Screening mechanism for powder metallurgy coating parts

Abstract

The utility model discloses a screening mechanism for powder metallurgy coating parts, particularly relates to the technical field of metal part processing and manufacturing, and comprises a feeding assembly, a screening assembly and a conveying assembly, the conveying assembly comprises a conveying belt and a guide rail. Parts are placed on the conveying belt; the conveyor belt comprises a front half conveyor belt and a rear half conveyor belt; the guide rail comprises a front half-section guide rail and a rear half-section guide rail; the front-half-section conveying belt is fixedly installed on the upper surface of the front-half-section guide rail, a fracture is formed in the front-half-section guide rail, and a wedge-shaped groove is formed in the rear-half-section guide rail. The feeding assembly, the screening assembly and the conveying assembly are matched with one another, conveying of parts and adjustment of postures are completed through a conveying belt of the conveying assembly, the disordered arrangement mode of the special-shaped parts is unified into the fixed arrangement mode of the special-shaped parts, and the special-shaped parts can be conveniently recognized by the screening mechanism; and a coating attached to the product can be prevented from being damaged by conveying of the conveying belt, so that the cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of metal parts processing and manufacturing technology, and more specifically, to a screening mechanism for powder metallurgy coated parts. Background Technology

[0002] In the field of metal parts processing and manufacturing technology in civilian industry, powder metallurgy technology is often used to mass-produce small metal parts. However, if manual visual inspection is used in the production process, there are many problems, such as: 1. Due to the large number of parts, manual visual inspection suffers from poor quality stability due to visual fatigue; 2. Manual inspection can lead to mixed materials of qualified and defective products due to mental fatigue; 3. Inconsistent inspection standards due to human factors; 4. High labor costs, further reducing the profit of powder metallurgy parts processing and manufacturing; 5. Low efficiency of manual inspection, making it difficult to meet the inspection needs of massive numbers of parts. Therefore, in order to improve efficiency, equipment that can automatically inspect parts has been developed to replace manual inspection.

[0003] However, in actual use, since many screening mechanisms use vibration to displace products, the products may collide with the equipment during vibration, which can damage the coating on the products and affect product quality. Therefore, a screening mechanism for powder metallurgy coated parts is proposed as a further improvement. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a screening mechanism for powder metallurgy coated parts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a screening mechanism for powder metallurgy coated parts, wherein the screening mechanism installed on the workbench includes: a conveying component;

[0006] The conveying assembly includes: a conveyor belt and a guide rail; parts are placed on the conveyor belt;

[0007] The conveyor belt includes a front half conveyor belt and a rear half conveyor belt;

[0008] The guide rail installed on the workbench includes: a front half guide rail and a rear half guide rail;

[0009] The front half of the conveyor belt carrying the parts is fixedly installed on the upper surface of the front half guide rail. Both sides of the front half guide rail are fixedly installed with baffles for limiting and preventing parts from slipping. Both the front half guide rail and the baffles have cuts for screening parts. The rear half guide rail has wedge-shaped grooves for the parts to be in a vertical position. The rear half conveyor belt carrying the parts is fixedly installed on the wedge-shaped grooves. The end of the front half conveyor belt is located above the end of the rear half conveyor belt.

[0010] Furthermore, the width of the front half of the guide rail is greater than the width of the part.

[0011] Furthermore, the front half of the guide rail and the front half of the conveyor belt are both designed to be spiral-shaped from top to bottom.

[0012] Furthermore, the cross-sectional shape of the wedge-shaped groove is set to a trapezoidal shape that is wider at the top and narrower at the bottom.

[0013] Furthermore, the part is configured such that one end is thicker and the other end is flatter, and the center of gravity is located at a non-central position at the thicker end.

[0014] Furthermore, the widest part of the wedge-shaped groove is greater than the thickness of the thicker end of the part, the thickness of the thicker end of the part is greater than the narrowest part of the wedge-shaped groove, and the narrowest part of the wedge-shaped groove is greater than the thickness of the flatter end of the part.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] Compared with existing technologies, this method utilizes the cooperation of feeding, screening, and conveying components. By employing the conveyor belt of the conveying component, parts are transported and their orientation adjusted, unifying irregularly arranged parts into a fixed directional arrangement, facilitating identification by the screening mechanism. The parts screening accuracy reaches 99.5%, with strong consistency, and the efficiency and accuracy of screening far exceed that of manual screening. Since the conveyor belt transmission method replaces vibration, it reduces collisions between products and equipment, thereby preventing damage to the coating on the product itself, thus saving costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the conveyor belt structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the guide rail, feeding assembly, and screening assembly of this utility model.

[0019] Figure 3 This is a schematic diagram of the fracture surface of this utility model.

[0020] Figure 4 This is a schematic diagram of the wedge-shaped groove of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the part of this utility model.

