is connected to the moving end of the linear drive component 420, and the lower right end of the linear drive component 410 is provided with a groove slider 841, which is slidably connected to the slide rail 840. Driven by the linear drive component 420, the linear drive component 410 can move back and forth in the front and back directions, thereby realizing that the grabbing and unloading assembly as a whole is driven to move forward and backward.

[0072] Driven by the linear drive component 1 410 and the linear drive component 2 420 , the material grabbing and unloading assembly can move in the front-to-back and left-to-right directions.

[0073] In this embodiment, the material grabbing claw cylinder includes a loading claw cylinder 434 and a unloading claw cylinder 435, and the claws of the loading claw cylinder 434 and the unloading claw cylinder 435 are both facing downward. The loading claw cylinder 434 can realize the loading operation of grabbing the parts to be tested from the material tray 700 and placing them in the detection position 505; the unloading claw cylinder 435 can realize the unloading operation of grabbing the tested parts in the detection position 505 after detection and removing them from the detection position 505.

[0074] like Figure 1 , 2 As shown in Figures 3 and 12, in this embodiment, the material moving mechanism 4 is supported above the hook plate mechanism 3, the height detection mechanism 5 and the defective product collecting mechanism 6 through a support frame; the support frame includes a left support frame 810 and a right support frame 820 distributed on the left and right; the linear drive component 420 is fixedly connected to the upper end of the left support frame 810; the lower end of the linear drive component 410 is connected to the upper end of the right support frame 820 in a front-to-back sliding manner. In this embodiment, this front-to-back sliding connection is achieved by the sliding cooperation between the groove slider 841 arranged at the lower end of the linear drive component 410 and the slide rail 840 arranged at the upper end of the right support frame 820.

[0075] like Figure 8 As shown, the height detection mechanism 5 in this embodiment includes a displacement sensor 500, a detection platform 503, and a push drive component 3 504 that drives the detection platform 503 to move back and forth horizontally; the displacement sensor 500 is located above the detection platform 503; in this embodiment, the push drive component 3 504 is a cylinder. The push drive component 3 504 is connected to the upper end of the workbench 1 through the support block 501, and the displacement sensor 500 is connected to the upper end of the detection platform 503 through the connecting frame 502, and the lower end of the connecting frame 502 is fixedly connected to the support block 501.

[0076] Driven by the push drive component 3 504, the test platform 503 can move back and forth. Before the loading operation, the test platform 503 moves backward to make the space above the detection position 505 vacant (at this time, the displacement sensor 500 is not located directly above the detection position 505), and then the loading clamping claw cylinder 434 moves to the detection position 505, and the part to be tested is placed on the detection position 505; after that, the test platform 503 moves so that the part to be tested in the detection position 505 is located directly below the displacement sensor 500, and the displacement sensor 500 performs a height detection on the part to be tested located on the detection position 505; when the detection is completed, the part to be tested becomes a tested part, and the test platform 503 resets and moves again, so that the space above the tested part in the detection position 505 is vacant, and then the unloading clamping claw cylinder 435 takes away the tested part.

[0077] Due to the presence of the push drive component 504, the detection table 503 can be moved back and forth horizontally, and then the detection position 505 can be moved horizontally. After the detection position 505 moves away from directly below the displacement sensor 500, the space directly above the detection position 505 is vacated, leaving more space for the grabbing claw cylinder to perform loading and unloading operations.

[0078] Of course, in addition to the above scheme, we can also choose to adopt a scheme in which the detection platform 503 is stationary and the displacement sensor 500 moves horizontally. For example, the displacement sensor 500 is driven by the push drive component 3 to move horizontally forward and backward, while the detection platform 503 is fixed; when the displacement sensor 500 moves forward, the displacement sensor 500 moves away from the top of the detection platform 503, so that the space directly above the detection position 505 is vacant. On the contrary, when the displacement sensor 500 moves backward to the top of the detection position 505, the displacement sensor 500 can be aligned with the part to be detected located at the detection position 505 to perform a height detection operation.

[0079] At the same time, if Figure 2 , 3 As shown, in this embodiment, the hook plate mechanism 3, the height detection mechanism 5 and the unqualified product collection mechanism 6 are all located between the left support frame 810 and the right support frame 820. The unqualified product collection mechanism 6 is used to place unqualified parts after detection, and a structure of a slide table plus a regular box can be used. For example, after the unloading clamping claw cylinder 435 places the unqualified parts on the slide table, the unqualified parts roll along the slide table into the regular box.

