Automatic receiving device for preventing mistake of PCBA mounting materials

Abstract

The utility model relates to PCBA pastes and installs material technology field especially is PCBA pastes and installs mistake proof material automatic material receiving device, including placing rack and material receiving subassembly, is set up two material discharge groove on the placing rack, the material discharge groove inside places a plurality of material tray, the fixedly connected with the welding seat on the placing rack, is equipped with the welding assembly on the welding seat, and the welding assembly includes the support, the fixedly connected with the inclined block on the support, installs a plurality of first laser range finder on the inclined block, is installed on the support the rodless cylinder, the sliding block has on the rodless cylinder, one end of sliding block is equipped with hot melting block, and the material receiving subassembly includes second T block, and the sliding connection has the moving block on second T block, and the fixedly connected with the limit block on the moving block upper end. Directly detect the material band tail end through the first laser range finder, reduced the signal delay of indirect monitoring mode, improved the accuracy of material band state detection, realized real -time trigger material receiving, ensured that the material band butt joint precision, improved the material receiving efficiency, improved the reliability of PCBA pastes.

Description

TECHNICAL FIELD

[0001] The utility model relates to PCBA pastes material technology field especially PCBA pastes mistake proofing material automatic material receiving device. BACKGROUND

[0002] In the electronic manufacturing field, the automation level of PCBA pasting process directly affects production efficiency and product quality, and the automatic connection and mistake proofing of the material belt are key links.

[0003] Through the retrieval, the patent with the announcement number CN113573567B provides a mistake proofing material feeding device for SMT chip mounter, the device adds a verifier before the material belt enters the feeder, rechecks the material belt to prevent mistake, and controls the tightness of the material belt by monitoring the vibration amplitude of the material belt disc to avoid the breakage of the material belt.

[0004] But in the use process, it is found that the device indirectly judges the material belt state by monitoring the material disc vibration or coil induction current, the mechanical vibration of the chip mounter itself is superimposed with the vibration irrelevant to the material belt state in the running process, leading to the distortion of the monitoring signal, making it difficult to directly and real-timely detect the actual remaining amount of the material feeding tail end, easily leading to positioning deviation, and further affecting the butt joint effect and efficiency of the material belt tail end, which is not conducive to the material receiving use of PCBA pasting. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a PCBA pasting mistake proofing material automatic material receiving device, reduces the signal delay of the indirect monitoring mode, improves the accuracy of the material belt state detection, realizes real-time triggering of material receiving, ensures the butt joint precision of the material belt, improves the material receiving efficiency, and improves the reliability of PCBA pasting.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a PCBA pasting mistake proofing material automatic material receiving device, comprising a placing rack and a material receiving assembly, two material placing grooves are formed in the placing rack, a plurality of material discs are placed in the material placing grooves, a welding seat is fixedly connected to the placing rack, and a welding assembly is arranged on the welding seat.

[0007] The welding assembly comprises a support, an inclined block is fixedly connected to the support, a plurality of first laser range finders are installed on the inclined block, a rodless cylinder is installed on the support, a sliding block is slidably connected to the rodless cylinder, and a hot melting block is arranged at one end of the sliding block.

[0008] The material receiving assembly comprises a second T-shaped block, a moving block is slidably connected to the second T-shaped block, a limiting block is fixedly connected to the upper end of the moving block, a push block is slidably connected to the limiting block, and a pasting head is arranged at the lower end of the push block.

[0009] A second laser rangefinder and a CCD vision camera are respectively installed on the upper end of the hot melt block and on the outside of the mounting head.

[0010] Preferably, the inner wall of the feeding trough is fixed with a plurality of partition blocks, the material tray has a material strip wound on it, the top surface of the welding seat has a limiting groove, and the material strip is inserted into the limiting groove.

[0011] The above technical solution uses a limiting groove for positioning to ensure the material strip remains stable during the welding process.

