Printing device and control method

Abstract

To achieve further compactness when automatically exchanging an exchangeable component used in a printing device.SOLUTION: An exchange unit is an exchange unit used in a printing device provided with a printing section that performs a printing process of a viscous fluid on a processing target using a screen mask, and comprises: a receiving section that accommodates a storage rack having a plurality of shelf parts for housing frames capable of supporting exchangeable components used in the printing device; a lifting section that lifts and lowers the storage rack between an exchange position where the exchangeable component is exchanged and a liftable position below the exchange position; and a moving section that moves the storage rack between the liftable position in which the storage rack can be lifted and lowered by the lifting section, and a storage position in which the storage rack enters an interior of a housing of the printing device.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] A replacement unit and a printing device are disclosed herein. [Background technology]

[0002] Conventionally, for example, in a printing device that performs a printing process of a viscous fluid on a printing target such as a substrate using a screen mask, there is known a device that automatically replaces replaceable members including the screen mask used in the printing device. For example, Patent Document 1 describes a printing device in which a storage device is installed in front of the printing device and replaceable members are automatically replaced between the printing device and the storage device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2018 / 105016 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the printing device described above, a storage device that stores the screen mask and moves up and down to the replacement position is located in front of the printing device, making it difficult for workers to work in front of the printing device.

[0005] The present disclosure has been made in consideration of such problems, and its main purpose is to provide a replacement unit and a printing device that can be made more compact when automatically replacing replaceable parts used in the printing device. [Means for solving the problem]

[0006] The replaceable unit and printing device disclosed in this specification employ the following means to achieve the above-mentioned main object.

[0007] The replacement unit of the present disclosure comprises: A replacement unit used in a printing device having a printing unit that performs a printing process of a viscous fluid on a processing object using a screen mask, a receiving section for receiving a storage rack having a plurality of shelves for accommodating frames capable of supporting replaceable components used in the printing device; a lifting unit that lifts and lowers the storage rack between a replacement position where the replaceable member is replaced and a liftable position that is lower than the replacement position; a moving unit that moves the storage rack between the liftable position where the storage rack can be lifted and lowered by the lifting unit and a storage position where the storage rack enters inside a housing of the printing device; It is equipped with the following.

[0008] This replacement unit raises and lowers the replaceable parts together with the storage rack, which stores the replaceable parts in multiple shelves, eliminating the need for a lifting mechanism inside the storage rack, allowing the storage rack itself to be compact. Furthermore, when replacement is not being performed on the storage rack, the replacement unit retracts the storage rack into the housing of the printing device, allowing the printing device itself to be made even more compact. In this way, this replacement unit allows for even more compactness when automatically replacing replaceable parts used in the printing device. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic explanatory diagram showing an example of a mounting system 10 and a printing device 11. [Figure 2] FIG. 2 is a schematic explanatory diagram of a storage rack 70. [Figure 3] 4 is an explanatory diagram showing an example of a lifting section 43 and a front-rear moving section 46. FIG. [Figure 4] FIG. 2 is an explanatory diagram showing an example of a printing device 11, a replacement unit 40, and a storage rack 70. [Figure 5] FIG. 4 is an explanatory diagram showing an example of a clamp portion 60a of the fixing portion 60. [Figure 6] 4 is an explanatory diagram showing an example of a stopper portion 60b of the fixing portion 60. FIG. [Figure 7]FIG. 2 is a block diagram showing the electrical connections of the printing device 11. [Figure 8] 10 is an explanatory diagram of a worker W moving a storage rack 70 to a replacement unit 40. FIG. [Figure 9] 10 is a flowchart showing an example of a member replacement processing routine. [Figure 10] FIG. 4 is an explanatory diagram of the positional relationship of each member when the storage rack 70 is moved. [Figure 11] FIG. 2 is a perspective view of the printing device 11 when the storage rack 70 is in the storage position. [Figure 12] FIG. 2 is a perspective view of the printing device 11 when the storage rack 70 is in a position where it can be lifted. [Figure 13] FIG. 10 is a perspective view of the printing device 11 with the storage rack 70 rising. [Figure 14] FIG. 2 is a perspective view of the printing device 11 when the storage rack 70 is in the replacement position. [Figure 15] FIG. 10 is an explanatory diagram of an automatic guided vehicle (18) moving a storage rack (70) to an exchange unit (40). [Figure 16] FIG. 10 is an explanatory diagram showing an example of another accommodation rack 70B. DETAILED DESCRIPTION OF THE INVENTION

