Electronic component chip mounter

Abstract

The utility model provides an electronic component chip mounter, which belongs to the technical field of chip mounters, and comprises a main body, the main body is provided with a motion platform, the motion platform comprises an X-axis moving mechanism, a Y-axis moving mechanism and a Z-axis lifting mechanism, the main body is provided with a mounting head and a pneumatic mechanism, and the X-axis moving mechanism, the Y-axis moving mechanism and the Z-axis lifting mechanism are arranged on the main body. The mounting head is installed at the tail end of a Z-axis lifting mechanism of the motion platform, the mounting head is electrically connected with the pneumatic mechanism, a plurality of suction nozzle layers are arranged in the mounting head, the suction nozzle layers are arranged in the vertical direction, each suction nozzle layer is provided with a plurality of vacuum suction nozzles, and the vacuum suction nozzles are distributed in a linear array mode; wherein insulating partition plates are arranged between the suction nozzle layers, and the area of the insulating partition plates is the same as that of the suction nozzle layers, so that the problems of unstable adsorption and inaccurate pasting of electronic elements with different thicknesses and shapes by a traditional chip mounter are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chip mounters, and in particular relates to an electronic component chip mounter. Background Art

[0002] Electronic component placement machines, as an indispensable core equipment in the field of modern electronic manufacturing, are mainly used to accurately and efficiently place various SMT (Surface Mount Technology) electronic components, such as resistors, capacitors, integrated circuits (ICs), diodes, transistors, etc., on the designated pads of printed circuit boards (PCBs) to complete the automated assembly process of electronic products. With the rapid development of the electronics industry, especially the continued growth of microelectronics technology and consumer electronics markets, higher requirements have been placed on the performance, accuracy, efficiency and adaptability of electronic component placement machines.

[0003] Traditional electronic component placement machines are usually composed of a placement head, a feeding system, a motion platform, a visual recognition system, a control system, and other main parts. The placement head is responsible for picking up and placing electronic components, the feeding system provides and transports components through the feeder, the motion platform enables the placement head to move accurately in the three directions of X, Y, and Z, the visual recognition system is used to identify the positioning marks and component positions on the PCB board, and the control system coordinates the work of each part to ensure the accuracy of the placement process.

[0004] Although traditional electronic component placement machines have met the needs of large-scale production to a certain extent, they have exposed the following disadvantages in the face of increasingly diversified, miniaturized, high-density electronic components and more stringent quality requirements: Limited component adaptability: Traditional placement heads are usually equipped with a single or limited type of nozzles, which are difficult to adapt to electronic components of different thicknesses, shapes, and sizes. In particular, for the placement of new special-shaped components, high-density packaging components, and large heat dissipation devices, it is often necessary to replace special placement heads or perform complex manual adjustments, affecting production efficiency and equipment utilization. Poor placement stability: Due to the limitations of the nozzle structure and adsorption method, for some components with special surface characteristics (such as smooth or rough surfaces, fragile or soft materials), traditional adsorption methods may not be able to provide stable adsorption force, resulting in component falling off and position shifting during the placement process, affecting the quality and yield of the placement. Limited placement accuracy: Traditional placement machines may experience placement position deviations under conditions of high-speed movement, vibration, temperature changes, etc. due to the accuracy limitations of the nozzle design, motion control, and positioning systems, as well as the dimensional tolerance and warping of the components themselves. This is especially true when dealing with high-precision, high-density placement tasks, where the bottleneck of placement accuracy is particularly evident. Utility Model Content

[0005] In view of this, the utility model provides an electronic component placement machine, which improves the placement success rate and product quality consistency through the arrangement of a placement head and a pneumatic mechanism.

[0006] The utility model is achieved in this way:

[0007] The utility model provides an electronic component placement machine, comprising a main body, the main body is provided with a motion platform, the motion platform comprises an X-axis moving mechanism, a Y-axis moving mechanism and a Z-axis lifting mechanism, wherein the main body is provided with a placement head and a pneumatic mechanism, the placement head is installed at the end of the Z-axis lifting mechanism of the motion platform, the placement head is electrically connected to the pneumatic mechanism, a plurality of nozzle layers are arranged in a vertical direction, each nozzle layer is provided with a plurality of vacuum nozzles, and the vacuum nozzles are distributed in a linear array manner;

[0008] Wherein, an insulating partition is arranged between each layer of the suction nozzle layer, and the area of ​​the insulating partition is the same as the area of ​​the suction nozzle layer.