[0022] The attached figures are labeled as follows:

[0023] 1. Transmission component;

[0024] 11. Conveyor belt; 111. Front half of the conveyor belt; 112. Rear half of the conveyor belt;

[0025] 12. Guide rail; 121. Front half of the guide rail; 122. Rear half of the guide rail; 1221. Wedge-shaped groove;

[0026] 13. Baffle;

[0027] 14. Fracture surface;

[0028] 2. Feeding assembly; 21. Feeding hopper; 22. Hopper door; 23. Probe;

[0029] 3. Filtering components;

[0030] 31. Transparent tray; 32. Industrial camera; 33. Air gun; 34. Storage tank; 35. Laser probe; 4. Parts. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] As attached Figure 1-5 The image shows a screening mechanism for powder metallurgy coated parts.

[0033] The screening mechanism consists of five parts: feeding, conveying, screening, storage, and control system. The control system controls the operation of the other four parts.

[0034] The screening mechanism includes: feeding component 2;

[0035] The feeding assembly 2 is located above the end of the front half conveyor belt 111 that is away from the rear half conveyor belt 112. The feeding assembly 2 includes: a feeding bin 21 and a bin door 22.

[0036] The feeding bin 21 installed on the workbench is located above the end of the front half conveyor belt 111 away from the rear half conveyor belt 112. The bin door 22 is fixedly installed at the outlet of the feeding bin 21. A probe 23 for determining whether a part 4 has entered the front half guide rail 121 is fixedly installed near the bin door 22. The probe 23 is connected to the motor signal that controls the opening and closing of the bin door 22. The end of the front half guide rail 121 near the bin door 22 is shaped like a flared mouth.

[0037] The probe 23 determines whether part 4 has entered the front half of the conveyor belt 111. If the probe 23 loses signal for a long time, the probe 23 provides an electrical signal to the door 22 through the control system to open the door, so as to ensure that part 4 continues to enter the front half of the conveyor belt 111.

[0038] The feeding section mainly consists of a feeding bin, where staff pre-store a certain number of parts. The bin door is opened or closed intermittently by receiving an electrical signal from the control system, ensuring that a suitable number of parts 4 pass through bin door 22 and enter the conveying section.

[0039] The screening mechanism installed on the workbench includes: a conveyor assembly 1;

[0040] Conveying assembly 1 includes: a conveyor belt 11 and a guide rail 12; part 4 is placed on the conveyor belt 11;

[0041] Conveyor belt 11 includes: a front half conveyor belt 111 and a rear half conveyor belt 112;

[0042] The guide rail 12 installed on the workbench includes: a front half guide rail 121 and a rear half guide rail 122;

[0043] The front half of the conveyor belt 111 carrying part 4 is fixedly installed on the upper surface of the front half guide rail 121. Both sides of the front half guide rail 121 are fixedly installed with baffles 13 for limiting and preventing part 4 from slipping. Both the front half guide rail 121 and the baffles 13 have cutouts 14 for screening part 4. The rear half guide rail 122 has a wedge-shaped groove 1221 for part 4 to be in a vertical position. The rear half conveyor belt 112 carrying part 4 is fixedly installed on the wedge-shaped groove 1221. The end of the front half conveyor belt 111 is located above the end of the rear half conveyor belt 112.

[0044] The conveying component 1, as the conveying part of the screening mechanism, has two main functions: first, to transfer the parts 4 from the feeding part to the screening part; second, through the limiting of the baffle 13 and the screening of the cut 14, the irregularly shaped parts 4 are unified from a disordered arrangement to a specific face facing up, while the face of the parts 4 facing down is a flat surface, so that the parts 4 with the specific face facing up can pass through the cut 14; the wedge-shaped groove 1221 of the rear half of the conveyor belt 112 is used to make the parts 4 vertical, so that all the parts 4 are arranged in one direction, which is convenient for the screening part to identify.

[0045] Among them, as attached Figure 1-5 As shown, part 4 is designed with one end thicker and the other end flatter, and its center of gravity is located off-center at the thicker end. Since part 4 is an irregularly shaped object with one end thicker and the other flatter, its center of gravity is located off-center at the thicker end. Some parts 4 will fall off the front half of the guide rail 121 at the break 14 due to instability of the center of gravity, ultimately ensuring that all parts 4 are facing upwards.

[0046] Example of part 4: The thickness of the flatter end of part 4 is set to 2.3 mm; the thickness of the thicker end of part 4 is set to 6.8 mm;

[0047] In a preferred embodiment, as shown in the appendix Figure 1-5 As shown, the width of the first half of the guide rail 121 is greater than the width of part 4;

[0048] In this section, the width of the first half of the guide rail 121 exceeds the width of the part 4, and baffles 14 are fixed on both sides of the first half of the guide rail 121. The entrance of the first half of the guide rail 121 is flared, guiding the parts 4 one by one into the first half of the guide rail 121. Too many parts 4 that fail to enter the guide rail in time are blocked by the flared opening.

[0049] For example, the width of the first half of the guide rail 121 can be set to a range of 1-1.5 times the width of part 4.

[0050] In a preferred embodiment, as shown in the appendix Figure 1-5 As shown, the front half of the guide rail 121 and the front half of the conveyor belt 111 are both designed as spiral shapes from top to bottom.

