Apparatus and method for correcting adsorption height of component

Abstract

The present invention relates to an apparatus for correcting an adsorption height of a component in a pocket provided in a tray. The apparatus includes a processor. The processor obtains heights of a plurality of pockets for the plurality of pockets from a distance measurement sensor provided on a head of a chip mounter to measure a height of the pocket indicating the height between the pocket of the tray and the head of the chip mounter, predicts the heights of the remaining pockets in the tray on the basis of the heights of the plurality of pockets, and sets the height of each pocket provided in the tray.

Description

Device and method for correcting the height of component suction

[0001] Embodiments of the present invention relate to a device and method for correcting the suction height of a component supplied in a tray form in a chip mounter equipment.

[0002] A chip mounter picks up components from a component supply device and mounts them onto a PCB. Components are supplied to the chip mounter in the form of a tray with multiple pockets, each containing a component.

[0003] When determining the suction height for a tray to suction a part, the user either directly inputs the height or measures the suction height using a laser distance meter, etc. In this case, the measured height is set equally for all pockets in the tray. If the tray is not flat or warped, the height of the part is set differently depending on the location of the pocket, which often results in the part suction not operating smoothly.

[0004] The present invention aims to solve various problems, including the above-described problems, by providing a device and method for correcting the suction height of components supplied in tray form from chip mounter equipment. However, these tasks are exemplary and the scope of the present invention is not limited thereby.

[0005] According to one aspect of the present invention, a device for correcting the suction height of a component in a pocket provided in a tray, the device including a processor, wherein the processor obtains the heights of a plurality of pockets for a plurality of pockets from a distance measuring sensor provided in a head of a chip mounter and measuring the height of the pockets indicating the height between the pockets of the tray and the head of the chip mounter, and predicts the heights of the remaining pockets in the tray based on the heights of the plurality of pockets, thereby setting the height of the pocket for each pocket provided in the tray.

[0006] The above processor can obtain the height of the pocket for each pocket corresponding to the measurement point by setting the pockets corresponding to each corner of the preset tray and the pocket corresponding to the center of the tray as measurement points.

[0007] The above processor can generate a triangle mesh having a triangular plane area with a plurality of measurement points as corners based on the coordinates of the major axis of the tray of each pocket corresponding to the measurement point, the coordinates of the minor axis of the tray, and the height of the pocket.

[0008] The processor can individually set the height of each pocket provided in the tray using the coordinates of the major axis of the tray in the triangular plane area, the coordinates of the minor axis of the tray, and an equation for the height of the pocket.

[0009] The above distance measuring sensor may include a laser displacement measuring device.

[0010] According to one aspect of the present invention, a method for correcting the suction height of a component in a pocket provided in a tray, which is performed by a computing device, is provided, comprising: a step of obtaining a pocket height representing a height between a pocket of the tray and a head of the chip mounter, which is measured using a distance measuring sensor provided in a head of a chip mounter; and a step of predicting the height of the remaining pockets in the tray based on the heights of a plurality of pockets for a plurality of pockets, and setting the pocket height for each pocket provided in the tray.

[0011] The step of obtaining the height of the pocket may include a step of setting pockets corresponding to each corner of the preset tray and a pocket corresponding to the center of the tray as measurement points and obtaining the height of the pocket for each pocket corresponding to the measurement point.

[0012] The step of setting the height of the pocket may include the step of generating a triangle mesh having a triangular plane area with a plurality of measurement points as corners based on the coordinates of the major axis of the tray of each pocket corresponding to the measurement point, the coordinates of the minor axis of the tray, and the height of the pocket.

[0013] The step of setting the height of the pocket may include a step of individually setting the height of the pocket for each pocket provided in the tray using coordinates based on the major axis of the tray in the triangular plane area, coordinates based on the minor axis of the tray, and an equation for the height of the pocket.

[0014] According to one aspect of the present invention, a computer program stored in a recording medium is provided to execute the above-described method using a computer.

