Pin selecting machine

Abstract

The utility model discloses a pin selecting machine, which belongs to the technical field of length detection, and comprises a working table, and a feeding mechanism, a carrying mechanism, a detection mechanism and a discharging mechanism which are sequentially arranged on the working table, pins are fed by a feeding machine hook, then are moved to the detection mechanism by the carrying mechanism, and are subjected to length detection; and after detection, qualified workpieces and unqualified workpieces are separately placed by the discharging mechanism. According to the device, full-automatic operation of pin feeding, length detection and separated discharging can be carried out, labor consumption is reduced, and the detection accuracy and the detection efficiency are improved.

Description

Technical Field

[0001] This utility model belongs to the field of length detection technology, specifically relating to a pin sorting machine. Background Technology

[0002] A pin is a common mechanical component, primarily used to connect or secure mechanical parts. It is typically cylindrical, but can also be conical, pointed, or made of wood or metal. It is used to fasten or secure items such as planks, tiles, shoe soles, shoe uppers, furniture molds and components, or to fill holes. Pins play a crucial role in connecting mechanical components and can be categorized into cotter pins, tapered pins, cylindrical pins, and slotted pins based on their shape and function. The main function of a pin is to connect mechanical parts through its insertion and securing action. In mechanical equipment, accurate and secure connections between various components are required to ensure the normal operation of the equipment. Pins are widely used in various mechanical equipment, such as automobiles, machine tools, and ships, where they connect various components, such as bearings, gears, and connecting rods, to ensure the normal operation of the equipment.

[0003] The accuracy of the pin's length will affect the following aspects:

[0004] 1. Positioning Accuracy: Pins, as positioning components, are used to determine the relative positions of parts. Tapered pins have a 1:50 taper, reliable self-locking properties, and can be installed and removed multiple times in the same pin hole without affecting the relative positional accuracy of the connected parts. Therefore, the length of the pin directly affects the positioning accuracy.

[0005] 2. Connection Strength: The length of the pin affects its ability to withstand loads in the connection. Insufficient pin length may result in insufficient connection strength, while excessive length may lead to installation difficulties or interference with other components.

[0006] 3. Assembly Requirements: In automated mechanical assembly, the length of the pins determines their correct guiding and positioning. Pins serve as both positioning and guiding elements, and have different lengths so that they engage sequentially rather than simultaneously. This requires precise pin lengths to ensure smooth assembly.

[0007] 4. Installation Device: The pin acts as an overload shearing component in the safety device, and the accuracy of its length directly affects safety performance. If the pin length is incorrect, it may not break properly under overload, thus affecting the safety protection function.

[0008] 5. Standardization and Interchangeability: As a standard part, the standardization of the length of a pin is crucial for the interchangeability and maintenance of parts. The ISO 8734 standard states that the length and diameter of cylindrical pins are specified according to the international standard ISO 4503 to ensure the standardization and interchangeability of pins.

[0009] 6. Quality Control: Length measurement technology is fundamental to ensuring consistent units of measurement and accurate values, and is crucial for product quality inspection. Accurate pin length measurement helps control product quality and ensures the reliability and durability of mechanical components.

[0010] Therefore, measuring the length of the pin is crucial in quality inspection, but currently, the measurement of the pin length is mostly done manually, which is inaccurate and consumes a lot of manpower. Utility Model Content

[0011] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a pin sorting machine.

[0012] This utility model provides the following technical solution:

[0013] A pin sorting machine includes a worktable and a feeding mechanism, a conveying mechanism, a detection mechanism and a discharging mechanism installed sequentially on the worktable. The pins are fed by the feeding mechanism, and then the conveying mechanism moves the pins to the detection mechanism for length detection. After detection, the discharging mechanism separates qualified and unqualified workpieces.

[0014] Specifically, the feeding mechanism includes a direct vibration channel and a hopper that is mounted on the worktable via a lifting mechanism.