[0009] The pneumatic mechanism includes an air source, a pressure regulator, a solenoid valve group and a controller. The air source is connected to the solenoid valve group through the pressure regulator. The solenoid valve group is correspondingly connected to the airway network of the pneumatic multi-layer adsorption placement head. The controller controls the switching state of the solenoid valve group to achieve precise control of the air pressure of each nozzle layer.

[0010] The pneumatic multi-layer adsorption type placement head adjusts the relative height between the head and the electronic component to be placed through the Z-axis lifting mechanism, and realizes the precise positioning of the electronic component through the X-axis moving mechanism and the Y-axis moving mechanism.

[0011] On the basis of the above technical solution, the electronic component placement machine of the utility model can also be improved as follows:

[0012] The openings of the vacuum nozzles are oriented in the same direction, and the center lines of the vacuum nozzle openings of the nozzle layers are parallel to each other, and the openings are oriented toward the electronic components to be attached.

[0013] The pneumatic mechanism is located inside the main body of the placement machine and is indirectly connected to the nozzle layer through internal air and electrical circuits.

[0014] Furthermore, air channels are arranged inside the placement head, and the number of the air channels is the same as the number of the nozzle layers.

[0015] Furthermore, each layer of the nozzle is connected to the pneumatic mechanism through the air channel.

[0016] Furthermore, the airway includes a main airway and a plurality of branch airways, the branch airways are connected to the main airway, the main airway is connected to the pneumatic mechanism, and the branch airways are connected to the nozzle layer respectively.

[0017] The main airway is located in the center of the pneumatic multi-layer adsorption placement head and extends along the longitudinal direction of the placement head, while the branch airways are distributed inside each nozzle layer and distributed along the transverse direction of the nozzle layer. The main airway and the branch airway are in a tree-like structure, with the main airway as the trunk and the branch airway as the branch.

[0018] Furthermore, the number of the branch airways is the same as that of the nozzle layer.

[0019] Furthermore, a solenoid valve is provided on the branch air channel, and the solenoid valve is used to control the opening and closing of the air pressure of each nozzle layer.

[0020] The solenoid valve is controlled by the pneumatic mechanism and is used to independently adjust the air pressure of each nozzle layer.

[0021] The branch airway is further connected to the airway network inside each nozzle layer, and the air pressure of each nozzle layer is controlled by the solenoid valve. The entire airway system is sealed internally to ensure that the gas is transported from the gas source to the nozzle without leakage, thus achieving effective control of the adsorption force.

[0022] Furthermore, the main air channel is arranged at the central axis position of the mounting head, one end of the main air channel is connected to the air source and the pressure regulator, and the other end is communicated with the branch air channel by direct connection.

[0023] Furthermore, the nozzle layer is made of one of metal and high-strength composite material.

[0024] Furthermore, the main body is made of high-strength light alloy or engineering plastic, wherein the high-strength light alloy includes one of magnesium alloy and aluminum alloy, and the engineering plastic includes one of polycarbonate and polyetheretherketone.

[0025] Compared with the prior art, the electronic component placement machine provided by the utility model has the following beneficial effects:

[0026] Greatly improve component adaptability: By designing a pneumatic multi-layer adsorption placement head and configuring layered vacuum nozzles, stable adsorption and precise placement of electronic components of different thicknesses and shapes are achieved. The nozzle layers can be opened and closed independently through air pressure control, easily handling various complex components without frequent replacement of placement heads, significantly improving the compatibility of the equipment with various electronic components and reducing production preparation time and costs;

[0027] Significantly enhance the mounting stability: The pneumatic multi-layer adsorption structure uses the collaborative work of layered suction nozzles and an independent air pressure control mechanism to ensure that suitable adsorption force can be provided for components with various surface characteristics, avoiding the components from falling off or shifting during the adsorption, transfer and placement process, thereby improving the placement success rate and product quality consistency and reducing the defective product rate;

[0028] Significantly improve placement accuracy: By optimizing the design of the pneumatic multi-layer adsorption structure, combined with precise air pressure control and high-precision positioning of the motion platform, the position deviation of the patch caused by factors such as nozzle design, motion control, and component characteristics is effectively reduced. At the same time, the pneumatic adsorption method itself has the characteristics of fast response and fine control, which further enhances the performance in high-speed, high-precision placement tasks and improves the electrical performance and reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 This is an example diagram of an electronic component placement machine;