[0015] Other aspects, features and advantages other than those described above will become apparent from the following detailed description, claims and drawings for carrying out the invention.

[0016] According to one embodiment of the present invention as described above, a device and method for effectively correcting the suction height of a component supplied in a tray form from a chip mounter equipment can be implemented.

[0017] According to one embodiment of the present invention, the suction height can be individually set for each pocket. Of course, the scope of the present invention is not limited by this effect.

[0018] FIG. 1 is a drawing for explaining the configuration and operation of a component suction height correction device according to one embodiment of the present invention.

[0019] Figure 2 is a flowchart for explaining a component suction height correction method according to one embodiment of the present invention.

[0020] FIG. 3 and FIG. 4 are flowcharts for explaining a method for generating a triangle mesh according to one embodiment of the present invention.

[0021] FIG. 5 is a drawing for explaining a method for setting the absorption height of each pocket according to one embodiment of the present invention.

[0022] The present invention is capable of various modifications and embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, as well as the methods for achieving them, will become clearer with reference to the embodiments described in detail below, along with the drawings. However, the present invention is not limited to the embodiments disclosed below and can be implemented in various forms.

[0023] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals and redundant descriptions thereof will be omitted.

[0024] In the following examples, terms such as "first" and "second" are not used in a limiting sense, but rather to distinguish one component from another. Furthermore, singular expressions include plural expressions unless the context clearly dictates otherwise. Furthermore, terms such as "include" and "have" imply the presence of features or components described in the specification, but do not exclude the possibility that one or more other features or components may be added.

[0025] For convenience of explanation, the sizes of components in the drawings may be exaggerated or reduced. For example, the sizes and thicknesses of each component shown in the drawings are arbitrarily indicated for convenience of explanation, and thus the present invention is not necessarily limited to what is shown.

[0026] In the following embodiments, when a part such as an area, component, sub-part, block or module is said to be on or above another part, this includes not only the case where it is directly on top of the other part, but also the case where another area, component, sub-part, block or module is interposed therebetween. And when it is said that an area, component, sub-part, block or module is connected, this includes not only the case where the areas, components, sub-parts, blocks or modules are directly connected, but also the case where another area, component, sub-part, block or module is interposed therebetween and is indirectly connected therebetween.

[0027] Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings so that a person having ordinary skill in the art to which the present invention pertains can easily practice the present invention.

[0028] FIG. 1 is a drawing for explaining the configuration and operation of a component suction height correction device according to one embodiment of the present invention.

[0029] Referring to FIG. 1, a component suction height correction device (100) according to an embodiment of the present invention may include a memory (110), a processor (120), and a communication module (130). In addition, the component suction height correction device (100) according to an embodiment of the present invention may be connected to a distance measuring sensor (140) via a network to exchange data. However, the present invention is not limited thereto, and the component suction height correction device (100) may further include other components or some components may be omitted. Some components of the component suction height correction device (100) may be separated into multiple devices, or multiple components may be merged into one device.

[0030] The memory (110) is a computer-readable recording medium and may include a non-volatile memory (permanent mass storage device) such as a random access memory (RAM), a read-only memory (ROM), and a disk drive. In addition, a program code for controlling the component suction height correction device (100) may be temporarily or permanently stored in the memory (110).

[0031] The processor (120) controls the overall operation of the component suction height compensation device. For example, the processor (120) may be implemented in a form that optionally includes a processor, an application-specific integrated circuit (ASIC), another chipset, a logic circuit, a register, a communication modem, and / or a data processing device known in the art to perform the above-described operation. For example, the processor (120) may perform basic arithmetic, logic, and input / output operations, and may execute program codes stored in, for example, the memory (110). The processor (120) may store data in the memory (110) or load data stored in the memory (110).

