Raw material screening device for bar machining

Abstract

The utility model relates to the field of bar processing, in particular to a raw material screening device for bar processing, which comprises a feeding table and further comprises a detection component arranged at the right end of the feeding table, the detection component measures the diameter size of a bar, the bottom of the feeding table is fixedly connected with a support frame, two sides of the upper end of the feeding table are fixedly connected with side baffles, and the side baffles are fixedly connected with the support frame. A stock bin is fixedly installed on the left side of the top of the side baffle, a mounting frame is fixedly installed at the right end of the surface of the side baffle, a material blocking assembly is arranged on the inner side of the mounting frame and blocks the right end of the feeding table, and a marking assembly is arranged on the side of the top of the mounting frame and conducts screening and marking according to the measured size; bars can enter the detection assembly through sliding of the feeding table, the positions, falling into the V-shaped groove, of the bars with different diameters are different through bearing of the V-shaped groove, image detection operation is facilitated, and screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bar stock processing, and in particular to a raw material screening device for bar stock processing. Background Technology

[0002] Bar stock refers to materials in the shape of round or polygonal rods of a certain length, in contrast to sheet metal and other profiles. Bar stock is also often used as raw material for processing slender rod-shaped parts. The thickness of semi-finished bar stock varies, and it needs to be screened to a certain extent before finishing. Bar stock that is too thick or too thin can easily affect the processing accuracy.

[0003] The current raw material screening device for bar stock processing requires measuring the diameter of the bar stock to screen for fineness. However, the diameter measurement requires confirming the center point of the bar stock, which makes the measurement process inconvenient, time-consuming, and labor-intensive. Similarly, intelligent image detection also requires confirming the center point of the bar stock, resulting in low screening efficiency.

[0004] Therefore, in order to solve the above problems, we propose a raw material screening device for bar stock processing, which facilitates the screening of bar stock and ensures screening efficiency. Utility Model Content

[0005] To overcome the problem that existing raw material screening devices for bar stock processing require identifying the center point of the bar stock for fineness screening, resulting in low screening efficiency.

[0006] The technical solution of this utility model is as follows: a raw material screening device for bar stock processing, including a feeding platform, and a detection component set at the right end of the feeding platform. The detection component measures the diameter of the bar stock. A support frame is fixedly connected to the bottom of the feeding platform. Side baffles are fixedly connected to both sides of the upper end of the feeding platform. A hopper is fixedly installed on the left side of the top of the side baffle. A mounting frame is fixedly installed on the right end of the side baffle. A material blocking component is set inside the mounting frame. The material blocking component forms a barrier to the right end of the feeding platform. A marking component is set on the side of the top of the mounting frame. The marking component performs screening and marking according to the measured size.

[0007] The detection component includes a positioning box with a V-groove on its surface. A pushing component is installed on the top of the positioning box to push the bar out of the V-groove. A baffle plate is fixedly installed on the right side of the top of the positioning box. An image acquisition device is installed at the front end of the positioning box to acquire image information of the position of the bar in the V-groove.

[0008] Preferably, the hopper is used to store bar stock, and the bottom of the hopper is provided with an inclined plate. The bottom of the hopper is located on the side of the inclined plate and a discharge port is provided. The stored bar stock enters the feeding platform through the discharge port.

[0009] Preferably, the baffle assembly includes an L-shaped baffle plate, and two L-shaped baffle plates are provided. The L-shaped baffle plate and the top of the mounting frame are movably connected by a lifting cylinder. Guide rods are fixedly connected to both sides of the upper end of the L-shaped baffle plate. The guide rods are slidably connected to the mounting frame. When the L-shaped baffle plate moves downward, the L-shaped baffle plate blocks the bar stock on the feeding platform.

[0010] Preferably, the marking assembly includes an extension plate fixedly mounted on the top of the mounting frame. An electric push rod is provided at the upper end of the extension plate, and a marking head is fixedly connected to the output end of the electric push rod. When the marking head moves downward, the marking head adheres to the bar stock and transfers the text information on the marking head to the surface of the bar stock.