[0031] Figure 2 A perspective view of a placement head of an electronic component placement machine;

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 10. Main body; 11. Motion platform; 20. Placement head; 21. Airway; 30. Pneumatic mechanism; 31. Nozzle layer. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0035] like Figure 1 , Figure 2As shown, it is a first embodiment of an electronic component placement machine provided by the utility model. In this embodiment, it includes a main body 10, the main body 10 is provided with a motion platform 11, the motion platform 11 includes an X-axis moving mechanism, a Y-axis moving mechanism and a Z-axis lifting mechanism, wherein the main body 10 is provided with a placement head 20 and a pneumatic mechanism 30, the placement head 20 is installed at the end of the Z-axis lifting mechanism of the motion platform 11, the placement head 20 is electrically connected to the pneumatic mechanism 30, a plurality of nozzle layers 31 are arranged in a vertical direction, each nozzle layer 31 is provided with a plurality of vacuum nozzles, and the vacuum nozzles are distributed in a linear array manner;

[0036] An insulating partition is provided between each nozzle layer 31 , and the area of ​​the insulating partition is the same as that of the nozzle layer 31 .

[0037] The pneumatic multi-layer suction placement head receives air pressure control instructions and responds to air pressure changes through an electrical interface with the pneumatic mechanism. The pneumatic mechanism delivers and adjusts the required air pressure to the pneumatic multi-layer suction placement head through the airway network to achieve independent opening and closing of the nozzle layer and control of the suction force.

[0038] The pneumatic mechanism is connected to the airway network inside the pneumatic multi-layer adsorption placement head through the air pipe to form a closed gas transmission channel. Electrically, the pneumatic mechanism is connected to the control system of the placement machine body through a cable to receive control instructions and feedback air pressure status information. At the same time, the electrical connection between the pneumatic mechanism and the pneumatic multi-layer adsorption placement head is used to transmit air pressure control signals, such as the switch instructions of the solenoid valve.

[0039] It should be noted that insulating partitions are also called insulating baffles. They are flat plates made of insulating materials and are mainly used to isolate live parts, limit the range of activities of workers, and prevent people from approaching high-voltage live parts. These insulating materials generally have the following characteristics: good insulation performance, high temperature resistance, corrosion resistance, etc. Common insulating partition materials include the following:

[0040] Glass fiber reinforced plastic: It has the characteristics of light weight, corrosion resistance, high temperature resistance, and good insulation performance. It is widely used in protective equipment in the fields of aviation, aerospace, construction, and transportation.

[0041] Polytetrafluoroethylene: It has the characteristics of corrosion resistance, high temperature resistance, and good insulation performance. It is widely used in chemical, metallurgical, electric power and other fields. The insulating baffle made of it has the characteristics of non-adhesion, corrosion resistance, and chemical corrosion resistance, and is suitable for long-term use in corrosive environments.

[0042] Ceramics: They have the characteristics of high hardness, high temperature resistance, and good insulation performance, and are widely used in the fields of electricity, petroleum, and chemical industry.

[0043] Rubber: It has the characteristics of good flexibility, shock resistance, and good insulation performance, and is widely used in machinery, electrical appliances and other fields.

[0044] In the above technical solution, the openings of the vacuum nozzles are oriented in the same direction, and the center lines of the vacuum nozzle openings of each nozzle layer 31 are parallel to each other, and the openings are oriented toward the electronic components to be mounted.

[0045] The nozzle is embedded or fixed inside the nozzle layer and is directly connected to the air channel in the nozzle layer. The opening and closing action of the nozzle is controlled by the change of air pressure in the nozzle layer, that is, the air pressure adjusted by the pneumatic mechanism is transmitted to the nozzle through the air channel, so that the nozzle generates suction or releases the element.

[0046] Furthermore, in the above technical solution, air channels 21 are provided inside the placement head 20 , and the number of the air channels 21 is the same as the number of the nozzle layers 31 .

[0047] Furthermore, in the above technical solution, each nozzle layer 31 is connected to the pneumatic mechanism 30 through the air channel 21 .