[0032] The distance measurement sensor (140) may be a device mounted on a chip mounter. For example, the distance measurement sensor (140) may be mounted on the head of the chip mounter. For example, the distance measurement sensor (140) according to one embodiment of the present invention may represent a laser displacement measuring device. For example, the distance measurement sensor (140) may represent a device that senses the height of a tray, the height of a pocket, the shape of a tray, etc.

[0033] Additionally, the distance measurement sensor (140) can measure the height between the pocket of the tray and the head of the chip mounter. For example, the height between the pocket of the tray and the head of the chip mounter can be expressed as the height of the pocket. For example, the distance measurement sensor (140) can be connected to the processor (120) via a network and transmit data on the height of the pocket to the processor (120).

[0034] The processor (120) can correct the suction height of the components within the pockets provided in the tray. For example, the processor (120) can obtain the heights of multiple pockets for multiple pockets from a distance measurement sensor, predict the heights of the remaining pockets within the tray based on the heights of the multiple pockets, and set the height of each pocket provided in the tray.

[0035] A processor (120) according to one embodiment of the present invention can obtain the height of a pocket for each pocket corresponding to a measurement point by setting pockets corresponding to each corner of a preset tray and a pocket corresponding to the center of the tray as measurement points.

[0036] A processor (120) according to one embodiment of the present invention can generate a triangle mesh having a triangular plane area with a plurality of measurement points as corners based on the coordinates of the long axis of the tray of each pocket corresponding to the measurement point, the coordinates of the short axis of the tray, and the height of the pocket.

[0037] A processor (120) according to one embodiment of the present invention can individually set the height of a pocket for each pocket provided in a tray using coordinates based on the major axis of the tray in a triangular plane area, coordinates based on the minor axis of the tray, and an equation for the height of the pocket.

[0038] The communication module (130) may provide a function for communicating with an external server via a network. For example, a request generated by the processor (120) of the component suction height correction device (100) according to a program code stored in a recording device such as a memory (110) may be transmitted to an external server via a network under the control of the communication module (130). Conversely, control signals, commands, contents, files, etc. provided under the control of the processor of the external server may be received by the component suction height correction device (100) via the communication module (130) via a network. For example, control signals or commands from an external server received via the communication module (130) may be transmitted to the processor (120) or the memory (110).

[0039] The communication method is not limited, and may include not only a communication method that utilizes a communication network that the network may include (e.g., a mobile communication network, a wired Internet, a wireless Internet, a broadcasting network), but also short-range wireless communication between devices. For example, the network may include any one or more of a personal area network (PAN), a local area network (LAN), a campus area network (CAN), a metropolitan area network (MAN), a wide area network (WAN), a broadband network (BBN), and the Internet. In addition, the network may include any one or more of a network topology including, but not limited to, a bus network, a star network, a ring network, a mesh network, a star-bus network, a tree, or a hierarchical network.

[0040] Additionally, the communication module (130) can communicate with an external server via a network. The communication method is not limited, but the network may be a short-range wireless communication network. For example, the network may be a Bluetooth, BLE (Bluetooth Low Energy), or Wi-Fi communication network.

[0041] In addition, the component suction height correction device (100) according to the present invention may include an input / output interface. The input / output interface may be a means for interfacing with an input / output device. For example, the input device may include a device such as a keyboard or a mouse, and the output device may include a device such as a display for displaying a communication session of an application. As another example, the input / output interface may be a means for interfacing with a device that integrates input and output functions, such as a touchscreen. As a more specific example, the processor (120) of the component suction height correction device (100) may display a service screen or content configured using data provided by an external server on the display through the input / output interface when processing commands of a computer program loaded in the memory (110).

[0042] Additionally, in other embodiments, the component suction height compensation device (100) may include more components than those of FIG. 1. For example, it may be implemented to include at least some of the input / output devices described above, or may further include other components such as a battery and charging device for supplying power to internal components, various sensors, a database, etc.

