SMT patch-shaped component clamping jig

Abstract

The utility model provides a kind of SMT patch special-shaped component clamping jig, it is related to clamping jig technical field, including movable air guide seat, the inside fixed installation of movable air guide seat has negative pressure air guide pipe group, the top of movable air guide seat is provided with and the negative pressure adsorption pipe of negative pressure air guide pipe group intercommunication is connected.The utility model has the advantages that: the movable air guide seat that can be adjusted in position is arranged inside jig, so that movable air guide seat drives negative pressure adsorption pipe to adjust position according to the structure of special-shaped component, the position of negative pressure adsorption pipe is monitored in real time using laser ranging sensor, so that negative pressure adsorption pipe moves to the below of special-shaped component and and the bottom surface of special-shaped component is closely combined, control negative pressure air guide pipe group forms negative pressure inside negative pressure adsorption pipe through movable air guide seat and special-shaped component is adsorbed and fixed, realize the fixed clamping of special-shaped component, the position of clamping can be adjusted following the structure of special-shaped component, improve the stability of adsorption clamping.

Description

Technical Field

[0001] This utility model relates to the field of clamping fixture technology, and in particular to a clamping fixture for SMT surface mount irregularly shaped components. Background Technology

[0002] Surface Mount Technology (SMT) is one of the core processes in the electronics manufacturing industry. It assembles electronic components by directly soldering surface-mount components (leadless or with short leads) onto pads on the surface of a printed circuit board (PCB). Compared to traditional through-hole (THT) mounting technology, SMT offers advantages such as smaller component size, higher assembly density, higher automation, and higher production efficiency, and is widely used in consumer electronics, automotive electronics, and communication equipment. In SMT production, irregularly shaped components typically refer to surface-mount components with non-standard sizes, irregular shapes, or special pin / structures. Compared to common "standard components" such as chip resistors, capacitors, and ICs, their shape, pin distribution, and soldering requirements are more complex, making clamping them more difficult during production and requiring specialized clamping fixtures for secure fixation.

[0003] However, existing clamping fixtures are not convenient to adjust their clamping position during use, making them unsuitable for clamping and fixing various irregularly shaped components, and thus inconvenient to use. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose an SMT surface mount irregular component clamping fixture to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides an SMT surface mount irregular component clamping fixture, including a fixture base for support. The top of the fixture base is provided with a component placement seat for supporting and positioning the SMT surface mount irregular component. Clamping plates for mechanically clamping the irregular component are fixedly installed at both ends of the component placement seat. An extrusion plate for detecting clamping pressure is fixedly installed inside the clamping plate. The extrusion plate is signal-connected to a control chip for signal processing and automated control. The control chip contains corresponding control circuits and electronic components to ensure stable operation of the automated control. The control chip, installed inside the fixture base, can be connected to related control structures via signal lines. The control chip is signal-connected to a movable air guide seat for position adjustment. A negative pressure air guide tube assembly for conveying gas is fixedly installed inside the movable air guide seat. A negative pressure adsorption tube connected to the negative pressure air guide tube assembly is provided at the top of the movable air guide seat. A laser rangefinder sensor for detecting the position of the irregular component is fixedly installed at the top of the negative pressure adsorption tube.

[0006] Preferably, the fixture base has a groove for fixing the component placement seat inside, movable grooves for guiding the movable air guide seat at both ends, and a guide groove for guiding the clamping plate at the top.

[0007] The above technical solution is adopted: the fixture base (aluminum alloy material) has an internal groove to fix the component placement seat, ensuring the stability of the placement benchmark of the irregular component. The movable slots at both ends guide the movable seat of the movable air guide seat to maintain the linearity of movement. The top guide slot guides the fixed clamping plate of the clamping plate to move horizontally, ensuring the stability of the component placement during clamping. The overall structure is suitable for irregular components of different specifications.

[0008] Preferably, in any of the above embodiments, the clamping plate includes a drive cylinder connected to the control chip signal and a fixed clamping plate for clamping irregularly shaped components. The drive cylinder is fixedly installed on the top of both ends of the fixture base, and the output end of the drive cylinder is fixedly installed with a fixed clamping plate that moves inside the fixture base.

[0009] The above technical solution is adopted: the drive cylinder is driven by the control chip signal, which drives the fixed clamping plate (wear-resistant alloy material) to move along the guide groove to clamp the two sides of the irregular component. The inner surface of the clamping plate fits the contour of the component to avoid scratching the component during clamping. Combined with negative pressure adsorption, "mechanical + pneumatic" dual fixation is achieved, and the clamping stability is improved.