[0048] Furthermore, in the above technical solution, the airway 21 includes a main airway and a plurality of branch airways, the branch airways are connected to the main airway, the main airway is connected to the pneumatic mechanism 30, and the branch airways are connected to the nozzle layer 31 respectively.

[0049] The main airway and the branch airway are connected by transition joints, three-way joints or direct welding. The compressed air delivered by the main airway is distributed to each nozzle layer through the branch airway. The solenoid valve on the branch airway opens or closes according to the command of the pneumatic mechanism to control the air pressure of the corresponding nozzle layer, thereby realizing the independent opening and closing of the nozzle layer and the adjustment of the adsorption force.

[0050] Furthermore, in the above technical solution, the number of branch airways is the same as that of the nozzle layer 31 .

[0051] Furthermore, in the above technical solution, a solenoid valve is provided on the branch airway, and the solenoid valve is used to control the opening and closing of the air pressure of each nozzle layer 31.

[0052] Furthermore, in the above technical solution, the main airway is arranged at the central axis position of the mounting head 20, one end of the main airway is connected to the air source and the pressure regulator, and the other end is communicated with the branch airway by direct connection.

[0053] Furthermore, in the above technical solution, the nozzle layer 31 is made of one of metal and high-strength composite material.

[0054] Metal Materials:

[0055] High-strength steel: such as maraging steel, duplex stainless steel, high-strength low-alloy steel, etc., has high strength and toughness and is suitable for structural parts that bear large loads and vibrations.

[0056] Aluminum alloy: such as aviation aluminum alloy, high-strength aluminum alloy, etc., which are light in weight, high in strength and corrosion-resistant, and are suitable for parts with strict weight requirements, such as mounting head frames, gas system support structures, etc.

[0057] Titanium alloys: such as Ti-6Al-4V, have extremely high strength, corrosion resistance and low density, and are suitable for occasions requiring high performance, lightweight and harsh working environments, such as certain key connectors or parts used in high temperature environments.

[0058] Copper alloys: such as beryllium bronze, chromium zirconium copper, etc., have excellent conductivity and wear resistance, and can be used for components that require excellent conductivity or wear resistance, such as solenoid valves, electrical contact elements, etc.

[0059] High-strength composite materials:

[0060] Carbon fiber reinforced polymer composites (CFRP): have extremely high specific strength and specific modulus, excellent fatigue resistance, and are suitable for structural components that require high strength, low weight and need to withstand complex stresses, such as nozzle layer frames, motion platform support structures, etc.

[0061] Glass fiber reinforced polymer composites (GFRP): high strength, corrosion resistance, and relatively low cost. They are suitable for structural parts that have certain strength requirements but strict cost control, such as certain non-critical supporting structures or shells.

[0062] Metal matrix composites (MMC): such as aluminum-based and titanium-based composites, which contain a metal matrix and reinforcing particles (such as silicon carbide, aluminum oxide, etc.), have excellent mechanical properties, thermal stability and wear resistance, and can be used for components that require high strength, high wear resistance and can work at higher temperatures, such as airway joints, motion platform slides, etc.

[0063] Furthermore, in the above technical solution, the main body 10 is made of high-strength lightweight alloy or engineering plastic, wherein the high-strength lightweight alloy includes one of magnesium alloy and aluminum alloy, and the engineering plastic includes one of polycarbonate and polyetheretherketone.

[0064] High-strength lightweight alloy:

[0065] Magnesium alloys: such as AZ31, AZ91D, etc., have low density, moderate strength, and good damping performance. They are suitable for structural components that require lightweight and good seismic performance, such as the main frame of the placement machine, the motion platform, etc.

[0066] Aluminum alloy (same as above): such as 6061-T6, 7075-T6, etc., with high strength, corrosion resistance, and good processing performance, suitable for main structural parts, support beams, protective covers and other parts that require both strength and lightness.

[0067] Titanium alloy (same as above): In high-end placement machines that require higher strength, corrosion resistance and lightweight requirements, titanium alloy can be used as the preferred material for the main structure, such as key load-bearing components or the skeleton of precision motion mechanisms.

[0068] Engineering Plastics:

[0069] Polycarbonate (PC): It has high transparency, strong impact resistance and good heat resistance. It can be used to make protective covers, windows and other parts that need to observe internal working conditions or withstand certain impacts.