[0015] Specifically, the lifting mechanism includes a cylinder mounting base, the cylinder is mounted on the inner wall of the worktable via the cylinder mounting base, the slide rail is mounted on the worktable via the mounting base, and the hopper is mounted on the slide rail and the cylinder.

[0016] Specifically, the lifting mechanism is also equipped with a detection component, which includes a mounting bracket installed on the mounting base. The mounting bracket is equipped with photoelectric sensor 2 and photoelectric sensor 1. Photoelectric sensor 2 is used to locate the position of the hopper, and photoelectric sensor 1 is used to locate the position of the tooling.

[0017] Specifically, the handling mechanism includes a support frame, a material handling cylinder mounted on the support frame via a linear guide rail, a mounting plate mounted on the material handling cylinder, and finger-grip cylinders mounted at both ends of the mounting plate.

[0018] Specifically, buffer blocks are installed at both ends of the linear guide rail on the bracket.

[0019] Specifically, the testing mechanism includes a fixed base, a second linear guide rail mounted on the fixed base, a fixture fixedly mounted at the middle position of the second linear guide rail, and the distance between the hopper's material pick-up point and the fixture is equal to the distance between the two finger-clamping cylinders. Two movable blocks are movably mounted at both ends of the second linear guide rail via sliders. A reference block is mounted on one movable block, and a Keyence measuring pen is mounted on the other movable block. The movable block of the reference block is movably mounted on the fixed base via a movable cylinder. A stop block is mounted on the movable block of the Keyence measuring pen. The front and rear cylinders of the measuring pen abut against the stop block. The front and rear cylinders of the measuring pen are mounted on the fixed base, and a rotary clamping cylinder is mounted on the fixed base to fix the workpiece placed on the fixture.

[0020] Specifically, a connecting block is installed on the end face of the fixed base near the Keyence probe, and the moving block of the Keyence probe is elastically connected to the connecting block through a guide post and a spring.

[0021] Specifically, the unloading mechanism includes a slide cylinder mounted on the worktable via a cylinder mounting base. A guide rail is installed at an angle on the slide cylinder. Qualified workpiece placement boxes and unqualified workpiece placement boxes are located on both sides of the guide rail. Both qualified and unqualified workpiece placement boxes are mounted on the worktable. The conveying mechanism can directly transport the workpiece into the qualified workpiece placement box. After the slide cylinder is activated, when the conveying mechanism transports the workpiece, the workpiece can fall onto the unqualified workpiece placement box along the guide rail.

[0022] Specifically, the distance between the entrance of the qualified workpiece placement box and the tooling is equal to the distance between the two finger-grip cylinders, while the shortest distance between the guide rail and the tooling is less than or equal to the distance between the two finger-grip cylinders.

[0023] The beneficial effects of this utility model are:

[0024] This device can perform fully automated operations such as pin feeding, length detection, and segmented discharge, saving labor costs and improving detection accuracy and efficiency. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a three-dimensional drawing of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the feeding mechanism in this utility model;

[0029] Figure 4 This is a schematic diagram of the lifting mechanism in this utility model;

[0030] Figure 5 This is a schematic diagram of the conveying mechanism in this utility model;

[0031] Figure 6 This is a three-dimensional diagram of the testing mechanism in this utility model;

[0032] Figure 7 This is a schematic diagram of the detection mechanism in this utility model;

[0033] Figure 8 This is a schematic diagram of the material discharge mechanism in this utility model.

[0034] The diagram is labeled as follows: 1. Workbench; 2. Feeding mechanism; 3. Handling mechanism; 4. Inspection mechanism; 5. Discharge mechanism.