[0012] Preferably, a circular roller is rotatably connected to the bracket, a trapezoidal block is fixedly connected to the slider, a first T-shaped block slides on the trapezoidal block, a heat insulation block is fixedly provided on the side wall of the first T-shaped block, a piston cylinder is installed at the upper end of the first T-shaped block, and the bottom surface of the piston rod of the piston cylinder is fixedly connected to the top surface of the trapezoidal block.

[0013] Through the above technical solution, the piston cylinder drives the first T-shaped block to slide along the trapezoidal block, thereby driving the hot melt block to move up and down, realizing the docking with the material strip in the limiting groove, and completing the welding of the beginning and end of the material strip.

[0014] Preferably, the bottom surface of the heat insulation block is fixedly connected to the top surface of the hot melt block, and the hot melt block is inserted into the limiting groove. One of the second laser rangefinders and the CCD vision camera are respectively installed on both sides of the heat insulation block.

[0015] Through the above technical solution, the second laser rangefinder and CCD vision camera on both sides of the heat insulation block detect the height change and surface morphology of the welding area, respectively, to verify whether the welding effect meets the requirements, ensure the accuracy of the welding position, and reduce the risk of misalignment.

[0016] Preferably, the second T-shaped block is fixed on the placement frame, an electric push rod is installed on the top surface of the push block, the bottom surface of the piston rod of the electric push rod is fixedly connected to the top surface of the mounting head, and the outer peripheral wall of the piston rod of the electric push rod is slidably connected to the push block.

[0017] Through the above technical solution, the electric push rod descends to allow the mounting head to pick up the beginning of the material strip. Then, the mounting head moves to the end of the old material strip in the limiting groove, and the electric push rod moves again to connect the new and old material strips, waiting for the hot melt block to complete the welding.

[0018] Preferably, connecting blocks are fixed at both ends of the second T-shaped block, and a lead screw is provided between the two connecting blocks. The outer peripheral walls of the two ends of the lead screw are rotatably connected to the connecting blocks.

[0019] Preferably, one of the connecting blocks is equipped with a forward and reverse motor, the output shaft of which is coaxially connected to the lead screw.

[0020] Through the above technical solution, the forward and reverse motor drives the lead screw to rotate, which in turn drives the moving block that is threaded with the lead screw to slide along the second T-shaped block, thereby realizing the axial movement of the mounting head along the lead screw.

[0021] Preferably, a pneumatic slide is installed on the side wall of the limiting block, and the slide of the pneumatic slide is fixedly connected to the push block.

[0022] Through the above technical solution, the pneumatic slide table drives the pusher block to slide along the limit block.

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

[0024] The first laser rangefinder on the tilting block emits a laser to the tape in the feeding tray, monitoring the remaining length of the tape in real time. When the tape is about to run out, the system triggers the receiving process. The placement head of the receiving assembly picks up the tape from the new tray. After the moving block moves the limiting block to the appropriate position, the push block moves the placement head to move the new tape into the limiting groove, making the beginning of the new tape and the end of the old tape coplanar. The rodless cylinder drives the slider to move the hot melt block to the joint area between the new and old tapes. After melting the surface plastic at the beginning and end of the tape, the hot melt is formed by pressure molding, realizing automatic receiving. The first laser rangefinder directly detects the end of the tape, reducing the signal delay of the indirect monitoring method, improving the accuracy of tape status detection, realizing real-time triggering of receiving, ensuring tape docking accuracy, improving receiving efficiency, and enhancing the reliability of PCBA mounting. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the material receiving component structure of this utility model;

[0027] Figure 3 This is a bottom-view perspective view of the mounting head structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the inclined block structure of this utility model;

[0029] Figure 5 This is a bottom-view perspective view of the hot melt block structure of this utility model.