[0043] The processor (120) can control the component suction height correction device (100) to perform steps included in the component suction height correction method of FIG. 2. For example, the processor (120) can be implemented to execute instructions according to the code of the operating system included in the memory (110) and the code of at least one program. Here, the components of the processor (120) can be expressions of different functions of the processor (120) performed by the processor (120) according to instructions provided by the program code stored in the component suction height correction device (100). The specific operation of the processor (120) will be described with reference to the flowchart of the component suction height correction method of FIG. 2.

[0044] Figure 2 is a flowchart for explaining a component suction height correction method according to one embodiment of the present invention.

[0045] Referring to FIG. 2, in step S110, the processor (120) can obtain the height of the pocket, which represents the height between the pocket of the measured tray and the head of the chip mounter, using a distance measuring sensor provided in the head of the chip mounter.

[0046] For example, the processor (120) can set pockets corresponding to each corner of a preset tray and a pocket corresponding to the center of the tray as measurement points, and obtain the height of the pocket for each pocket corresponding to the measurement point.

[0047] In step S120, the processor (120) can predict the height of the remaining pockets in the tray based on the heights of the plurality of pockets for the plurality of pockets, and set the height of the pocket for each pocket provided in the tray.

[0048] For example, the processor (120) can generate a triangle mesh having a triangular plane area with a plurality of measurement points as corners based on the coordinates of the major axis of the tray of each pocket corresponding to the measurement point, the coordinates of the minor axis of the tray, and the height of the pocket.

[0049] For example, the processor (120) can individually set the height of the pocket for each pocket provided in the tray using the coordinates of the major axis of the tray in the triangular plane area, the coordinates of the minor axis of the tray, and the equation for the height of the pocket.

[0050] Figures 3 and 4 are flowcharts illustrating a method for generating a triangle mesh according to one embodiment of the present invention. Figure 5 is a diagram illustrating a method for setting the absorption height of each pocket according to one embodiment of the present invention.

[0051] First, referring to FIG. 3, an example drawing of measuring the height of a pocket for five measurement points according to one embodiment of the present invention is illustrated. Also, referring to FIG. 4, an example drawing of generating a triangle mesh using five measurement points according to one embodiment of the present invention is illustrated.

[0052] For example, a tray (300) may be provided with a plurality of pockets (310). The processor (120) according to one embodiment of the present invention may obtain the heights of the pockets at each corner of the tray (300) and the pocket at the center of the tray (300). For example, as illustrated in FIG. 3, the processor (120) may obtain the heights of five pockets on the upper surface of the tray. For example, starting with the height of the pocket (320) at the lower left corner of the tray (300), the heights of the pockets at each corner of the tray (300) and the pocket at the center of the tray (300) may be obtained. In this case, the processor (120) may obtain the height of the pocket using the center of each pocket as a measurement point.

[0053] Referring to FIGS. 3 and 4 together, the processor (120) according to one embodiment of the present invention can generate a triangle mesh having a triangular planar area with a plurality of measurement points as corners based on the coordinates of the major axis of the tray of each pocket corresponding to the measurement point, the coordinates of the minor axis of the tray, and the height of the pocket. For example, as illustrated in FIG. 4, in a three-dimensional space having a rectangular coordinate system of XYZ axes based on the major axis of the tray (300), the minor axis of the tray (300), and the height of the pocket, a triangle mesh having a triangular planar area (400) with a measurement point of the lower left corner of the tray (300), a measurement point of the center of the tray (300), and a measurement point of the lower right corner of the tray (300) as corners of the triangle can be generated. For example, when a triangle mesh is generated using five measurement points, four triangular planar areas can be generated.

[0054] Referring to FIG. 5, a drawing is provided showing an example of an adsorption height applied to each pocket according to one embodiment of the present invention. For example, the value indicating the height of the pocket in FIG. 5 may represent the distance that the head of the chip mounter moves to adsorb a component when the height of the upper surface of the PCB is set to a reference height of 0.

[0055] A processor (120) according to one embodiment of the present invention can individually set the height of a pocket for each pocket provided in a tray using coordinates based on the major axis of the tray in a triangular plane area, coordinates based on the minor axis of the tray, and an equation for the height of the pocket.