[0010] Preferably, in any of the above embodiments, the extrusion plate includes a pressure sensor connected to a control chip signal and a pressure carrier plate that bears pressure. The pressure sensor is fixedly installed inside the fixed clamping plate, and the detection end of the pressure sensor is fixedly installed with the pressure carrier plate located inside the fixed clamping plate.

[0011] The above technical solution is adopted: the pressure sensor detects the clamping force through the pressure plate (elastic steel plate) and transmits the data to the control chip in real time. When the clamping force exceeds the set range, the control chip immediately adjusts the output pressure of the drive cylinder to ensure that the clamping force is within the safe range and prevent the component from deforming or falling off.

[0012] Preferably, in any of the above embodiments, the movable air guide seat includes a pneumatic telescopic rod connected to a control chip signal and a movable seat for support. The pneumatic telescopic rod is fixedly installed inside the fixture base, and one end of the pneumatic telescopic rod is fixedly installed with a movable seat that moves inside the fixture base.

[0013] The above technical solution is adopted: the pneumatic telescopic rod receives the signal from the control chip, drives the movable seat to move along the movable groove, and drives the negative pressure adsorption tube to accurately align with the bottom of the irregular component. The adjustment response is fast, and it can be adapted to different adsorption points according to the shape of the component (such as irregular bottom surface, convex structure), and the adaptability covers most types of irregular components.

[0014] Preferably, in any of the above embodiments, the negative pressure air guide tube assembly includes a negative pressure pump connected to a control chip signal and an air guide hose for conveying gas. The negative pressure pump is fixedly installed inside the fixture base, and an air guide hose located inside the fixture base is fixedly installed at one end of the negative pressure pump. The end of the air guide hose away from the negative pressure pump is fixedly installed with the movable seat.

[0015] The above technical solution is adopted: the negative pressure pump delivers negative pressure to the movable seat through the air guide hose (negative pressure resistant silicone tube). The hose can bend freely with the movement of the movable seat to ensure stable airflow and small pressure loss in the air guide path, ensuring that the negative pressure adsorption tube generates sufficient adsorption force to meet the fixing requirements of the component.

[0016] Preferably, in any of the above embodiments, the negative pressure adsorption tube moves inside the fixture base, the top end of the negative pressure adsorption tube is provided with a sealing gasket that fits with the irregularly shaped element, the laser rangefinder and the control chip are signal connected and located on one side of the sealing gasket, and the top surface of the negative pressure adsorption tube and the top surface of the fixture base are on the same plane.

[0017] The above technical solution is adopted: the sealing gasket (silicone material) at the top of the negative pressure adsorption tube is attached to the bottom surface of the element to form an air seal. Adsorption force is generated by negative pressure. The laser range sensor detects the distance to the element in real time, determines the position of the movable air guide seat, and the control chip drives the movable air guide seat to adjust, ensuring that the adsorption tube is in close contact with the element and ensuring the adsorption success rate.

[0018] The fixture base secures the component placement seat via a groove, a movable slot guides the movable air guide seat, and a guide slot guides the clamping plate. The driving cylinder of the clamping plate drives the fixed clamping plate to clamp the irregularly shaped component. The pressure sensor of the extrusion plate detects the clamping force via the pressure plate and transmits it to the control chip. The pneumatic telescopic rod of the movable air guide seat drives the movable seat to move. The negative pressure pump of the negative pressure air guide tube assembly delivers negative pressure to the negative pressure adsorption tube through the air guide hose. The laser range sensor detects the distance between the negative pressure adsorption tube and the component. The control chip adjusts the various structures accordingly to make the negative pressure adsorption tube adhere to the component to form negative pressure. This, combined with the clamping plate, achieves stable clamping of the irregularly shaped component. The control chip has built-in multiple clamping parameter templates for irregularly shaped components and can automatically match the optimal clamping scheme through laser range data. When using an unfamiliar component for the first time, custom parameters can be generated through the first trial clamping, improving operational efficiency.