[0080] However, since the unqualified parts will collide during the rolling process, not only will a collision sound be emitted, but also the unqualified parts will be damaged during the collision. For this reason, in this embodiment, the unqualified product collection mechanism 6 uses a belt conveyor design (such as Figure 1 As shown in the figure). Belt conveyor, also known as rubber belt conveyor, is mainly composed of two end rollers and a closed conveyor belt tightly mounted on them. It is a friction-driven machine that transports materials in a continuous manner. The roller that drives the conveyor belt to rotate is called the drive roller; the other roller that only changes the direction of movement of the conveyor belt is called the redirection roller. The drive roller is driven by an electric motor through a reducer, and the conveyor belt is dragged by the friction between the drive roller and the conveyor belt.

[0081] In this embodiment, we also set two sensors on the side of the conveyor belt 600, namely the front sensor and the rear sensor. The front sensor and the rear sensor are successively distributed along the conveying direction of the conveyor belt 600 (i.e., the direction in which the conveyor belt drives the tested unqualified parts to move), and the front sensor and the rear sensor will not move with the movement of the conveyor belt 600. In this embodiment, the conveyor belt 600 drives the tested unqualified parts to move from front to back, and the front sensor is located in front of the rear sensor; and the belt conveyor, the front sensor and the rear sensor are all connected to the PLC control system.

[0082] When the conveyor belt 600 stops moving, the first detected unqualified part is first placed in front of the upper end surface of the conveyor belt 600, located on one side of the front-end sensor; then, after the front-end sensor senses the first detected unqualified part, the conveyor belt 600 drives the first detected unqualified part to move backward for a distance, and when the front-end sensor can no longer sense the first detected unqualified part, the conveyor belt 600 stops moving. At this time, the front space of the first detected unqualified part is vacated and can be used to place the second detected unqualified part. When the second detected unqualified part is placed in the front of the upper end surface of the conveyor belt 600, the conveyor belt 600 again drives the first detected unqualified part and the second detected unqualified part to move backward, and when the front-end sensor can no longer sense the second detected unqualified part, the conveyor belt 600 stops moving, and the front space of the second detected unqualified part is vacated again and can be used to place the third detected unqualified part, and so on. The conveyor belt 600 drives the unqualified parts to move backward step by step. When the first unqualified part moves to the side of the rear sensor at the rear of the upper end surface of the conveyor belt 600, it will be sensed by the rear sensor at the rear. At this time, since the rear sensor is connected to the PLC control system, the PLC control system can issue an alarm to warn the operator to promptly remove the unqualified parts on the conveyor belt 600. Or after the rear sensor senses the unqualified parts, the PLC control system issues an alarm and suspends the operation of the height detection device, and stops placing the unqualified parts on the conveyor belt 600. After the height detection device is suspended, the operator removes the unqualified parts.

[0083] Preferably, in this embodiment, the material tray 700 used is provided with a plurality of part limiting grooves 701 , and during operation, the lower part of the part to be tested is placed in the part limiting grooves 701 .

[0084] The method and operation steps for performing part height detection using the part height detection device in this embodiment are as follows:

[0085] Step 1: Place several trays 700 filled with parts to be tested into the material box frame 211, and after the trays 700 are placed on the upper end of the bracket component 1, the latch holes 702 are located at the rear of the trays 700; place one tray 700 on one layer of the bracket component 1.

[0086] Step 2: a tray 700 filled with parts to be tested is located in front of the hooking tray mechanism 3, and the upper end surface of the bracket component 1 used to support the tray 700 is at the same height as the upper end surface of the bracket component 2. At this time, the tray 700 filled with parts to be tested is located at a specified height.

[0087] Step 3, the material box frame 211 does not move; driven by the push drive component 1 310, the latch drive component 311 and the latch 312 move forward as a whole, and the latch 312 stops moving after aligning with the latch hole 702; then, driven by the latch drive component 311 (i.e. the grabbing drive component), the latch 312 (i.e. the grabbing part) is inserted into the latch hole 702 (i.e. the grabbed part); driven by the push drive component 1 310, the latch drive component 311 and the latch 312 move backward as a whole, and the material tray 700 located at the front side of the hook plate mechanism 3 and filled with parts to be tested is dragged out of the material box frame 211; after being completely dragged out of the material box frame 211, the material tray 700 filled with parts to be tested is placed on the upper end of the bracket component 2 (left bracket 2 315 and right bracket 2 316). When the rear end of the material tray 700 abuts against the movable limit block 321, the material tray 700 stops moving.