[0056] For example, as illustrated in FIG. 5, the first measurement point at the lower left corner of the tray (300) may be a measurement point having a coordinate value of 19 based on the major axis of the tray, a coordinate value of 7 based on the minor axis of the tray, and a height value of -1.042 of the pocket. In addition, the second measurement point at the upper left corner of the tray (300) may be a measurement point having a coordinate value of 19 based on the major axis of the tray, a coordinate value of 0 based on the minor axis of the tray, and a height value of -0.729 of the pocket. In addition, the third measurement point at the center of the tray (300) may be a measurement point having a coordinate value of 10 based on the major axis of the tray, a coordinate value of 3 based on the minor axis of the tray, and a height value of -0.503 of the pocket. In addition, the fourth measurement point at the upper right corner of the tray (300) may be a measurement point having a coordinate value of 0 based on the major axis of the tray, a coordinate value of 0 based on the minor axis of the tray, and a height value of -0.817 of the pocket. Additionally, the fifth measurement point at the lower right corner of the tray (300) may be a measurement point having a coordinate value of 0 based on the long axis of the tray, a coordinate value of 7 based on the short axis of the tray, and a height value of -1.038 of the pocket.

[0057] According to one embodiment of the present invention, the processor (120) can individually set the height of each pocket provided in the tray by using an equation for a triangular plane area generated based on five measurement points: a first measurement point at the lower left corner of the tray (300), a second measurement point at the upper left corner of the tray (300), a third measurement point at the center of the tray (300), a fourth measurement point at the upper right corner of the tray (300), and a fifth measurement point at the lower right corner of the tray (300). For example, as shown in FIG. 5, the height of the pocket can be individually set for the remaining pockets except for the pockets corresponding to the five measurement points. For example, the height of the pocket for each pocket can be predicted by using the coordinates of the major axis of each pocket and the coordinates of the minor axis of each pocket for the plane equation for the triangular plane area.

[0058] According to the present invention, the height of each pocket within the tray can be differentiated using a distance sensor installed in the upper head, regardless of the horizontality of the tray. This is a point of differentiation from the conventional technology that adjusts the horizontality of the tray using the lower elevator. Specifically, according to the present invention, the height of each pocket can be calculated based on a plurality of measurement points. This is a point of differentiation from the conventional technology of one-point measurement using a fiducial mark correction method.

[0059] The devices and / or systems described above may be implemented as hardware components, software components, and / or a combination of hardware components and software components. The devices and components described in the embodiments may be implemented using one or more general-purpose computers or special-purpose computers, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing instructions and responding to them. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. In addition, the processing device may access, store, manipulate, process, and generate data in response to the execution of the software. For ease of understanding, the processing device is sometimes described as being used alone; however, one of ordinary skill in the art will recognize that the processing device may include multiple processing elements and / or multiple types of processing elements. For example, a processing unit may include multiple processors, or a processor and a controller. Other processing configurations, such as parallel processors, are also possible.

[0060] Software may include computer programs, codes, instructions, or a combination of one or more of these, which may configure a processing device to perform a desired operation or may, independently or collectively, command the processing device. The software and / or data may be permanently or temporarily embodied in any type of machine, component, physical device, virtual equipment, computer storage media or device, or transmitted signal waves, for interpretation by the processing device or for providing instructions or data to the processing device. The software may also be distributed over networked computer systems and stored or executed in a distributed manner. The software and data may be stored on one or more computer-readable recording media.

[0061] The method according to the embodiment may be implemented in the form of program commands that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program commands, data files, data structures, etc., alone or in combination. The program commands recorded on the medium may be those specially designed and configured for the embodiment or may be those known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and hardware devices specially configured to store and execute program commands, such as ROMs, RAMs, and flash memories. Examples of the program commands include not only machine language codes generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter, etc. The above-mentioned hardware devices may be configured to operate as one or more software modules to perform the operations of the embodiment, and vice versa.