[0019] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0020] 1. An adjustable movable air guide seat is installed inside the fixture that supports and clamps irregularly shaped SMT components. The movable air guide seat moves the negative pressure adsorption tube to adjust its position according to the structure of the irregularly shaped component. The position of the negative pressure adsorption tube is monitored in real time using a laser rangefinder sensor, so that the negative pressure adsorption tube moves to the bottom of the irregularly shaped component and fits tightly against the bottom surface of the component. The negative pressure air guide tube assembly is controlled to form a negative pressure inside the negative pressure adsorption tube through the movable air guide seat to adsorb and fix the irregularly shaped component, thereby achieving fixed clamping of the irregularly shaped component. The clamping position can be adjusted according to the structure of the irregularly shaped component, improving the stability of the adsorption and clamping.

[0021] 2. A clamping plate is set on the top of the clamping fixture to initially clamp the two sides of the irregular component. An extrusion plate is set inside the clamping plate to detect the clamping force of the irregular component. The detection of the clamping force ensures the stability of the initial clamping of the irregular component and improves the safety of clamping.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0025] Figure 2 This is a partial structural schematic diagram according to an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the negative pressure adsorption tube according to an embodiment of the present invention;

[0027] Figure 4 This is a cross-sectional structural diagram of the fixture base according to an embodiment of the present utility model;

[0028] Figure 5 This is a cross-sectional structural diagram of the clamping plate according to an embodiment of the present utility model;

[0029] The components are: 1- Fixture base, 2- Component placement seat, 3- Clamping plate, 31- Drive cylinder, 32- Fixed clamping plate, 4- Extrusion plate, 41- Pressure sensor, 42- Pressure carrier plate, 5- Movable air guide seat, 51- Pneumatic telescopic rod, 52- Movable seat, 6- Negative pressure air guide tube assembly, 61- Negative pressure pump, 62- Air guide hose, 7- Negative pressure adsorption tube, 8- Laser rangefinder sensor. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0031] like Figure 1-5 As shown, an embodiment of this utility model discloses an SMT surface mount irregular component clamping fixture, including a fixture base 1 for support, a component placement seat 2 for supporting and positioning the SMT surface mount irregular component at the top of the fixture base 1, clamping plates 3 for mechanically clamping the irregular component fixedly installed at both ends of the component placement seat 2, an extrusion plate 4 for detecting clamping pressure fixedly installed inside the clamping plate 3, and a control chip for signal processing and automatic control connected to the extrusion plate 4. The control chip is equipped with corresponding control circuits and corresponding electronic components to ensure stable operation of automatic control. The control chip is installed inside the fixture base 1 and can be connected to related control structures through signal lines. The control chip is connected to a movable air guide seat 5 for position adjustment, a negative pressure air guide tube assembly 6 for conveying gas is fixedly installed inside the movable air guide seat 5, a negative pressure adsorption tube 7 connected to the negative pressure air guide tube assembly 6 is provided at the top of the movable air guide seat 5, and a laser range sensor 8 for detecting the position of the irregular component is fixedly installed at the top of the negative pressure adsorption tube 7.

[0032] Preferably, the fixture base 1 has a groove for fixing the component placement seat 2 inside, the two ends of the fixture base 1 have movable grooves for guiding the movable air guide seat 5, and the top of the fixture base 1 has a guide groove for guiding the clamping plate 3.

[0033] The above technical solution is adopted: the fixture base 1 (aluminum alloy material) has an internal groove to fix the component placement seat 2, ensuring the stability of the placement benchmark of the irregular component. The movable slots at both ends guide the movable seat 52 of the movable air guide seat 5 to maintain the linearity of movement. The top guide slot guides the fixed clamping plate 32 of the clamping plate 3 to move horizontally, ensuring the stability of the component placement during clamping. The overall structure is suitable for irregular components of different specifications.

[0034] Preferably, in any of the above solutions, the clamping plate 3 includes a drive cylinder 31 connected to the control chip signal and a fixed clamping plate 32 for clamping irregularly shaped components. The drive cylinder 31 is fixedly installed on the top of both ends of the fixture base 1, and the output end of the drive cylinder 31 is fixedly installed with the fixed clamping plate 32 that moves inside the fixture base 1.

[0035] The above technical solution is adopted: the drive cylinder 31 is driven by the control chip signal, which drives the fixed clamping plate 32 (wear-resistant alloy material) to move along the guide groove to clamp the two sides of the irregular component. The inner surface of the clamping plate fits the outline of the component to avoid scratching the component during clamping. Combined with negative pressure adsorption, "mechanical + pneumatic" dual fixation is achieved, and the clamping stability is improved.