[0030] In the diagram: 100, placement rack; 101, material chute; 102, material tray; 103, welding seat; 104, partition block; 105, limiting groove;

[0031] 200. Welding assembly; 201. Support; 202. Inclined block; 203. First laser rangefinder; 204. Rodless cylinder; 205. Slider; 206. Hot melt block; 207. Trapezoidal block; 208. First T-shaped block; 209. Heat insulation block; 210. Piston cylinder; 211. Circular roller;

[0032] 300. Receiving assembly; 301. Second T-block; 302. Moving block; 303. Limiting block; 304. Push block; 305. Electric push rod; 306. Placement head; 307. Connecting block; 308. Lead screw; 309. Forward and reverse motor; 310. Pneumatic slide table;

[0033] 400. Second laser rangefinder;

[0034] 500, CCD vision camera. Detailed Implementation

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0036] like Figures 1-5 As shown, this embodiment provides an automatic receiving device for preventing errors in PCBA mounting, including a placement rack 100 and a receiving component 300. The placement rack 100 has two material feeding slots 101, and multiple material trays 102 are placed inside the material feeding slots 101. A soldering seat 103 is fixedly connected to the placement rack 100, and a soldering component 200 is provided on the soldering seat 103.

[0037] The welding assembly 200 includes a bracket 201, an inclined block 202 fixedly connected to the bracket 201, a plurality of first laser rangefinders 203 mounted on the inclined block 202, a rodless cylinder 204 mounted on the bracket 201, a slider 205 sliding on the rodless cylinder 204, and a hot melt block 206 provided at one end of the slider 205.

[0038] The receiving component 300 includes a second T-shaped block 301, a movable block 302 slidably connected to the second T-shaped block 301, a limiting block 303 fixedly connected to the upper end of the movable block 302, a push block 304 slidably connected to the limiting block 303, and a mounting head 306 provided at the lower end of the push block 304.

[0039] A second laser rangefinder 400 and a CCD vision camera 500 are respectively installed on the upper end of the hot melt block 206 and the outside of the mounting head 306.

[0040] Multiple partition blocks 104 are fixedly provided on the inner wall of the feeding trough 101. The material strip is wound on the material tray 102. A limiting groove 105 is opened on the top surface of the welding seat 103. The material strip is inserted into the limiting groove 105. The limiting groove 105 is used for positioning to ensure that the material strip remains stable during the welding process.

[0041] A circular roller 211 is rotatably connected to the bracket 201, a trapezoidal block 207 is fixedly connected to the slider 205, a first T-shaped block 208 slides on the trapezoidal block 207, a heat insulation block 209 is fixedly provided on the side wall of the first T-shaped block 208, a piston cylinder 210 is installed at the upper end of the first T-shaped block 208, and the bottom surface of the piston rod of the piston cylinder 210 is fixedly connected to the top surface of the trapezoidal block 207; the piston cylinder 210 drives the first T-shaped block 208 to slide along the trapezoidal block 207, thereby driving the hot melt block 206 to move up and down, realizing docking with the material strip in the limiting groove 105, and completing the welding of the beginning and end of the material strip.

[0042] The bottom surface of the heat insulation block 209 is fixedly connected to the top surface of the hot melt block 206, and the hot melt block 206 is inserted into the limiting groove 105. A second laser rangefinder 400 and a CCD vision camera 500 are respectively installed on both sides of the heat insulation block 209. The second laser rangefinder 400 and the CCD vision camera 500 on both sides of the heat insulation block 209 detect the height change and surface morphology of the welding area, verify whether the welding effect meets the requirements, ensure the accuracy of the welding position, and reduce the risk of misalignment.

[0043] The second T-shaped block 301 is fixed on the placement frame 100. An electric push rod 305 is installed on the top surface of the push block 304. The bottom surface of the piston rod of the electric push rod 305 is fixedly connected to the top surface of the placement head 306. The outer peripheral wall of the piston rod of the electric push rod 305 is slidably connected to the push block 304. The electric push rod 305 descends to make the placement head 306 absorb the beginning of the material strip. Then, the placement head 306 moves to the end of the old material strip in the limiting groove 105. The electric push rod 305 moves again to connect the new and old material strips, waiting for the hot melt block 206 to complete the welding.

