Anti-displacement chip mounting mechanism of chip mounter
By installing a vision sensor and a limit frame on the pick-and-place machine to prevent displacement during the placement process, the problem of placement accuracy caused by PCB displacement is solved, thereby improving the placement pass rate and reducing the scrap rate of the pick-and-place machine.
Patent Information
- Application Number
- CN202520022008.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-06
AI Technical Summary
When the pick-and-place machine is working, the PCB may be displaced due to factors such as unreasonable fixture design or external vibration, which will reduce the accuracy of the placement position, resulting in component placement errors and product scrap.
An anti-displacement placement mechanism is adopted, including a vision sensor, a lead screw, a moving part, and a limit stop frame. The vision sensor detects the PCB position offset, and the limit stop frame is adjusted by an electric telescopic rod to limit the placement head and ensure placement accuracy.
It improved the overall pass rate of PCB board assembly, reduced the scrap rate of PCB boards, and enhanced the placement accuracy of the pick-and-place machine.
Smart Images
Figure CN223714487U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of chip mounter, in particular to a chip mounter anti-displacement patching mechanism. BACKGROUND
[0002] The chip mounter is a device used in the electronic manufacturing process to accurately mount surface mount devices (SMD) to the designated position of the printed circuit board (PCB). It is one of the core devices of the surface mount technology (SMT) production line, which can realize high-speed and high-precision component mounting, greatly improving the production efficiency and quality of electronic products.
[0003] When the chip mounter is working, the PCB needs to be firmly fixed on the workbench. However, some factors may cause the PCB to displace in the fixed position, for example, the clamps that fix the PCB are not reasonably designed and cannot provide enough clamping force, or are affected by external vibration, impact force of the mounting head, etc. during the mounting process, causing the PCB to slide or shift within the clamp. The displacement of the fixed position of the PCB will change the entire mounting coordinate system. Because the mounting position of the chip mounter is referenced to the fixed position of the PCB, once the PCB displaces, the mounting head will mount the components to the wrong position according to the preset program, resulting in product scrap.
[0004] For the related technology in the above, the inventor believes that the chip mounter has the defect that the PCB in the conveying process may displace when working, therefore, a chip mounter anti-displacement patching mechanism is proposed to solve the above problems. Content of the utility model
[0005] In order to solve the problem that the chip mounter has the defect that the PCB in the conveying process may displace when working, the present application provides a chip mounter anti-displacement patching mechanism.
[0006] The chip mounter anti-displacement patching mechanism provided by the present application adopts the following technical scheme:
[0007] A chip mounter anti-displacement patching mechanism, comprising a device support, a conveying frame movably arranged above the device support, a PCB board piece placed at the top middle part of the conveying frame, a motion control device fixedly installed at the top middle part of the device support, a chip mounter movably arranged on the upper surface of the motion control device, a plurality of mounting heads installed side by side at the bottom end of the chip mounter, a fixing frame fixedly installed at the bottom of the outer surface of the chip mounter, a guide sliding groove formed near each corner on the upper surface of the fixing frame, a lead screw rotatably installed between the inner walls of the guide sliding groove, an active piece movably installed on the outer surface of the lead screw, a damping bearing seat installed at the bottom end of the active piece extending to the outside of the fixing frame, a visual sensor hingedly connected inside the damping bearing seat, and a limiting mechanism provided on the outer surface of the device support for limiting and resisting the chip mounter in movement.
[0008] Preferably, the limiting mechanism comprises an electric telescopic rod, the electric telescopic rod is arranged at the middle part of the bottom end of the equipment support, a supporting plate is installed at the upper surface output end of the electric telescopic rod, a supporting rod is fixedly connected at the top end of the supporting plate near the four corners and passes through the equipment support, and a limiting block is fixedly installed on the upper surface of the supporting rod near the PCB plate.
[0009] Preferably, the movable part is located inside the guide chute, and both upper and lower ends of the movable part extend to the outside of the guide chute.
[0010] Preferably, a threaded hole is formed in the middle part of one side of the movable part, an external thread is formed on the outer surface of the lead screw, and one side of the outer surface of the lead screw is located inside the threaded hole.
[0011] Preferably, the side bottom of the patch equipment is located inside the limiting block, and the plurality of mounting heads are embedded with the limiting block.