[0062] Although the embodiments described above have been described by way of limited examples and drawings, those skilled in the art will appreciate that various modifications and variations can be made based on the above teachings. For example, appropriate results can still be achieved even if the described techniques are performed in a different order than described, and / or components of the described systems, structures, devices, circuits, etc. are combined or combined in a different manner than described, or are replaced or substituted with other components or equivalents.

[0063] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims described below.

Claims

1. In a device for correcting the suction height of a part in a pocket provided in a tray, Contains a processor, The above processor obtains the heights of a plurality of pockets for a plurality of pockets from a distance measuring sensor which is provided on the head of the chip mounter and measures the height of the pockets indicating the height between the pockets of the tray and the head of the chip mounter, A component suction height correction device that predicts the height of the remaining pockets in the tray based on the heights of the plurality of pockets and sets the height of the pocket for each pocket provided in the tray.

2. In paragraph 1, The above processor is a component suction height correction device that sets pockets corresponding to each corner of the preset tray and a pocket corresponding to the center of the tray as measurement points and obtains the height of the pocket for each pocket corresponding to the measurement point.

3. In paragraph 2, The above processor is a component suction height correction device that generates a triangle mesh having a triangular plane area with a plurality of measurement points as corners based on the coordinates of the long axis of the tray of each pocket corresponding to the measurement point, the coordinates of the short axis of the tray, and the height of the pocket.

4. In paragraph 3, The above processor is a component suction height correction device that individually sets the height of the pocket for each pocket provided in the tray using the coordinates of the major axis of the tray in the triangular plane area, the coordinates of the minor axis of the tray, and an equation for the height of the pocket.

5. In paragraph 1, The above distance measuring sensor is a component suction height compensation device including a laser displacement measuring device.

6. In paragraph 1, The above processor is a component suction height correction device that sets a plurality of pockets as a plurality of measurement points and calculates a pocket height by differentiating the pocket height for each pocket based on the pocket height for the plurality of measurement points.

7. A method for correcting the suction height of a part in a pocket provided in a tray performed by a computing device, A step of obtaining the height of the pocket, which represents the height between the pocket of the tray and the head of the chip mounter, using a distance measuring sensor provided in the head of the chip mounter; and A step of predicting the height of the remaining pockets in the tray based on the heights of the plurality of pockets for the plurality of pockets, and setting the height of the pocket for each pocket provided in the tray; A method for correcting the height of a component suction, comprising:

8. In paragraph 7, A method for correcting the height of a component suction, wherein the step of obtaining the height of the pocket comprises the step of setting pockets corresponding to each corner of the preset tray and the pocket corresponding to the center of the tray as measurement points and obtaining the height of the pocket for each pocket corresponding to the measurement point.

9. In paragraph 8, A method for correcting the height of a component suction cup, wherein the step of setting the height of the pocket comprises the step of generating a triangle mesh having a triangular plane area having a plurality of measurement points as corners based on the coordinates of the major axis of the tray of each pocket corresponding to the measurement point, the coordinates of the minor axis of the tray, and the height of the pocket.

10. In paragraph 9, A method for correcting the height of a part suction cup, wherein the step of setting the height of the pocket includes the step of individually setting the height of the pocket for each pocket provided in the tray using the coordinates of the major axis of the tray in the triangular plane area, the coordinates of the minor axis of the tray, and an equation for the height of the pocket.

11. In paragraph 7, The step of obtaining the height of the pocket includes the step of setting a plurality of pockets as a plurality of measurement points and obtaining the height of the pocket for the plurality of measurement points. A method for correcting the height of a component suction, wherein the step of setting the height of the pocket includes a step of calculating the height of the pocket by differentiating the height of the pocket for each pocket based on the height of the pocket for a plurality of measurement points.

12. A computer program stored on a recording medium for executing the method of any one of claims 7 to 11 using a computing device.

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