[0035] 201. Vibrating channel; 202. Hopper; 203. Lifting mechanism; 204. Cylinder mounting base; 205. Cylinder; 206. Mounting base; 207. Slide rail; 208. Mounting bracket; 209. Photoelectric sensor one; 210. Photoelectric sensor two;

[0036] 301. Bracket; 302. Linear guide rail 1; 303. Left and right handling cylinders; 304. Buffer block; 305. Material handling cylinders; 306. Mounting plate; 307. Finger clamp cylinder;

[0037] 401. Keyence probe; 402. Mounting base; 403. Linear guide rail II; 404. Moving cylinder; 405. Rotary clamping cylinder; 406. Reference block; 407. Moving block; 408. Front and rear cylinders of the probe; 409. Guide post; 410. Spring. Detailed Implementation

[0038] like Figure 1-2 As shown, this utility model provides a pin sorting machine, including a workbench 1, a feeding mechanism 2, a conveying mechanism 3, a detection mechanism 4 and a discharging mechanism 5 installed sequentially on the workbench 1. The pins are fed by the hook 2 of the feeding machine, and then the conveying mechanism 3 moves the pins to the detection mechanism 4 for length detection. After detection, the discharging mechanism 5 separates qualified and unqualified workpieces.

[0039] Please refer to this carefully. Figure 3 The feeding mechanism 2 includes a direct vibration channel 201 and a hopper 202 movably mounted on the worktable 1 via a lifting mechanism 203. The lifting mechanism 203 moves the hopper 202 to a designated position, thereby facilitating the handling mechanism 3 to remove the pin from the hopper 202 and move it to the detection mechanism 4.

[0040] Specifically, the lifting mechanism 203 includes a cylinder mounting base 204, a cylinder 205 mounted on the inner wall of the worktable 1 via the cylinder mounting base 204, a slide rail 207 mounted on the worktable 1 via a mounting base 206, and a hopper 202 mounted on the slide rail 207 and the cylinder 205. Thus, when the cylinder 205 is activated, it can drive the hopper 202 to move up and down along the slide rail 207.

[0041] For further details, please refer to the following: Figure 4 The lifting mechanism 203 is also equipped with a detection component, which is used to position the hopper 202 so that the hopper 202 is aligned with the tooling on the detection component 3, thereby facilitating the handling mechanism 3 to remove the pin from the hopper 202 and move it accurately to the tooling.

[0042] The detection assembly includes a mounting bracket 208 mounted on a mounting base 206. A second photoelectric sensor 210 and a first photoelectric sensor 209 are mounted on the mounting bracket 208. The second photoelectric sensor 210 is used to locate the position of the hopper 202, and the first photoelectric sensor 209 is used to locate the position of the tooling, thereby aligning the hopper 202 with the tooling.

[0043] Please refer to this carefully. Figure 5 The conveying mechanism 3 includes a bracket 301, a material picking up and down cylinder 305 mounted on the bracket 301 in cooperation with the conveying left and right cylinders 303 via a linear guide rail 302, and a mounting plate 306 mounted on the material picking up and down cylinder 305. Finger clamp cylinders 307 are mounted at both ends of the mounting plate 306.

[0044] Furthermore, buffer blocks 304 are installed at both ends of the linear guide rail 302 on the bracket 301, which can prevent the material picking cylinder 305 from moving outside the linear guide rail 302, and at the same time prevent the material picking cylinder 305 from colliding with other components when it moves to the end position.

[0045] Please refer to this carefully. Figure 6-7The inspection mechanism 4 includes a fixed base 402, a linear guide rail 403 mounted on the fixed base 402, and a fixture fixedly mounted at the middle position of the linear guide rail 403. The distance between the material pick-up point of the hopper 202 and the fixture is equal to the distance between the two finger-clamp cylinders 307, so that the conveying mechanism 3 can perform material feeding and inspection conveying operations simultaneously. Two moving blocks 407 are movably mounted at both ends of the linear guide rail 403 via sliders. A reference block 406 is mounted on one moving block 407, and a Keyence measuring pen 401 is mounted on the other moving block 407. At the same time, the moving block 407 of the reference block 406 is movably mounted on the fixed base 402 via a moving cylinder 404. A stop block is mounted on the moving block 407 of the Keyence measuring pen 401. The front and rear cylinders 408 of the measuring pen abut against the stop block. The front and rear cylinders 408 of the measuring pen are mounted on the fixed base 402, and the rotary clamping cylinder 405 is mounted on the fixed base 402 to fix the workpiece placed on the fixture.