[0088] Through the above step three, the purpose of grabbing the material tray in the material box frame 211 and dragging it out of the material box frame 211 as a whole is achieved.

[0089] Step 4, the material tray 700 being dragged out does not move; the material grabbing and unloading assembly grabs the parts to be tested in the material tray 700 placed at the upper end of the bracket component 2 and moves to above the detection position 505, and then places the parts to be tested into the detection position 505.

[0090] Step 5: Move the detection platform 503 so that the displacement sensor 500 is located directly above the detection position 505; then, the displacement sensor 500 performs a height detection operation on the part to be detected in the detection position; after the height detection operation is completed, the part to be detected becomes a detected part.

[0091] Step 6: The testing platform 503 is reset and moved to free up the space above the tested part in the testing position 505.

[0092] Step seven, then, if the height of the measured part is qualified (the measured part is a qualified part at this time), the grabbing and unloading assembly grabs the qualified part in the detection position 505 and moves it to above the material tray 700 at the upper end of the bracket component 2, and then puts the qualified part back into the material tray 700 at the upper end of the bracket component 2.

[0093] If the height of the measured part is unqualified (the measured part is an unqualified part at this time), the grabbing and unloading assembly grabs the unqualified part in the detection position 505 and moves it above the unqualified product collection mechanism, and places it on the conveyor belt 600 in the unqualified product collection mechanism 6.

[0094] Step 8. Repeat steps 4 to 7 above until all parts to be tested in the tray 700 at the upper end of the bracket component 2 (i.e., the tray 700 dragged out of the material box frame 211) have completed the inspection operation, and all qualified parts have been transferred back to the tray 700 at the upper end of the bracket component 2.

[0095] Step nine, the latch 312 moves forward again, pushing the tray 700 containing the tested qualified parts located at the upper end of the bracket component 2 back to the upper end of the original bracket component 1 in the material box frame 211, and then the latch 312 exits the latch hole 702 and moves backward to reset.

[0096] Step 10: Move the material box frame 211 longitudinally; repeat steps 2 to 9.

[0097] Step 11: After all parts to be tested have completed the testing operation and all trays have been dragged out of the material box frame 211 and then pushed back into the material box frame 211, the equipment stops running and the operator takes out all trays 700 containing qualified parts in the material box frame 211.

[0098] In this embodiment, during the above operation, after a number of trays 700 filled with parts to be tested are placed in the material box frame 211, they are stacked up and down, and there is a gap between two adjacent trays 700; a tray 700 is placed on the upper end of each layer of the bracket component, and the trays 700 in the material box frame 211 are aligned up and down (such as Figure 1 As shown). During operation, we choose to drag out the trays 700 filled with parts to be tested in the material box frame 211 in order from bottom to top, that is, first drag out the tray 700 filled with parts to be tested at the bottom out of the material box frame 211, and finally drag out the tray 700 filled with parts to be tested at the top out of the material box frame 211. To this end, at the initial start-up of the equipment, after step 1, we first make the upper end surface of the bracket component 1 used to support the lowermost tray 700 and the upper end surface of the bracket component 2 at the same height, and in subsequent operations, the material box frame 211 moves downward.

[0099] Of course, we can also add a tray sensor 214 on the left and / or right side of the material box frame 211 at the upper end of the workbench 1, and the tray sensor 214 is located on the side of the through hole 200 and facing the direction of the through hole 220. When the upper end surface of one layer of the bracket component 1 is at the same height as the upper end surface of the bracket component 2, the side end of the tray located at the upper end of the bracket component 1 of this layer will be located on the side of the tray sensor 214 and be sensed by the tray sensor 214.

[0100] In this embodiment, the material tray sensor 214 is located on the left side of the material box frame 211. Figure 1 As shown. During the operation, after step 2 and before step 3, the material box frame 211 remains stationary, and we can start the tray sensor 214 at the same time. If the tray sensor 214 senses an object, it means that there is a tray on the right side of the tray sensor 214, and then continue the subsequent operation steps of dragging the tray out of the material box frame 211; if the tray sensor 214 does not sense an object, it means that there is no tray on the right side of the tray sensor 214, and there may be a situation where the operator does not place a tray on the upper end of the bracket component 1 of the corresponding layer. When the tray sensor 214 does not sense an object, the PLC control system can adjust the operation at this time, so that the material box frame 211 continues to move longitudinally, driving the bracket component of the adjacent layer to move down and then stop, and after the tray sensor 214 senses an object, start the subsequent operation steps of dragging the tray out of the material box frame 211. In this way, the tray sensor 214 can be used to check whether there is a tray at a specified height after the material box frame 211 stops moving.