[0036] Preferably, in any of the above schemes, the extrusion plate 4 includes a pressure sensor 41 connected to the control chip signal and a pressure carrier plate 42 that bears pressure. The pressure sensor 41 is fixedly installed inside the fixed clamping plate 32, and the detection end of the pressure sensor 41 is fixedly installed with the pressure carrier plate 42 located inside the fixed clamping plate 32.

[0037] Using the above technical solution: the pressure sensor 41 detects the clamping force through the pressure plate 42 (elastic steel plate) and transmits the data to the control chip in real time. When the clamping force exceeds the set range, the control chip immediately adjusts the output pressure of the drive cylinder 31 to ensure that the clamping force is within the safe range and prevent the component from deforming or falling off.

[0038] Preferably, in any of the above solutions, the movable air guide seat 5 includes a pneumatic telescopic rod 51 connected to the control chip signal and a movable seat 52 for support. The pneumatic telescopic rod 51 is fixedly installed inside the fixture base 1, and one end of the pneumatic telescopic rod 51 is fixedly installed with the movable seat 52 that moves inside the fixture base 1.

[0039] Using the above technical solution: the pneumatic telescopic rod 51 receives the signal from the control chip, drives the movable seat 52 to move along the movable groove, and drives the negative pressure adsorption tube 7 to accurately align with the bottom of the irregular component. The adjustment response is fast, and it can adapt to different adsorption points according to the shape of the component (such as irregular bottom surface, convex structure), and the adaptability covers most types of irregular components.

[0040] Preferably, in any of the above schemes, the negative pressure air guide tube assembly 6 includes a negative pressure pump 61 connected to the control chip signal and an air guide hose 62 for conveying gas. The negative pressure pump 61 is fixedly installed inside the fixture base 1. One end of the negative pressure pump 61 is fixedly installed with the air guide hose 62 located inside the fixture base 1. The end of the air guide hose 62 away from the negative pressure pump 61 is fixedly installed with the movable seat 52.

[0041] The above technical solution is adopted: the negative pressure pump 61 delivers negative pressure to the movable seat 52 through the air guide hose 62 (negative pressure resistant silicone tube). The hose can bend freely with the movement of the movable seat to ensure stable airflow and small pressure loss in the air guide path, so as to ensure that the negative pressure adsorption tube 7 generates sufficient adsorption force to meet the fixing requirements of the component.

[0042] Preferably, in any of the above solutions, the negative pressure adsorption tube 7 moves inside the fixture base 1, and the top of the negative pressure adsorption tube 7 is provided with a sealing gasket that fits with the irregularly shaped element. The laser range sensor 8 and the control chip are connected and located on one side of the sealing gasket. The top surface of the negative pressure adsorption tube 7 and the top surface of the fixture base 1 are on the same plane.

[0043] The above technical solution is adopted: the sealing gasket (silicone material) at the top of the negative pressure adsorption tube 7 is attached to the bottom surface of the element to form an air seal. Adsorption force is generated by negative pressure. The laser range sensor 8 detects the distance to the element in real time and determines the position of the movable air guide seat 5. The control chip drives the movable air guide seat 5 to adjust, ensuring that the adsorption tube is in close contact with the element and ensuring the adsorption success rate.

[0044] The working principle of this utility model for holding irregularly shaped SMT components is as follows:

[0045] The irregularly shaped component is placed on the component placement seat 2. The control chip activates the laser rangefinder 8 to detect the component position and drives the movable air guide seat 5 to move. After the detection value of the laser rangefinder 8 decreases significantly, the negative pressure adsorption tube 7 reaches the optimal adsorption point. The negative pressure pump 61 is activated to generate adsorption force to adsorb the component. The drive cylinder 31 of the clamping plate 3 pushes the fixed clamping plate 32 to close. The extrusion plate 4 provides real-time feedback of the clamping force. The control chip dynamically adjusts to the set value. After the double fixation is completed, the control chip sends a "ready" signal and enters the placement process. After the placement is completed, the reverse operation is performed to release the component.

