Detection device for small-diameter screw

Abstract

The utility model discloses a detection device for a small-diameter screw. The detection device comprises a feeding conveying belt, a discharging conveying belt, a guide plate obliquely arranged between the feeding conveying belt and the discharging conveying belt, and a three-dimensional detector arranged above the middle part of the guide plate, positioning seats are installed on the feeding conveying belt at equal intervals, and positioning grooves are formed in the upper portions of the positioning seats and used for containing screws; jacking blocks are symmetrically installed on the front side and the rear side of the middle of the guide plate, limiting grooves are machined in the upper portions of the jacking blocks, and the sides, facing the discharging conveying belt, of the jacking blocks extend upwards to form limiting plates; the screw slides to the guide plate from the feeding conveying belt and is limited by the limiting plate, the jacking block drives the screw to move upwards and then the screw is detected by the three-dimensional detector, and finally the screw rolls to the discharging conveying belt along the guide plate. The device can automatically realize feeding, positioning and discharging of the screw rod, is matched with a three-dimensional detector to complete detection of various parameters of the screw rod, and is accurate and convenient in positioning and high in detection efficiency.

Description

Technical Field

[0001] This utility model relates to a detection device for small-diameter screws. Background Technology

[0002] A screw is a cylindrical structure with helical grooves cut into its outer wall, or a conical structure with conical helical grooves cut into its outer wall. Different screws have helical grooves of different shapes and specifications machined on their outer walls. The screw is an important component of an extruder. After the screw is manufactured, various parameters need to be tested, such as coaxiality, pitch, and groove depth. Existing testing devices mostly use tooling to position the screw at a fixed testing station, and then cooperate with the testing mechanism to perform the test. This requires repeating the screw feeding, positioning, and discharging process, resulting in low testing efficiency. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides a detection device for small-diameter screws.

[0004] To achieve the above objectives, this utility model provides a detection device for small-diameter screws, including a feeding conveyor belt, a discharging conveyor belt, a guide plate obliquely disposed between the feeding conveyor belt and the discharging conveyor belt, and a three-dimensional detector disposed above the middle of the guide plate;

[0005] Positioning seats are installed at equal intervals on the feeding conveyor belt, and positioning grooves are machined on the upper part of the positioning seats for placing screws;

[0006] The front and rear width of the guide plate is less than the length of the screw. Lifting blocks are symmetrically installed on the front and rear sides of the middle of the guide plate. Limiting grooves are machined on the upper part of the lifting blocks. The lifting blocks extend upward towards the side of the discharge conveyor belt to form a limiting plate.

[0007] The screw slides down from the feed conveyor belt onto the guide plate and is limited by the limiting plate. The lifting block drives the screw to move upward and is then inspected by the three-dimensional detector. Finally, the screw rolls along the guide plate onto the discharge conveyor belt.

[0008] As a further improvement of this utility model, the height of the discharge conveyor belt is lower than that of the feed conveyor belt, and the guide plate is inclined downward from the feed conveyor belt toward the discharge conveyor belt.

[0009] As a further improvement of this utility model, side baffles are symmetrically installed on the front and rear sides of the feeding conveyor belt, the side baffles extend to the discharging conveyor belt, and the distance between the side baffles matches the length of the screw.

[0010] As a further improvement of this utility model, the lower part of the lifting block is connected to a lifting cylinder.

[0011] As a further improvement of this utility model, the upper part of the three-dimensional detector is slidably mounted on the lower part of the upper fixed base in the front-back direction through a screw-slider mechanism.

[0012] As a further improvement of this utility model, the upper fixed base is provided with a signal light.

[0013] As a further improvement of this utility model, the guide plate and the limiting plate are provided with an elastic rubber layer.

[0014] The beneficial effects of this utility model are as follows:

[0015] This device automatically realizes the feeding, positioning, and discharging of the screw by setting up a feeding conveyor belt and a discharging conveyor belt with a height difference, in conjunction with an inclined guide plate and lifting blocks on the front and rear sides of the guide plate. It also works with a three-dimensional detector to complete the detection of various parameters of the screw, with accurate and convenient positioning and high detection efficiency. An elastic rubber layer is set on the surface of the guide plate and the limit plate to prevent the surface from being scratched when the screw rolls down. Attached Figure Description

[0016] Figure 1 This is a front view of a detection device for a small-diameter screw according to the present invention;

[0017] Figure 2 This is a top view of a detection device for a small-diameter screw according to the present invention.

[0018] In the diagram: 1. Feed conveyor belt; 2. Positioning seat; 21. Positioning groove; 3. Screw; 4. Side baffle; 5. Lifting block; 51. Limiting groove; 52. Limiting plate; 6. Lifting cylinder; 7. Guide plate; 8. Discharge conveyor belt; 9. Three-dimensional detector; 10. Screw-slider mechanism; 11. Upper fixed seat; 12. Signal light. Detailed Implementation

[0019] like Figure 1-2 As shown, the present invention discloses a small-diameter screw detection device, which includes a feeding conveyor belt 1, a discharging conveyor belt 8, a guide plate 7 inclined between the feeding conveyor belt 1 and the discharging conveyor belt 8, and a three-dimensional detector 9 located above the middle of the guide plate 7. The height of the discharging conveyor belt 8 is lower than that of the feeding conveyor belt 1. The guide plate 7 is inclined downward from the feeding conveyor belt 1 to the discharging conveyor belt 8. The upper part of the three-dimensional detector 9 is slidably mounted on the lower part of the upper fixed seat 11 in the front-back direction through a screw slider mechanism 10. The upper fixed seat 11 is also provided with an indicator light 12.