[0046] Furthermore, a connecting block is installed on the end face of the fixed base 402 near the Keyence probe 401. The moving block 407 of the Keyence probe 401 is elastically connected to the connecting block via a guide post 409 and a spring 410. The design of the guide post 409 and the spring 410 serves two purposes: firstly, to ensure the stable movement of the Keyence probe 401; and secondly, to counteract the reaction force when the Keyence probe 401 comes into contact with a workpiece, allowing the Keyence probe 401 to stabilize as quickly as possible.

[0047] First, the reference block 406 is moved to the reference position by the moving cylinder 404. At the same time, the front and rear cylinders 408 of the measuring pen push the Keyence measuring pen 401 away from the reference block 406 until the fixed stroke of the front and rear cylinders 408 is completed. Then, the conveying mechanism 3 transports the workpiece onto the fixture. The rotary clamping cylinder 405 is activated and presses the workpiece. Finally, the front and rear cylinders 408 of the measuring pen retract. Under the push of the spring 410, the Keyence measuring pen 401, together with the reference block 406, abuts against both ends of the workpiece. Thus, the length of the workpiece can be measured by the moving distance of the Keyence measuring pen 401 to determine whether it meets the requirements. According to the standard length, if the moving distance of the Keyence measuring pen 401 does not meet the moving distance calculated according to the standard length, whether it is too long or too short, it is a defective workpiece. If the moving distance of the Keyence measuring pen 401 meets the standard moving distance, the workpiece is a qualified workpiece.

[0048] Please refer to this carefully. Figure 8 The discharge mechanism 5 includes a slide cylinder 501 mounted on the worktable 1 via a cylinder mounting base. A guide rail 502 is inclinedly mounted on the slide cylinder 501. A qualified workpiece placement box 503 and an unqualified workpiece placement box 504 are located on both sides of the guide rail 502. Both the qualified workpiece placement box 503 and the unqualified workpiece placement box 504 are mounted on the worktable 1.

[0049] The distance between the entrance of the qualified workpiece placement box 503 and the tooling is equal to the distance between the two finger-grip cylinders 307. At the same time, the shortest distance between the guide rail 502 and the tooling is less than or equal to the distance between the two finger-grip cylinders 307. Thus, the conveying mechanism 3 can perform inspection, conveying and unloading operations simultaneously, improving work efficiency.

[0050] In the initial state, the position of the guide rail 502 will not interfere with the placement of qualified workpieces, so the conveying mechanism 3 can directly transport the workpieces to the qualified workpiece placement box 503. Therefore, after the inspection is completed, if the workpiece is judged to be a qualified workpiece, it will be directly transported to the qualified workpiece placement box 503 by the conveying mechanism 3. At this time, the workpiece clamped by the other end of the conveying mechanism 3 will be placed on the tooling of the inspection mechanism 4. If the workpiece is judged to be a defective workpiece, the slide cylinder 501 will be activated, and the slide cylinder 501 will push the guide rail 502 forward, so that when the conveying mechanism 3 transports the workpiece, the workpiece can fall onto the defective workpiece placement box 504 along the guide rail 502.

[0051] The control panel is communicatively coupled to the following components: direct vibration channel 201, cylinder 205, photoelectric sensor 1 209, photoelectric sensor 2 210, transport cylinder 303, material handling cylinder 305, finger clamp cylinder 307, rotary clamping cylinder 405, Keyence measuring pen 401, moving cylinder 404, measuring pen front and rear cylinder 408, and slide cylinder 501.

[0052] The control panel contains a PLC controller, which is a programmable numerical control system. The PLC acts as the central control system, realizing program input and operational control of the entire machine, achieving full automation of the transportation process. The control system connects various actuators to move along logical trajectories, and through programming, controls the actuators to operate according to the required steps.

[0053] The working principle of this utility model is as follows:

[0054] First, the feeding mechanism 2 feeds the pins, then the handling mechanism 3 picks up the pins and moves them to the inspection mechanism 4. The inspection mechanism 4 determines whether the length of the pins is qualified. If the length of the pins is qualified, they are placed in the qualified area of ​​the discharge mechanism 5. If the length of the pins is not qualified, they are placed in the unqualified area of ​​the discharge mechanism 5.