[0101] When all the material trays 700 are back in the material box frame 211 , it means that all the parts to be tested have completed the height detection operation, and all the tested qualified parts are located in the material box frame 211 .

[0102] The operation mode of the material grabbing and unloading assembly is as follows: the push-driving component 432 can drive the loading clamp cylinder 434 and the unloading clamp cylinder 435 to move up and down synchronously; in the operation of grabbing parts, the push-driving component 432 drives the loading clamp cylinder 434 and the unloading clamp cylinder 435 to move downward synchronously, and then the loading clamp cylinder 434 or the unloading clamp cylinder 435 is started, and the loading clamp cylinder 434 or the unloading clamp cylinder 435 can retract the clamp to grab the parts located below it; after the parts are grabbed, the loading clamp cylinder 434 and the unloading clamp cylinder 435 are reset and move upward synchronously. Correspondingly, in the operation of unloading parts, the push-drive component 432 drives the loading clamp cylinder 434 and the unloading clamp cylinder 435 to move downward synchronously, and then the clamping jaws of the loading clamp cylinder 434 or the clamping jaws of the unloading clamp cylinder 435 are reset and opened to unload the parts; after the parts are unloaded, the loading clamp cylinder 434 and the unloading clamp cylinder 435 are reset and moved upward synchronously.

[0103] Driven by the linear drive component 1 410 and the linear drive component 2 420 , the material grabbing and unloading assembly can move in the left and right and front and back directions as a whole, thereby realizing movement between above the bracket component 2, above the detection table 503 and above the conveyor belt 600 .

[0104] In this embodiment, when the latch 312 is at the lowest point (i.e., the latch driving component 311 is a cylinder, and the piston rod of the cylinder moves down to the lowest point), the upper end surface of the latch 312 is lower than the upper end surface of the bracket component 2. For this reason, when the upper end surface of a layer of bracket component 1 and the upper end surface of bracket component 2 are at the same height, the upper end surface of the latch 312 is also lower than the upper end surface of the bracket component 1, and the latch 312 can move forward to the bottom of the material tray 700 located at the upper end of the layer of bracket component 1, and is located below the latch hole 702. Then, under the drive of the latch driving component 311, the latch 312 will be inserted into the latch hole 702 from bottom to top, and the material tray top support part 322 can support the lower end of the material tray at the bottom. In the subsequent process of the material tray being dragged backward out of the material box frame 211, due to the support and support of the material tray top support part 322, the possibility of the front of the material tray tilting downward can be reduced.

[0105] In this embodiment, it also includes a plurality of indicator lights 830 (such as Fig.12 ); The number of indicator lights 830 is the same as the number of layers of the bracket component one, and each indicator light 830 corresponds to a different layer of the bracket component one.

[0106] When the material tray 700 with the tested qualified parts is pushed back to the upper end of the original bracket component 1 in the material box frame 211, the indicator light 830 corresponding to the bracket component 1 is lit. For example, if the material tray at the upper end of the bracket component 2 is dragged out from the upper end of the top bracket component 1 in the material box frame 211, then in step nine, the material tray at the upper end of the bracket component 2 will be pushed back to the upper end of the top bracket component 1 again under the drive of the latch 312; then the indicator light 830 corresponding to the top bracket component 1 will be lit after the material tray is reset and moved back to the upper end of the top bracket component 1 in the material box frame 211. Therefore, the operator can quickly and intuitively understand the progress of the detection operation by observing the status of the indicator light.

[0107] At the same time, in order to improve efficiency, we can also choose to reset the material grabbing and unloading assembly to the top of the hook plate mechanism 3 immediately after the last part to be tested is placed in the detection position 505, and the next part to be tested is grabbed by the loading clamping claw cylinder 434, and then the material grabbing and unloading assembly moves to the top of the detection position 505 after step 6 and before step 7. In addition, in step 7, the unloading clamping claw cylinder 435 first moves the tested part out of the detection position 505, and then the loading clamping claw cylinder 434 moves to the top of the vacated detection position 505, and the loading clamping claw cylinder 434 quickly moves the next part to be tested to the detection position 505, thereby reducing the idle waiting time of the displacement sensor 500.

