# US 2019/0380237 A1 · Component mounting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0380237 A1 - Document ID: US20190380237A1 - Status: Published application - Kind: A1 - Application number: 16/487,119 - Filed: 2017-02-23 - Published: 2019-12-12 - Earliest claimed: 2017-02-23 - Assignees: Fuji Corporation - Applicants: Fuji Corporation - Inventors: Shigeto OYAMA; Jun IISAKA; Hideya KURODA - Web page: https://patentgrep.com/patent/US20190380237A1 ## CPC - H05K 13/041: {having multiple pick-up tools} - H05K 13/0812: {the monitoring devices being integrated in the mounting machine, e.g. for monitoring components, leads, component placement} - B25J 15/0616: {with vacuum} - H05K 13/0409: {Sucking devices} - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - B25J: MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES ({manipulators specially adapted for use in surgery A61B34/70; manipulators used in cleaning hollow articles B08B9/04}; manipulators associated with rolling mills B21B39/20; manipulators associated with forging machines B21J13/10; {manipulators associated with picking-up and placing mechanisms B23P19/007}; means for holding wheels or parts thereof B60B30/00; {vehicles with ground-engaging propulsion means, e.g. walking members B62D57/02, B62D57/032; devices for picking-up and depositing articles or materials between conveyors B65G47/90, B65G47/91; manipulators with gripping or holding means for transferring packages B65H67/065}; cranes B66C; {manipulators used in the protection or supervision of pipe-line installations F17D5/00; walking equipment adapted for nuclear steam-generators F22B37/006}; manipulators specially adapted for, or associated with, nuclear reactors G21C; {apparatus used for handling wafers during manufacture or treatment of semiconductor H10P72/50}) ## Abstract A component mounting device includes multiple selector valves corresponding individually to multiple holders disposed on a rotary head and switching between making and breaking communication between a corresponding holder flow path and a negative pressure source, and valve driving devices driving selector valves corresponding to holders, among the multiple holders, located in predetermined revolving positions. The component mounting device executes a negative pressure recovery operation when a suction error has occurred in which the component is not held by suction to the nozzle after suction operation. When a suction error occurs at the nozzle held by the holder, the component mounting device performs the negative pressure recovery operation by waiting for the holder to be rotated to a predetermined revolving position and drives the selector valve corresponding to the holder using the valve driving device to cut off communication between the holder flow path and the negative pressure source. ## Claims ### Claim 1 A component mounting device configured to pick up a component by suction to mount the component on a target object, the component mounting device comprising: a negative pressure source configured to generate a negative pressure; a nozzle configured to pick up the component by suction at a suction port; a rotary head including a rotating body including multiple holders disposed in a circumferential direction, the holders each being configured to hold the nozzle and including a holder flow path formed in an interior space in such a manner as to communicate with the suction port of the nozzle; a rotating device configured to rotate the rotational body so as to revolve the multiple holders in the circumferential direction; multiple lifting and lowering devices configured to individually lift up and lower the holders, among the multiple holders, that are located in multiple predetermined revolving positions; multiple selector valves provided in such a manner as to individually correspond to the multiple holders to make and break communications between the holder flow paths of the corresponding holders and the negative pressure source; valve driving devices configured to drive the selector valves corresponding to the holders, among the multiple holders, that are located in the multiple predetermined revolving positions; and a control device configured to execute, when the component is requested to be picked up by suction, a suction operation in which the nozzle held by the holder located in either one of the multiple predetermined revolving positions is caused to suck the component by causing the lifting and lowering device and the valve driving device that correspond to the holder in question to lower the holder in question and to bring a state of the selector valve corresponding to the holder in question into a state where the selector valve switches to make the holder flow path in the holder in question communicate with the negative pressure source, a suction error determination determining whether a suction error has occurred in which the nozzle held by the holder in question fails to pick up the component by suction after the suction operation is executed, and, when the control device determines that a suction error has occurred, a negative pressure recovery operation in which, when the holder holding the nozzle on which the suction error has occurred is revolved to either of the multiple revolving positions, the valve driving device corresponding to the selector valve that corresponds to the holder in question is caused to bring the selector valve in question into a state where the selector valve switches to breaking communication between the holder flow path in the holder in question and the negative pressure source. ### Claim 2 (depends on 1) The component mounting device according to claim 1, wherein, when a negative pressure from the negative pressure source is less than a predetermined negative pressure, the control device stops executing the suction operation and resumes executing the suction operation when the negative pressure from the negative pressure source is recovered by the negative pressure recovery operation. ### Claim 3 (depends on 2) The component mounting device according to claim 2, wherein the control device updates the predetermined negative pressure based on a result of the suction error determination. ### Claim 4 (depends on 1) The component mounting device according to claim 1, wherein the control device executes the negative pressure recovery operation when a negative pressure from the negative pressure source is less than a predetermined negative pressure. ### Claim 5 (depends on 1) The component mounting device according to claim 1, wherein the control device executes the suction operation in such a manner that the number of holders which do not hold the component by suction and whose corresponding selector valve remains in a state enabling the holder flow path to communicate with the negative pressure source does not exceed a predetermined number. ### Claim 6 (depends on 1) The component mounting device according to claim 1, wherein the multiple lifting and lowering devices comprise a first lifting and lowering device configured to lift up and lower the holder, among the multiple holders, located in a first predetermined revolving position, and a second lifting and lowering device configured to lift up and lower the holder, among the multiple holders, located in a second predetermined revolving position; wherein the valve driving devices comprise a first valve driving device configured to drive the selector valve corresponding to the holder, among the multiple holders, located in the first predetermined revolving position and a second valve driving device configured to drive the selector valve corresponding to the holder, among the multiple holders, located in the second predetermined revolving position; and wherein when the control device determines that the suction error occurs on the nozzle held by the holder located in the first predetermined revolving position after the control device has executed the suction operation using the nozzle held by the holder in question, the control device executes the negative pressure recovery operation when the holder holding the nozzle on which the suction error occurs revolves to arrive at the second predetermined revolving position. ### Claim 7 (depends on 6) The component mounting device according to claim 6, wherein the control device is configured to execute, at approximately the same time, the suction operation, comprising: a first suction operation in which the component is sucked to be held to the nozzle held by the holder located in the first predetermined revolving position by causing the first lifting and lowering device and the first valve driving device to lower the holder in question and bring the selector valve corresponding to the holder in question into a state where the selector valve selects communication between the holder flow path and the negative pressure source; and a second suction operation in which the component is sucked to be held to the nozzle held by the holder located in the second predetermined revolving position by causing the second lifting and lowering device and the second valve driving device to lower the holder in question and bring the selector valve corresponding to the holder in question into a state where the selector valve selects communication between the holder flow path and the negative pressure source.