[0011] Preferably, the pushing component includes an outer shell fixedly installed at the bottom of the positioning box, a lead screw installed in the outer shell, a moving block threaded on the surface of the lead screw, a pushing rod fixedly installed on the surface of the moving block, a scale on the surface of the pushing rod, and the movement of the pushing rod can push the bar out of the V-groove. A sliding groove is opened at the bottom of the V-groove, and the pushing rod and the sliding groove are slidably connected.

[0012] Preferably, a servo motor is fixedly installed at the front end of the housing, and the two ends of the lead screw are rotatably connected to the front and rear ends of the housing, respectively. The output end of the servo motor is fixedly connected to the front end of the lead screw, and the servo motor is used to drive the lead screw to rotate.

[0013] Preferably, the rear end of the image acquisition device is equipped with a camera (an industrial camera, which can be equipped with an LED backlight) for acquiring images. The camera is compatible with the V-groove. The image acquisition device is equipped with an information transmission module. The image acquisition device is connected to an external information processing device through a line to process the acquired image information. The image processing algorithm of the information processing device is as follows: 1. Preprocessing stage: The image acquired by the camera needs to be filtered by median to eliminate salt-and-pepper noise, and the ROI region is segmented by adaptive binarization using the Otsu algorithm. 2. Feature extraction: First, edge detection is performed, and the contact line between the V-groove and the bar is extracted according to the Canny operator. Then, sub-pixel fitting is used, and cubic spline interpolation is used to improve the edge positioning accuracy to 0.1 pixel level. 3. Diameter calculation: The diameter size is confirmed according to the position, and it is analyzed whether the diameter meets the required bar size.

[0014] The calculation formula is: D=\frac{2H}{\sqrt{3}}-\frac{2d}{\sin60°}, where H is the V-groove depth calibration value and d is the pixel distance from the center of the bar to the bottom of the groove.

[0015] The beneficial effects of this utility model are:

[0016] 1. This raw material screening device for bar processing allows the bars to enter the detection assembly via the sliding of the feeding table. The V-groove ensures that bars of different diameters fall into the V-groove at different positions, facilitating image detection and improving screening efficiency.

[0017] 2. The raw material screening device for bar processing can mark qualified bars after the bar size is confirmed, thereby achieving screening. After the bars are pushed, the personnel can simply extract the marked bars, which simplifies the device and facilitates maintenance. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic representation of the overall structure of the raw material screening device for bar stock processing according to this utility model.

[0019] Figure 2 The diagram shown is a schematic representation of the mounting frame structure of the raw material screening device for bar processing according to this utility model.

[0020] Figure 3 The diagram shown is a schematic representation of the positioning box structure of the raw material screening device for bar processing according to this utility model.

[0021] Figure 4 The diagram shown is a schematic representation of the outer casing structure of the raw material screening device for bar stock processing according to this utility model.

[0022] Figure 5 The diagram shown is a rear view of the raw material screening device for bar processing according to this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Feeding platform; 2. Support frame; 3. Hopper; 4. Side baffle; 5. Mounting frame; 51. L-shaped baffle; 52. Guide rod; 53. Extension plate; 54. Electric push rod; 55. Marking head; 101. Positioning box; 102. V-groove; 103. Blocking plate; 104. Image acquisition device; 105. Housing; 1051. Lead screw; 1052. Moving block; 1053. Push rod; 1054. Servo motor. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please see Figures 1-5This utility model provides an embodiment of a raw material screening device for bar stock processing, including a feeding platform 1 and a detection component installed at the right end of the feeding platform 1. The detection component measures the diameter of the bar stock. A support frame 2 is fixedly connected to the bottom of the feeding platform 1. Side baffles 4 are fixedly connected to both sides of the upper end of the feeding platform 1. A hopper 3 is fixedly installed on the left side of the top of the side baffle 4. The hopper 3 is used to store bar stock, and an inclined plate is provided at the bottom of the hopper 3. A discharge port is provided at the bottom of the hopper 3 on the side of the inclined plate. The stored bar stock enters the feeding platform 1 through the discharge port. A mounting frame 5 is fixedly installed on the right end of the surface of the side baffle 4. A material blocking component is provided on the inner side of the mounting frame 5. The material blocking component forms a barrier on the right end of the feeding platform 1. A marking component is provided on the top side, which performs screening and marking based on the measured size; the detection component includes a positioning box 101, the surface of which has a V-groove 102, and a pushing component is provided on the top of the positioning box 101, which pushes the bar out of the V-groove 102. A baffle plate 103 is fixedly installed on the right side of the top of the positioning box 101, and an image acquisition device 104 is provided at the front end of the positioning box 101. The image acquisition device 104 is used to acquire image information of the position of the bar in the V-groove 102. The bar slides on the feeding table 1, so that the bar enters the V-groove 102. The image acquisition device 104 detects the position of the bar, confirms the size of the bar, and screens out bars of suitable size.