[0020] Positioning seats 2 are installed at equal intervals on the feeding conveyor belt 1. Positioning grooves 21 are machined on the upper part of the positioning seats 2 for placing the screw 3. Side baffles 4 are symmetrically installed on the front and rear sides of the feeding conveyor belt 1. The side baffles 4 extend to the discharge conveyor belt 8. The distance between the side baffles 4 matches the length of the screw 3.

[0021] The front and rear width of the guide plate 7 is less than the length of the screw 3. The lifting blocks 5 are symmetrically installed on the front and rear sides of the middle of the guide plate 7. The upper part of the lifting block 5 is machined with a limiting groove 51. The lifting block 5 extends upward towards the side of the discharge conveyor belt 8 to form a limiting plate 52. The lower part of the lifting block 5 is connected to the lifting cylinder 6. The surfaces of the guide plate 7 and the limiting plate 52 are provided with an elastic rubber layer.

[0022] The screw 3 slides down from the feed conveyor belt 1 onto the guide plate 7 and is limited by the limiting plate 52. The lifting block 5 drives the screw 3 to move upward and is then inspected by the three-dimensional detector 9. Finally, the screw 3 rolls along the guide plate 7 onto the discharge conveyor belt 8.

[0023] This device automatically realizes the feeding, positioning, and discharging of the screw by setting up a feeding conveyor belt and a discharging conveyor belt with a height difference, in conjunction with an inclined guide plate and lifting blocks on the front and rear sides of the guide plate. It also works with a three-dimensional detector to complete the detection of various parameters of the screw, with accurate and convenient positioning and high detection efficiency. An elastic rubber layer is set on the surface of the guide plate and the limit plate to prevent the surface from being scratched when the screw rolls down.

[0024] For ease of understanding, this utility model will be described in conjunction with the accompanying drawings for practical use:

[0025] During operation, the screws are first placed sequentially into the positioning slots of the positioning seats on the feeding conveyor belt. The screws move horizontally to the right with the feeding conveyor belt. When the screws reach the right side of the feeding conveyor belt, the positioning seats tilt with the feeding conveyor belt, and the screws slide from the positioning seats onto the guide plate. The screws continue rolling until they reach the middle of the guide plate and are stopped by the limiting plate (the initial position of the limiting plate should be higher than the guide plate, and the lifting block should be lower than the guide plate). Then, the lifting cylinder drives the lifting block to move upwards, and both ends of the screws are inserted into the limiting slots on the upper part of the lifting block. The lifting block then drives the screws to move upwards to... At a specified height, with the middle of the screw suspended in the air, a 3D measuring instrument is used to check various parameters of the screw, such as coaxiality and pitch. If the test result shows that it is qualified, the corresponding indicator light will light up green; if the test result shows that it is unqualified, the corresponding indicator light will light up red. After the test is completed, the lifting block moves the screw down and the screw is placed back on the guide plate. The lifting block continues to move down until the limit plate is lower than the height of the guide plate. The screw then rolls along the guide plate to the discharge conveyor belt. The screw is then subjected to the corresponding processing procedure according to the color of the indicator light.

[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A detection device for a small-diameter screw, characterized in that: Includes a feeding conveyor belt (1), a discharging conveyor belt (8), a guide plate (7) obliquely disposed between the feeding conveyor belt (1) and the discharging conveyor belt (8), and a three-dimensional detector (9) disposed above the middle part of the guide plate (7); Positioning seats (2) are installed at equal intervals on the feeding conveyor belt (1), and positioning grooves (21) are machined on the upper part of the positioning seats (2) for placing screws (3); The front and rear width of the guide plate (7) is less than the length of the screw (3). Lifting blocks (5) are symmetrically installed on the front and rear sides of the middle of the guide plate (7). A limiting groove (51) is machined on the upper part of the lifting block (5). The lifting block (5) extends upward towards the side of the discharge conveyor belt (8) to form a limiting plate (52). The screw (3) slides down from the feed conveyor belt (1) onto the guide plate (7) and is limited by the limiting plate (52). The lifting block (5) drives the screw (3) to move upward and is then detected by the three-dimensional detector (9). Finally, the screw (3) rolls along the guide plate (7) onto the discharge conveyor belt (8).

2. The detection device for a small-diameter screw according to claim 1, characterized in that: The height of the discharge conveyor belt (8) is lower than that of the feed conveyor belt (1), and the guide plate (7) is inclined downward from the feed conveyor belt (1) toward the discharge conveyor belt (8).

3. The detection device for a small-diameter screw according to claim 1, characterized in that: The feeding conveyor belt (1) is symmetrically equipped with side baffles (4) on its front and rear sides. The side baffles (4) extend to the discharge conveyor belt (8). The distance between the side baffles (4) matches the length of the screw (3).

4. The detection device for a small-diameter screw according to claim 1, characterized in that: The lower part of the lifting block (5) is connected to the lifting cylinder (6).

5. The detection device for a small-diameter screw according to claim 1, characterized in that: The upper part of the three-dimensional detector (9) is slidably mounted on the lower part of the upper fixed base (11) in the front-back direction via a screw-slider mechanism (10).

6. The detection device for a small-diameter screw according to claim 5, characterized in that: The upper fixed base (11) is equipped with a signal light (12).

7. The detection device for a small-diameter screw according to claim 1, characterized in that: The guide plate (7) and the limiting plate (52) are provided with an elastic rubber layer.

Images