[0044] Connecting blocks 307 are fixed at both ends of the second T-shaped block 301, and a lead screw 308 is provided between the two connecting blocks 307. The outer peripheral walls of both ends of the lead screw 308 are rotatably connected to the connecting blocks 307. A forward and reverse motor 309 is installed on one of the connecting blocks 307, and the output shaft of the forward and reverse motor 309 is coaxially connected to the lead screw 308. The forward and reverse motor 309 drives the lead screw 308 to rotate, which drives the moving block 302, which is threadedly engaged with the lead screw 308, to slide along the second T-shaped block 301, so as to realize the placement head 306 moving along the axial direction of the lead screw 308.

[0045] A pneumatic slide 310 is installed on the side wall of the limiting block 303. The slide of the pneumatic slide 310 is fixedly connected to the push block 304. The pneumatic slide 310 drives the push block 304 to slide along the limiting block 303.

[0046] Working principle: The first laser rangefinder 203 on the tilting block 202 emits a laser to the material strip on the feeding tray 102 to monitor the remaining length of the material strip in real time. When the material strip is about to run out, the system triggers the receiving process. The mounting head 306 of the receiving component 300 absorbs the material strip from the new tray 102. After the moving block 302 drives the limiting block 303 to move to the appropriate position, the pushing block 304 pushes the mounting head 306 to move, transferring the new material strip into the limiting groove 105, so that the beginning of the new material strip and the end of the old material strip form a coplanar plane. The rodless cylinder 204 drives the slider 205 to move the hot melt block 206 to the joint area between the new and old material strips. After melting the surface plastic at the beginning and end of the material strip, the hot melt welding is completed by holding the pressure and forming, realizing automatic receiving. The first laser rangefinder 203 directly detects the end of the material strip, reducing the signal delay of the indirect monitoring method, improving the accuracy of the material strip status detection, and realizing real-time triggering of receiving.

[0047] The second laser rangefinder 400 and CCD vision camera 500 respectively inspect the welded material strips and interface shape to ensure that the splicing quality meets the requirements; ensure the splicing accuracy of the material strips, improve splicing efficiency, and enhance the reliability of PCBA mounting.

[0048] During welding, the separator 104 in the feeding trough 101 separates and stores multiple material trays 102 to avoid mutual interference. After the material strip is drawn out from the material tray 102, it is positioned by the limiting groove 105 to ensure that the material strip remains stable during the welding process. The round roller 211 on the bracket 201 limits the material strip conveying and reduces the occurrence of the material strip falling out of the limiting groove 105.

[0049] The rodless cylinder 204 drives the slider 205 to move laterally, adjusting the horizontal position of the hot melt block 206. The piston cylinder 210 drives the first T-shaped block 208 to slide along the trapezoidal block 207, thereby driving the hot melt block 206 to move up and down, realizing the docking with the material strip in the limiting groove 105, and completing the welding of the beginning and end of the material strip. The second laser rangefinder 400 and CCD vision camera 500 on both sides of the heat insulation block 209 respectively detect the height change and surface morphology of the welding area, verify whether the welding effect meets the requirements, ensure the accuracy of the welding position, reduce the risk of misalignment, realize the real-time detection of welding quality, and promptly detect problems such as false welding and misalignment, thereby reducing the defect rate.

[0050] When receiving the material, the forward and reverse motor 309 drives the lead screw 308 to rotate, which in turn drives the moving block 302, which is threadedly engaged with the lead screw 308, to slide along the second T-shaped block 301, thereby enabling the mounting head 306 to move along the axial direction of the lead screw 308; the pneumatic slide table 310 drives the push block 304 to slide along the limit block 303; the piston rod of the electric push rod 305 extends and retracts, thereby driving the mounting head 306 to move up and down, thereby enabling the gripping and release of the material strip;