[0026] Please see Figure 1 and Figure 2 In this embodiment, the material blocking assembly includes an L-shaped material blocking plate 51. Two L-shaped material blocking plates 51 are provided. The top of the L-shaped material blocking plate 51 and the mounting frame 5 are movably connected by a lifting cylinder. Guide rods 52 are fixedly connected to both sides of the upper end of the L-shaped material blocking plate 51. The guide rods 52 and the mounting frame 5 are slidably connected. When the L-shaped material blocking plate 51 moves downward, it blocks the bar material on the feeding platform 1. The bar material on the feeding platform 1 slides down in sequence. After the bar material enters the detection assembly, the lifting cylinder pushes the L-shaped material blocking plate 51 downward to block the bar material, so that only one bar material can enter at a time.

[0027] Please see Figure 1 and Figure 2 , Figure 5 In this embodiment, the marking assembly includes an extension plate 53 fixedly installed on the top of the mounting frame 5. An electric push rod 54 is provided at the upper end of the extension plate 53. A marking head 55 is fixedly connected to the output end of the electric push rod 54. When the marking head 55 moves downward, the marking head 55 adheres to the bar stock and transfers the text information on the marking head 55 to the surface of the bar stock. After inspection, the bar stock with qualified dimensions is marked by the marking head 55 to achieve screening.

[0028] Please see Figure 1 and Figure 3, Figure 4 In this embodiment, the pushing component includes an outer shell 105 fixedly installed at the bottom of the positioning box 101. A lead screw 1051 is installed in the outer shell 105. A moving block 1052 is threaded onto the surface of the lead screw 1051. A pushing rod 1053 is fixedly installed on the surface of the moving block 1052. A scale is provided on the surface of the pushing rod 1053. The movement of the pushing rod 1053 can push the bar material out of the V-groove 102. A sliding groove is provided at the bottom of the V-groove 102, and the pushing rod 1053 is slidably connected to the sliding groove. A servo motor 1054 is fixedly installed at the front end of the outer casing 105. The two ends of the lead screw 1051 are rotatably connected to the front and rear ends of the outer casing 105, respectively. The output end of the servo motor 1054 is fixedly connected to the front end of the lead screw 1051. The servo motor 1054 is used to drive the lead screw 1051 to rotate. The servo motor 1054 drives the lead screw 1051 to rotate, which causes the moving block 1052 to drive the push rod 1053 to move, thereby pushing the bar out of the V-groove 102. The bar moves to the rear side to realize the pushing.

[0029] Please see Figure 1 and Figure 5 In this embodiment, a camera for capturing images is provided on the rear end face of the image acquisition device 104, and the camera is adapted to the V-groove 102. The image acquisition device 104 is provided with an information transmission module. The image acquisition device 104 is connected to an external information processing device through a line to process the captured image information. The image acquisition device 104 captures image information in the V-groove 102, which facilitates the confirmation of the position of the bar in the V-groove 102. In addition, an algorithm calculation method can be added to calculate the size of the bar, which facilitates subsequent screening and improves the overall accuracy.

[0030] During operation, the bar stock is placed into the hopper 3, allowing it to enter the feeding platform 1 and slide, naturally entering the positioning box 101. The bar stock falls into the V-groove 102. The V-shaped structure of the bar stock results in different positions for bars of different sizes within the V-groove 102. The image information acquired by the image acquisition device 104 can be used to confirm whether the bar stock size is qualified based on its height. Simultaneously, the image information acquired by the image acquisition device 104 can be used to calculate the size of the bar stock, improving screening efficiency. Qualified bars are marked by the marking component, and then the servo motor 1054 drives the lead screw 1051 to rotate, causing the moving block 1052 to move the push rod 1053, thereby pushing the bar stock out of the V-groove 102. The bar stock moves backward, thus achieving the push-out.