[0046] Compared with the prior art, the present invention has the following advantages:

[0047] 1. An adjustable movable air guide seat 5 is installed inside the fixture that supports and clamps irregularly shaped SMT components. The movable air guide seat 5 adjusts the position of the negative pressure adsorption tube 7 according to the structure of the irregularly shaped component. The position of the negative pressure adsorption tube 7 is monitored in real time by a laser rangefinder sensor 8, so that the negative pressure adsorption tube 7 moves to the bottom of the irregularly shaped component and fits tightly against the bottom surface of the irregularly shaped component. The negative pressure air guide tube assembly 6 is controlled to form a negative pressure inside the negative pressure adsorption tube 7 through the movable air guide seat 5 to adsorb and fix the irregularly shaped component, thereby achieving fixed clamping of the irregularly shaped component. The clamping position can be adjusted according to the structure of the irregularly shaped component, improving the stability of the adsorption and clamping.

[0048] 2. A clamping plate 3 is set on the top of the clamping fixture to initially clamp the two sides of the irregular component, and an extrusion plate 4 is set inside the clamping plate 3 to detect the clamping force of the irregular component. The detection of the clamping force ensures the stability of the initial clamping of the irregular component and improves the safety of clamping.

Claims

1. A SMT surface mount irregular component clamping fixture, comprising a fixture base (1) for support, wherein the fixture base (1) is provided with a component placement seat (2) for supporting and positioning the SMT surface mount irregular component, characterized in that: The component placement seat (2) is provided with clamping plates (3) on both sides for mechanically clamping irregularly shaped components. The clamping plates (3) are fixedly installed with extrusion plates (4) for detecting clamping pressure. The extrusion plates (4) are connected to a control chip for signal processing and automatic control. The control chip is connected to a movable air guide seat (5) for position adjustment. The movable air guide seat (5) is fixedly installed with a negative pressure air guide tube assembly (6) for conveying gas. The top of the movable air guide seat (5) is provided with a negative pressure adsorption tube (7) connected to the negative pressure air guide tube assembly (6). The top of the negative pressure adsorption tube (7) is fixedly installed with a laser rangefinder sensor (8) for detecting the position of irregularly shaped components.

2. The SMT surface mount irregular component clamping fixture as described in claim 1, characterized in that: The fixture base (1) has a groove for fixing the component placement seat (2) inside. The two ends of the fixture base (1) have movable grooves for guiding the movable air guide seat (5). The top of the fixture base (1) has a guide groove for guiding the clamping plate (3).

3. The SMT surface mount irregular component clamping fixture as described in claim 2, characterized in that: The clamping plate (3) includes a drive cylinder (31) connected to the control chip signal and a fixed clamping plate (32) for clamping irregular components. The drive cylinder (31) is fixedly installed on the top of both ends of the fixture base (1), and the output end of the drive cylinder (31) is fixedly installed with a fixed clamping plate (32) that moves inside the fixture base (1).

4. The SMT surface mount irregular component clamping fixture as described in claim 3, characterized in that: The extrusion plate (4) includes a pressure sensor (41) connected to the control chip signal and a pressure carrier plate (42) that bears the pressure. The pressure sensor (41) is fixedly installed inside the fixed clamping plate (32), and the detection end of the pressure sensor (41) is fixedly installed with the pressure carrier plate (42) located inside the fixed clamping plate (32).

5. The SMT surface mount irregular component clamping fixture as described in claim 4, characterized in that: The movable air guide seat (5) includes a pneumatic telescopic rod (51) connected to the control chip signal and a movable seat (52) for support. The pneumatic telescopic rod (51) is fixedly installed inside the fixture base (1), and one end of the pneumatic telescopic rod (51) is fixedly installed with a movable seat (52) that moves inside the fixture base (1).

6. The SMT surface mount irregular component clamping fixture as described in claim 5, characterized in that: The negative pressure air guide tube assembly (6) includes a negative pressure pump (61) connected to the control chip signal and an air guide hose (62) for conveying gas. The negative pressure pump (61) is fixedly installed inside the fixture base (1). One end of the negative pressure pump (61) is fixedly installed with the air guide hose (62) located inside the fixture base (1). The end of the air guide hose (62) away from the negative pressure pump (61) is fixedly installed with the movable seat (52).

7. The SMT surface mount irregular component clamping fixture as described in claim 6, characterized in that: The negative pressure adsorption tube (7) moves inside the fixture base (1). The top of the negative pressure adsorption tube (7) is provided with a sealing gasket that fits with the irregularly shaped element. The laser range sensor (8) is connected to the control chip and is located on one side of the sealing gasket. The top surface of the negative pressure adsorption tube (7) and the top surface of the fixture base (1) are on the same plane.

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