[0051] In a preferred embodiment, as shown in the appendix Figure 1-5 As shown, the cross-sectional shape of the wedge-shaped groove 1221 is set as a trapezoidal shape that is wider at the top and narrower at the bottom.

[0052] In a preferred embodiment, as shown in the appendix Figure 1-5 As shown, the widest part of the wedge-shaped groove 1221 is greater than the thickness of the thicker end of the part 4, the thickness of the thicker end of the part 4 is greater than the narrowest part of the wedge-shaped groove 1221, and the narrowest part of the wedge-shaped groove 1221 is greater than the thickness of the flatter end of the part 4.

[0053] In the latter half of the conveyor belt 112, wedge-shaped grooves 1221 are opened diagonally downward in a trapezoidal shape on both sides. The width of the wedge-shaped grooves 1221 exceeds the thickness of the flatter end of the part 4, thus guiding the part 4 to be in a vertical state with the flatter end of the part 4 facing downward and the thicker end of the part 4 facing upward when passing through the wedge-shaped grooves 1221. At this point, all parts 4 are aligned in the same direction.

[0054] The screening mechanism also includes: Screening Component 3;

[0055] The screening component 3 is located below the end of the rear half conveyor belt 112 that is away from the front half conveyor belt 111. The screening component 3 includes: a transparent tray 31, an industrial camera 32, an air gun 33, a storage tank 34, and a laser probe 35.

[0056] The transparent tray 31 installed on the workbench is located below the end of the rear half of the conveyor belt 112 away from the front half of the conveyor belt 111. The industrial camera 32 installed on the workbench faces the transparent tray 31. The tray conveyor belt is fixedly installed on the upper surface of the transparent tray 31. Two air guns 33 are fixedly installed on both sides of the transparent tray 31. Two storage tanks 34 are installed on both sides of the transparent tray 31. The two storage tanks 34 are respectively located in the air blowing direction of the two air guns 33. The laser probe 35 installed on the workbench is located between the air guns 33 and the storage tanks 34.

[0057] The screening section is a transparent tray 31; the parts 4 are entered into the transparent tray 31 one by one and scanned by industrial cameras 32 in 6 directions; the photos and models of defective parts are pre-input into the control system, so that the images taken by the industrial cameras 32 are compared with the defective product morphology library to determine whether they are qualified or not.

[0058] The storage section is a storage tank 34; two air guns 33 blow towards the corresponding qualified and defective products respectively; after the part shape comparison is completed, an electrical signal is given to the corresponding air gun 33, and the air gun 33 blows once to blow the part 4 into the storage tank 34; the laser probe 35 is located between the air gun storage and the storage tank and has a counting function, so as to quickly grasp the quantity and pass rate of the part 4.

[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0060] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening mechanism for powder metallurgy coated parts, characterized by: The screening mechanism installed on the workbench comprises a conveying assembly (1); The conveying assembly (1) comprises a conveying belt (11) and a guide rail (12); the parts (4) are placed on the conveying belt (11); The conveying belt (11) comprises a front half conveying belt (111) and a rear half conveying belt (112); The guide rail (12) installed on the workbench comprises a front half guide rail (121) and a rear half guide rail (122); The front half conveying belt (111) carrying the parts (4) is fixedly installed on the upper surface of the front half guide rail (121), the two sides of the front half guide rail (121) are fixedly installed with baffle plates (13) for limiting and preventing the parts (4) from falling, the front half guide rail (121) and the baffle plates (13) are both provided with breaks (14) for screening the parts (4), the rear half guide rail (122) is provided with wedge-shaped grooves (1221) for the parts (4) in a vertical state, the rear half conveying belt (112) carrying the parts (4) is fixedly installed on the wedge-shaped grooves (1221), and the end of the front half conveying belt (111) is located above the end of the rear half conveying belt (112).

2. A screening mechanism for powder metallurgy coated parts according to claim 1, characterized in that: The width of the front half guide rail (121) is greater than the width of the parts (4).

3. A screening mechanism for powder metallurgy coated parts according to claim 1, characterized in that: The shapes of the front half guide rail (121) and the front half conveying belt (111) are both set as spiral shapes from top to bottom.

4. A screening mechanism for powder metallurgy coated parts according to claim 1, characterized in that: The shape of the cross section of the wedge-shaped groove (1221) is set as a trapezoidal shape with the upper part wider and the lower part narrower.

5. A screening mechanism for powder metallurgy coated parts according to claim 1, characterized in that: The parts (4) are set as non-central parts with one end thicker and the other end flatter, and the center of gravity is located at the non-central part of the thicker end.

6. A screening mechanism for powder metallurgy coated parts according to claim 1, characterized in that: The widest part of the wedge-shaped groove (1221) is greater than the thickness of the thicker end of the parts (4), the thickness of the thicker end of the parts (4) is greater than the narrowest part of the wedge-shaped groove (1221), and the narrowest part of the wedge-shaped groove (1221) is greater than the thickness of the flatter end of the parts (4).

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