[0031] Through the above steps, the bar slides on the feeding table 1, so that the bar enters the V-groove 102. The image acquisition device 104 detects the position of the bar, confirms the size of the bar, and screens out bars of appropriate size. This solves the problem that the existing bar processing raw material screening device requires confirmation of the center point of the bar for screening the coarseness, resulting in low screening efficiency.

Claims

1. A raw material screening device for bar stock processing, comprising a feeding platform (1), characterized in that: It also includes a detection component set on the right end of the feeding platform (1), which measures the diameter of the bar stock. A support frame (2) is fixedly connected to the bottom of the feeding platform (1). Side baffles (4) are fixedly connected to both sides of the upper end of the feeding platform (1). A hopper (3) is fixedly installed on the left side of the top of the side baffle (4). An installation frame (5) is fixedly installed on the right end of the surface of the side baffle (4). A material blocking component is set on the inner side of the installation frame (5). The material blocking component forms a barrier to the right end of the feeding platform (1). A marking component is set on the side of the top of the installation frame (5). The marking component performs screening and marking according to the measured size. The detection component includes a positioning box (101), a V-groove (102) is provided on the surface of the positioning box (101), a pushing component is provided on the top of the positioning box (101), the pushing component pushes the bar out of the V-groove (102), and a baffle plate (103) is fixedly installed on the right side of the top of the positioning box (101). An image acquisition device (104) is provided at the front end of the positioning box (101), and the image acquisition device (104) is used to acquire image information of the position of the bar in the V-groove (102).

2. The raw material screening device for bar stock processing according to claim 1, characterized in that: The hopper (3) is used to store bar stock, and the bottom of the hopper (3) is provided with an inclined plate. The bottom of the hopper (3) is located on the side of the inclined plate and has a discharge port. The stored bar stock enters the feeding platform (1) through the discharge port.

3. The raw material screening device for bar stock processing according to claim 1, characterized in that: The baffle assembly includes an L-shaped baffle plate (51), and there are two L-shaped baffle plates (51). The top of the L-shaped baffle plate (51) and the mounting frame (5) are connected by a lifting cylinder. Guide rods (52) are fixedly connected to both sides of the upper end of the L-shaped baffle plate (51). The guide rods (52) and the mounting frame (5) are slidably connected. When the L-shaped baffle plate (51) moves downward, the L-shaped baffle plate (51) blocks the bar material on the feeding table (1).

4. The raw material screening device for bar stock processing according to claim 1, characterized in that: The marking assembly includes an extension plate (53) fixedly installed on the top of the mounting frame (5). An electric push rod (54) is provided at the upper end of the extension plate (53). A marking head (55) is fixedly connected to the output end of the electric push rod (54). When the marking head (55) moves downward, the marking head (55) adheres to the bar stock and transfers the text information on the marking head (55) to the surface of the bar stock.

5. The raw material screening device for bar stock processing according to claim 1, characterized in that: The pushing assembly includes an outer shell (105) fixedly installed at the bottom of the positioning box (101). A lead screw (1051) is installed in the outer shell (105). A moving block (1052) is threaded onto the surface of the lead screw (1051). A pushing rod (1053) is fixedly installed on the surface of the moving block (1052). A scale is provided on the surface of the pushing rod (1053). The movement of the pushing rod (1053) can push the bar in the V-groove (102). A sliding groove is provided at the bottom of the V-groove (102). The pushing rod (1053) and the sliding groove are slidably connected.

6. The raw material screening device for bar stock processing according to claim 5, characterized in that: A servo motor (1054) is fixedly installed at the front end of the outer casing (105). The two ends of the lead screw (1051) are rotatably connected to the front and rear ends of the outer casing (105) respectively. The output end of the servo motor (1054) is fixedly connected to the front end of the lead screw (1051). The servo motor (1054) is used to drive the lead screw (1051) to rotate.

7. The raw material screening device for bar stock processing according to claim 1, characterized in that: The rear end of the image acquisition device (104) is equipped with a camera for acquiring images, and the camera is compatible with the V-groove (102). The image acquisition device (104) is equipped with an information transmission module. The image acquisition device (104) processes the acquired image information by connecting an external information processing device through a line.

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