[0108] In this embodiment, the material box driving component 210, the push driving component 1 310, the latch driving component 311, the left upper and lower cylinder 317, the right upper and lower cylinder 318, the linear driving component 1 410, the linear driving component 2 420, the push driving component 2 432, the material loading clamping claw cylinder 434, the material unloading clamping claw cylinder 435, the displacement sensor 500, the push driving component 3 504, and the conveyor belt driving component are all connected to the PLC system, so that the operation coordination and automatic operation between the various mechanisms can be realized.

Claims

1. A part height detection device, characterized in that: It includes a workbench, one side of which is provided with a material box mechanism; the upper end of the workbench is provided with a hook plate mechanism, a height detection mechanism and a defective product collection mechanism for placing the defective parts that have been tested; a material transfer mechanism is also provided above the hook plate mechanism, the height detection mechanism and the defective product collection mechanism; the material box mechanism, the hook plate mechanism, the height detection mechanism and the material transfer mechanism are all connected to a PLC control system; The material box mechanism includes a plurality of material trays for placing the parts to be tested, a material box frame, and a material box driving component for driving the material box frame to move up and down; The material box frame is provided with a plurality of bracket components for supporting the material tray, which are distributed up and down; the material tray is also provided with a grasping portion; and the material tray inlet and outlet are provided at one end of the material box frame facing the hooking tray mechanism; The hook plate mechanism is located at the rear side of the material box frame, and includes a grabbing part, a grabbing driving component for driving the grabbing part to grab the grabbed part, a push driving component 1 for driving the grabbing part to move back and forth, and a bracket component 2 for holding the material tray; The material transfer mechanism includes a material grabbing and unloading assembly and a moving drive assembly that drives the material grabbing and unloading assembly to move above the hook plate mechanism, the height detection mechanism and the unqualified product collecting mechanism; The material grabbing and unloading assembly includes a material grabbing claw cylinder and a push driving component 2 for driving the material grabbing claw cylinder to move up and down and back and forth; The height detection mechanism includes a detection platform and a displacement sensor located above the detection platform; a detection position is arranged on the detection platform; the height detection mechanism also includes a push drive component three for driving the detection platform or the displacement sensor to move back and forth horizontally.

2. A part height detection device according to claim 1, characterized in that: The moving end of the push driving component 2 is connected to the material grabbing claw cylinder through the connecting plate 2; the material grabbing claw cylinder includes a loading claw cylinder and a unloading claw cylinder.

3. A part height detection device according to claim 2, characterized in that: The bracket component 2 includes a left bracket 2 and a right bracket 2 distributed on the left and right sides; it also includes a left limit end of the material tray and a right limit end of the material tray, and the bracket component 2 is located between the left limit end of the material tray and the right limit end of the material tray.

4. A part height detection device according to claim 3, characterized in that: It also includes several indicator lights connected to the PLC control system.

5. A part height detection device according to claim 4, characterized in that: The material tray is also provided with part limiting grooves.

6. A part height detection device according to any one of claims 1 to 5, characterized in that: The mechanism for collecting defective products is a belt conveyor; a front-end sensor and a rear-end sensor are also provided on one side of the belt conveyor, and the front-end sensor and the rear-end sensor are distributed in sequence along the conveying direction of the belt conveyor; the belt conveyor, the front-end sensor and the rear-end sensor are all connected to the PLC control system.

7. A part height detection device according to claim 6, characterized in that: The mobile driving component includes a linear driving component 1 that drives the material grabbing and unloading component to move horizontally left and right, and a linear driving component 2 that drives the linear driving component 1 to move forward and backward; the push driving component 2 is connected to the linear driving component 1; The material moving mechanism is supported above the hook plate mechanism and the height detection mechanism through a support frame; the support frame includes a left support frame and a right support frame distributed on the left and right; the linear drive component 2 is fixedly connected to the left support frame, and the linear drive component 1 is slidably connected to the right support frame forward and backward.

8. A part height detection device according to claim 7, characterized in that: It also includes a pressing piece and upper and lower cylinders for driving the pressing piece to move up and down; the pressing piece is located above the bracket component 2.

9. A part height detection device according to claim 8, characterized in that: The grasped portion is a pin hole that penetrates vertically; the grasping portion is a pin that extends longitudinally and is used to be inserted into the pin hole.

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