[0012] In summary, the present application has the following beneficial technical effects:
[0013] By conveying the PCB plate to the motion control equipment below through the conveying frame, the mounting head suction part is used to patch the PCB plate, and the plurality of visual sensors are used to detect the placement position of the PCB plate. The lead screw is rotated to adjust the visual sensor suitable for PCB plates of different sizes. When the position of the PCB plate is detected to be offset, the limiting block is movably resisted above the PCB plate. Compared with the prior art, the present application has the effect of conveniently protecting the PCB plate in the patch, improves the overall qualification rate of the PCB plate patch, solves the problem that the position offset of the PCB plate affects the patching accuracy of the mounting head, and reduces the overall scrap rate of the PCB plate. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 is a schematic diagram of the overall structure of the application embodiment;
[0015] Figure 2 is a schematic diagram of the limiting block in the application embodiment;
[0016] Figure 3 is a schematic diagram of the patching equipment in the application embodiment;
[0017] Figure 4 is a schematic diagram of the fixed frame in the application embodiment;
[0018] Explanation of reference signs: 1, equipment support; 2, conveying frame; 3, PCB board; 4, motion control equipment; 5, patching equipment; 6, mounting head; 7, fixing frame; 8, guide sliding groove; 9, screw rod; 10, movable piece; 11, damping bearing seat; 12, visual sensor; 13, electric telescopic rod; 14, support plate; 15, support rod; 16, limiting block frame. DETAILED DESCRIPTION
[0019] The following will be described in detail in combination with the accompanying drawings Figures 1-4 The application is further described in detail.
[0020] The embodiment of the application discloses a patching mechanism for preventing displacement of a patching machine. Figures 1-4 A patching mechanism for preventing displacement of a patching machine, comprising an equipment support 1, a conveying frame 2 movably arranged above the equipment support 1, a PCB board 3 placed at the middle of the top end of the conveying frame 2, a motion control equipment 4 fixedly installed at the middle of the top end of the equipment support 1, a patching equipment 5 movably arranged on the upper surface of the motion control equipment 4, a plurality of mounting heads 6 installed side by side at the bottom end of the patching equipment 5, a fixing frame 7 fixedly installed at the bottom of the outer surface of the patching equipment 5, a guide sliding groove 8 formed on the upper surface of the fixing frame 7 near the four corners, a screw rod 9 rotatably installed between the inner walls of the guide sliding groove 8, a movable piece 10 movably installed on the outer surface of the screw rod 9, the movable piece 10 located inside the guide sliding groove 8, the movable piece 10 extending to the outside of the guide sliding groove 8 at the upper and lower ends, the guide sliding groove 8 and the movable piece 10 being matched with each other, a threaded hole formed through the middle of one side of the movable piece 10, an external thread formed on the outer surface of the screw rod 9, the outer surface of the screw rod 9 located inside the threaded hole on one side, the screw rod 9 and the threaded hole being matched with each other, a damping bearing seat 11 installed at the bottom end of the movable piece 10 extending to the outside of the fixing frame 7, a visual sensor 12 hingedly connected inside the damping bearing seat 11, and a limiting mechanism further arranged on the outer surface of the equipment support 1 for limiting and resisting the patching equipment 5 in motion.
[0021] By placing a plurality of PCB boards 3 inside the conveying frame 2, the conveying frame 2 conveys the PCB boards 3 to a specific position below the motion control equipment 4, the mounting heads 6 suck components to patch the PCB boards 3, a plurality of visual sensors 12 are synchronously moved with the patching equipment 5, a plurality of visual sensors 12 synchronously detect a plurality of positions of the PCB boards 3, the visual sensor 12 is adjusted in angle by rotating inside the damping bearing seat 11, the movable piece 10 is moved along the inside of the guide sliding groove 8 by rotating the screw rod 9, the movable piece 10 is adjusted at different positions in the guide sliding groove 8, and the visual sensor 12 is suitable for PCB boards 3 of different sizes.
[0022] Refer to Figure 1 and Figure 2The limiting mechanism comprises an electric telescopic rod 13 arranged at the middle of the bottom end of the equipment support 1, a supporting plate 14 mounted at the upper surface output end of the electric telescopic rod 13, a supporting rod 15 fixedly connected to the equipment support 1 through the top end of the supporting plate 14 close to the four corners, a limiting baffle 16 fixedly installed on the upper surface of the supporting rod 15 close to the upper side of the PCB plate 3, and a plurality of mounting heads 6 embedded in the limiting baffle 16.
[0023] The electric telescopic rod 13 is started to drive the supporting plate 14 to move upward, so that the supporting plate 14 drives the supporting rod 15 and the limiting baffle 16 to move upward synchronously, the limiting baffle 16 is lifted upward by a distance, the mounting heads 6 for mounting the patches are limited and blocked, and the controller is further arranged outside the equipment support 1, the visual sensor 12 and the opening and closing switch of the electric telescopic rod 13 are electrically connected, and the electric telescopic rod 13 is started by the controller when the visual sensor 12 detects that the PCB plate 3 is deviated.