[0051] The placement head 306 moves above the new material tray 102, and the electric push rod 305 descends to allow the placement head 306 to pick up the beginning of the material tape. Then, the placement head 306 moves to the end of the old material tape in the limiting groove 105, and the electric push rod 305 moves again to connect the new and old material tapes, waiting for the hot melt block 206 to complete the welding. This ensures the accuracy of the material tape connection and improves the material receiving efficiency.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic receiving device for preventing mis-component placement in PCBA assembly, characterized in that, include: A placement rack (100) has two material feeding slots (101) on it, and multiple material trays (102) are placed inside the material feeding slots (101). A welding seat (103) is fixedly connected to the placement rack (100), and a welding assembly (200) is provided on the welding seat (103). The welding assembly (200) includes a bracket (201), an inclined block (202) is fixedly connected to the bracket (201), a plurality of first laser rangefinders (203) are mounted on the inclined block (202), a rodless cylinder (204) is mounted on the bracket (201), a slider (205) slides on the rodless cylinder (204), and a hot melt block (206) is provided at one end of the slider (205). The receiving assembly (300) includes a second T-shaped block (301), a movable block (302) is slidably connected to the second T-shaped block (301), a limiting block (303) is fixedly connected to the upper end of the movable block (302), a push block (304) is slidably connected to the limiting block (303), and a mounting head (306) is provided at the lower end of the push block (304). A second laser rangefinder (400) and a CCD vision camera (500) are respectively installed on the upper end of the hot melt block (206) and the outside of the mounting head (306).

2. The PCBA mounting anti-misfit automatic receiving device as described in claim 1, characterized in that: The inner wall of the feeding trough (101) is fixed with a plurality of partition blocks (104), the material tray (102) is wound with a strip of material, and the top surface of the welding seat (103) is provided with a limiting groove (105), and the strip of material is inserted into the limiting groove (105).

3. The PCBA mounting anti-misfit automatic receiving device as described in claim 2, characterized in that: A circular roller (211) is rotatably connected to the bracket (201), a trapezoidal block (207) is fixedly connected to the slider (205), a first T-shaped block (208) slides on the trapezoidal block (207), a heat insulation block (209) is fixedly provided on the side wall of the first T-shaped block (208), a piston cylinder (210) is installed on the upper end of the first T-shaped block (208), and the bottom surface of the piston rod of the piston cylinder (210) is fixedly connected to the top surface of the trapezoidal block (207).

4. The PCBA mounting anti-misfit automatic receiving device as described in claim 3, characterized in that: The bottom surface of the heat insulation block (209) is fixedly connected to the top surface of the hot melt block (206), and the hot melt block (206) is inserted into the limiting groove (105). One of the second laser rangefinders (400) and CCD vision cameras (500) are respectively installed on both sides of the heat insulation block (209).

5. The PCBA mounting anti-misfit automatic receiving device as described in claim 4, characterized in that: The second T-shaped block (301) is fixed on the placement frame (100). An electric push rod (305) is installed on the top surface of the push block (304). The bottom surface of the piston rod of the electric push rod (305) is fixedly connected to the top surface of the mounting head (306). The outer peripheral wall of the piston rod of the electric push rod (305) is slidably connected to the push block (304).

6. The PCBA mounting anti-misfit automatic receiving device as described in claim 5, characterized in that: The second T-shaped block (301) has connecting blocks (307) fixed at both ends, and a lead screw (308) is provided between the two connecting blocks (307). The outer peripheral walls of the two ends of the lead screw (308) are rotatably connected to the connecting blocks (307).

7. The PCBA mounting anti-misfit automatic receiving device as described in claim 6, characterized in that: One of the connecting blocks (307) is equipped with a forward and reverse motor (309), the output shaft of which is coaxially connected to the lead screw (308).

8. The PCBA mounting anti-misfit automatic receiving device as described in claim 7, characterized in that: The side wall of the limiting block (303) is equipped with a pneumatic slide (310), and the slide of the pneumatic slide (310) is fixedly connected to the push block (304).

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