[0070] Polyetheretherketone (PEEK): High temperature resistance, chemical corrosion resistance, excellent mechanical properties, suitable for precision parts in high temperature environments or in contact with corrosive gases and liquids, such as seals, bearing bushings, etc.

[0071] Polyamide (PA, such as nylon 6, nylon 66): high strength, wear resistance, good self-lubrication, suitable for sliding contact surfaces of moving parts, gears, fasteners, etc.

[0072] Polyoxymethylene (POM): high strength, high hardness, good wear resistance, suitable for precision gears, sliding bearings, connectors and other parts that require good mechanical properties.

[0073] Specifically, the principle of the utility model is: pneumatic multi-layer adsorption structure design: the placement head adopts a multi-layer adsorption structure, each layer contains one or more groups of vacuum nozzles, the nozzles are evenly distributed in an array, and the nozzles of each layer can be opened and closed independently through air pressure control. This design makes full use of the spatial dimension to achieve multi-point and multi-level adsorption of electronic components of different thicknesses and shapes, ensuring the stability and placement accuracy of the components during the placement process;

[0074] Air pressure control system: The air pressure control system is electrically connected to the pneumatic multi-layer adsorption placement head. It can open and close the nozzles and adjust the adsorption force by precisely regulating the air pressure of each nozzle layer. The system includes an air source, a pressure regulator, a solenoid valve group, and a controller. Through a closed-loop control strategy, the air pressure of each nozzle layer is adjusted in real time according to the characteristics, size, and position information of the components to be placed, ensuring the best adsorption effect.

[0075] Airway network connected to nozzle layer: The pneumatic multi-layer adsorption placement head is equipped with an airway network inside, and each nozzle layer is connected to the air pressure control system through an independent airway. The main airway delivers compressed air, and the branch airway is connected to the airway in each nozzle layer. The solenoid valve controls the opening and closing of the air pressure of each nozzle layer. This design ensures efficient transmission and precise control of the airflow, so that each nozzle layer can perform adsorption and release operations independently and synchronously.

Claims

1. An electronic component placement machine, comprising a main body (10), wherein the main body (10) is provided with a motion platform (11), wherein the motion platform (11) comprises an X-axis moving mechanism, a Y-axis moving mechanism and a Z-axis lifting mechanism, wherein: The main body (10) is provided with a mounting head (20) and a pneumatic mechanism (30); the mounting head (20) is installed at the end of the Z-axis lifting mechanism of the motion platform (11); the mounting head (20) is electrically connected to the pneumatic mechanism (30); a plurality of nozzle layers (31) are arranged in a vertical direction; each nozzle layer (31) is provided with a plurality of vacuum nozzles, and the vacuum nozzles are distributed in a linear array manner; An insulating partition is provided between each layer of the nozzle layer (31), the area of ​​the insulating partition is the same as the area of ​​the nozzle layer (31), the openings of the vacuum nozzles are oriented in the same direction, and the center lines of the vacuum nozzle openings of each nozzle layer (31) are parallel to each other, and the openings are oriented toward the electronic component to be pasted.

2. An electronic component placement machine according to claim 1, characterized in that: The mounting head (20) is provided with air channels (21) inside, and the number of the air channels (21) is the same as the number of the suction nozzle layers (31).

3. An electronic component placement machine according to claim 2, characterized in that: Each of the suction nozzle layers (31) is connected to the pneumatic mechanism (30) via the air channel (21).

4. An electronic component placement machine according to claim 3, characterized in that: The air channel (21) comprises a main air channel and a plurality of branch air channels, the branch air channels are connected to the main air channel, the main air channel is connected to the pneumatic mechanism (30), and the branch air channels are respectively connected to the nozzle layer (31).

5. An electronic component placement machine according to claim 4, characterized in that: The number of the branch air channels is the same as that of the nozzle layer (31).

6. An electronic component placement machine according to claim 5, characterized in that: The branch air passage is provided with an electromagnetic valve, and the electromagnetic valve is used to control the opening and closing of the air pressure of each nozzle layer (31).

7. An electronic component placement machine according to claim 6, characterized in that: The main air channel is arranged at the central axis position of the mounting head (20), one end of the main air channel is connected to the air source and the pressure regulator, and the other end is communicated with the branch air channel by direct connection.

8. An electronic component placement machine according to claim 7, characterized in that: The nozzle layer (31) is made of one of metal and high-strength composite material.

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