[0024] The implementation principle of the patch displacement prevention patching mechanism of the patching machine is as follows: the plurality of PCB plates 3 are placed in the conveying frame 2, the conveying frame 2 conveys the PCB plates 3 to the specific position below the motion control equipment 4, the mounting heads 6 suck the PCB plates 3 for patching, the plurality of visual sensors 12 move synchronously with the patching equipment 5, the plurality of visual sensors 12 synchronously detect the positions of the plurality of PCB plates 3, the visual sensor 12 rotates along the inside of the damping bearing seat 11 to adjust the detection angle, the movable part 10 is driven by the rotating screw rod 9 to move along the inside of the guide sliding groove 8, the movable part 10 is adjusted at different positions in the guide sliding groove 8, and then the visual sensor 12 is adjusted to be suitable for PCB plates 3 of different sizes, the electric telescopic rod 13 is started to drive the supporting plate 14 to move upward when the visual sensor 12 detects that the PCB plate 3 is deviated, the supporting plate 14 drives the supporting rod 15 and the limiting baffle 16 to move upward synchronously, the limiting baffle 16 is lifted upward by a distance, the mounting heads 6 for mounting the patches are limited and blocked, and the controller is further arranged outside the equipment support 1, the visual sensor 12 and the opening and closing switch of the electric telescopic rod 13 are electrically connected, and the electric telescopic rod 13 is started by the controller when the visual sensor 12 detects that the PCB plate 3 is deviated, the input ends of the power supply of the visual sensor 12 and the electric telescopic rod 13 are electrically connected with the output end of the external power supply; compared with the prior art, the present scheme has the effect of conveniently protecting the PCB plates 3 in the patching, improves the overall qualified rate of the PCB plate 3 patching, solves the problem that the position deviation of the PCB plate 3 affects the patching accuracy of the mounting head 6, and reduces the overall scrap rate of the PCB plate 3.
[0025] Finally should be explained a few points are: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the term "installation", "connected", "connection" should be broad, can be mechanical or electrical connection, but also can be two elements inside the communication, can be directly connected, "up", "down", "left", "right" and so on, only for indicating the relative position relationship, when the absolute position of the described object changes, the relative position relationship may change;
[0026] Second: the utility model discloses the embodiment in the drawing, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of not conflicting, the same embodiment and different embodiments of the utility model can be combined with each other;
[0027] Finally: the above only for the preferred embodiment of the utility model has, and does not for limiting the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.
[0028] The above are the preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application, should be covered within the scope of protection of the present application.
Claims
1. A kind of patch machine anti-displacement patch mechanism, including equipment support (1), conveying frame (2) is movably provided above the equipment support (1), PCB board piece (3) is placed in the top middle part of the conveying frame (2), motion control equipment (4) is fixedly installed in the top middle part of the equipment support (1), patch equipment (5) is movably provided on the upper surface of the motion control equipment (4), a plurality of mounting heads (6) are installed in parallel in the bottom of the patch equipment (5), it is characterized by: The bottom of the patch device (5) is fixedly provided with a fixing frame (7), the upper surface of the fixing frame (7) is provided with a guide sliding groove (8) near each corner, a lead screw (9) is rotatably arranged between the inner walls of the guide sliding groove (8), the outer surface of the lead screw (9) is movably provided with a movable element (10), the bottom end of the movable element (10) extends to the outside of the fixing frame (7) and is provided with a damping bearing seat (11), the damping bearing seat (11) is hingedly provided with a visual sensor (12), and the outer surface of the device support (1) is further provided with a limiting mechanism for limiting the patch device (5) in movement.
2. The anti-displacement pick-and-place mechanism of claim 1, wherein: The limiting mechanism comprises an electric telescopic rod (13), the electric telescopic rod (13) is arranged at the middle of the bottom end of the device support (1), the upper surface of the electric telescopic rod (13) is provided with a support plate (14) at the output end, the top end of the support plate (14) is fixedly provided with a support rod (15) penetrating through the device support (1) near each corner, and the upper surface of the support rod (15) is fixedly provided with a limiting block (16) above the PCB (3).
3. The anti-displacement pick-and-place mechanism of claim 1, wherein: The movable element (10) is located in the guide sliding groove (8), and the upper and lower ends of the movable element (10) extend to the outside of the guide sliding groove (8).
4. The anti-displacement pick-and-place mechanism of claim 1, wherein: A threaded hole is formed in the middle of one side of the movable element (10), an external thread is formed on the outer surface of the lead screw (9), and the outer surface of the lead screw (9) is located in the threaded hole on one side.
5. The anti-displacement pick-and-place mechanism of claim 2, wherein: The bottom of the patch device (5) is located in the limiting block (16), and the plurality of patch heads (6) are embedded in the limiting block (16).