[0055] Since pin length affects many aspects such as positioning accuracy, connection strength, assembly requirements, installation protection functions, standardization and interchangeability, and quality control, precise control of pin length is very important.

[0056] This device can perform fully automated operations such as pin feeding, length detection, and segmented discharge, saving labor costs and improving detection accuracy and efficiency.

[0057] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pin sorting machine, comprising a worktable, characterized in that, It also includes a feeding mechanism, a conveying mechanism, a testing mechanism and a discharging mechanism installed sequentially on the workbench. The pin is fed by the feeding machine hook, and then the conveying mechanism moves the pin to the testing mechanism for length testing. After testing, the discharging mechanism separates qualified and unqualified workpieces. The testing mechanism includes a fixed base, a second linear guide rail mounted on the fixed base, a fixture fixedly mounted at the middle position of the second linear guide rail, and the distance between the hopper's material pick-up point and the fixture is equal to the distance between the two finger-clamping cylinders. Two movable blocks are movably mounted at both ends of the second linear guide rail via sliders. A reference block is mounted on one movable block, and a Keyence measuring pen is mounted on the other movable block. The movable block of the reference block is movably mounted on the fixed base via a movable cylinder. A stop block is mounted on the movable block of the Keyence measuring pen. The front and rear cylinders of the measuring pen abut against the stop block. The front and rear cylinders of the measuring pen are mounted on the fixed base, and a rotary clamping cylinder is mounted on the fixed base to fix the workpiece placed on the fixture.

2. The pin sorting machine according to claim 1, characterized in that, The feeding mechanism includes a linear vibrating channel and a hopper that is mounted on the worktable via a lifting mechanism.

3. A pin sorting machine according to claim 2, characterized in that, The lifting mechanism includes a cylinder mounting base, the cylinder is mounted on the inner wall of the worktable via the cylinder mounting base, the slide rail is mounted on the worktable via the mounting base, and the hopper is mounted on the slide rail and the cylinder.

4. A pin sorting machine according to claim 3, characterized in that, The lifting mechanism is also equipped with a detection component, which includes a mounting bracket installed on the mounting base. The mounting bracket is equipped with photoelectric sensor 2 and photoelectric sensor 1. Photoelectric sensor 2 is used to locate the position of the hopper, and photoelectric sensor 1 is used to locate the position of the tooling.

5. A pin sorting machine according to claim 1, characterized in that, The handling mechanism includes a support frame, a material handling cylinder mounted on the support frame via a linear guide rail, and a mounting plate mounted on the material handling cylinder. Finger-grip cylinders are installed at both ends of the mounting plate.

6. A pin sorting machine according to claim 5, characterized in that, Buffer blocks are installed at both ends of the linear guide rail on the bracket.

7. A pin sorting machine according to claim 1, characterized in that, A connecting block is installed on the end face of the fixed base near the Keyence probe. The moving block of the Keyence probe is elastically connected to the connecting block through a guide post and a spring.

8. A pin sorting machine according to claim 1, characterized in that, The unloading mechanism includes a slide cylinder mounted on the worktable via a cylinder mounting base. A guide rail is installed at an angle on the slide cylinder. Qualified workpiece placement boxes and unqualified workpiece placement boxes are located on both sides of the guide rail. Both qualified and unqualified workpiece placement boxes are mounted on the worktable. The conveying mechanism can directly move the workpiece into the qualified workpiece placement box. When the slide cylinder is activated, the workpiece can fall onto the unqualified workpiece placement box along the guide rail when the conveying mechanism moves the workpiece.

9. A pin sorting machine according to claim 8, characterized in that, The distance between the entrance of the qualified workpiece placement box and the tooling is equal to the distance between the two finger-grip cylinders, while the shortest distance between the guide rail and the tooling is less than or equal to the distance between the two finger-grip cylinders.

Images