[0010] This embodiment will be described below with reference to the drawings. FIG. 1 is a schematic diagram illustrating an example of a mounting system 10 including a printing device 11 according to an embodiment of the present disclosure, and the printing device 11. FIG. 2 is a schematic diagram illustrating a storage rack 70. FIG. 3 is a diagram illustrating an example of a lifting unit 43 and a forward / backward moving unit 46. FIG. 4 is a diagram illustrating an example of a printing device 11, a replacement unit 40, and a storage rack 70. FIG. 5 is a diagram illustrating an example of a clamp unit 60a of a fixing unit 60. FIG. 6 is a diagram illustrating an example of a stopper unit 60b of the fixing unit 60, with FIG. 6A being a perspective view including a partial cross section of an insertion pin 65 and the like, and FIG. 6B being a cross-sectional view seen from above. FIG. 7 is a block diagram illustrating the electrical connections of the printing device 11. The mounting system 10 includes the printing device 11, a print inspection device 12, a mounting device 13, a mounting inspection device 14, a reflow device (not shown), and a management computer (PC) 80. The mounting system 10 is configured as a mounting line in which a plurality of mounting devices 13 that mount components on a board S are arranged downstream of a printing device 11. In this embodiment, the left-right direction (X-axis), front-back direction (Y-axis), and up-down direction (Z-axis) are as shown in FIGS.

[0011] The print inspection device 12 is a device that inspects the state of a viscous fluid such as solder paste printed on the board S by the printing device 11. The mounting device 13 is a device that mounts components on the board S on which the viscous fluid has been printed by the printing device 11. The mounting inspection device 14 is a device that inspects the state of the components mounted on the board S. The reflow device is a device that heats and melts the printed viscous fluid to fix it on the board S. The management PC 80 is a device that manages information about each device in the mounting system 10. This management PC 80 manages the progress status of each device on the production line that performs mounting processing.

[0012] As shown in FIGS. 1 to 7 , the printing device 11 uses a squeegee 25 to push solder on a screen mask M into pattern holes formed in the screen mask M, thereby applying (printing) the solder as a viscous fluid onto a substrate S serving as a processing object below through the pattern holes. Here, examples of the “processing object” include a substrate S on which components are mounted and a three-dimensional base material. Examples of the “viscous fluid” include solder paste, conductive paste, and adhesive. The following description uses the substrate S and solder paste as examples. The screen mask M is fixed inside a frame 29. The frame 29 can hold screen masks M of various sizes and is sized to fit on a shelf 71 of a storage rack 70 (see FIG. 1 ). As shown in FIG. 3 , the printing device 11 includes a print control unit 21, a printing unit 22, a mask operation unit 26, a substrate processing unit 30, a cleaning unit 33, a supply unit 35, a detection unit 37, an operation panel 38, and a replacement unit 40.

[0013] The print control unit 21 is configured as a microprocessor centered on a CPU, and controls the entire printing apparatus 11. The print control unit 21 outputs signals to the printing unit 22, masking unit 26, substrate processing unit 30, cleaning unit 33, supply unit 35, operation panel 38, and replacement unit 40, as well as to a management PC 80 serving as an external device. The print control unit 21 also inputs signals from the printing unit 22, masking unit 26, substrate processing unit 30, cleaning unit 33, supply unit 35, detection unit 37, operation panel 38, and replacement unit 40, as well as from the management PC 80 serving as an external device. The print control unit 21 has a storage unit that stores information about the substrate S to be printed, a print processing program that performs the print processing on the substrate S, and a component replacement processing program that executes the frame 29 replacement process by the replacement unit 27.

[0014] The printing unit 22 is disposed on the upper level of the printing device 11 and is a unit that prints a viscous fluid onto a substrate S using a screen mask M. As shown in FIGS. 1, 4, and 7, the printing unit 22 includes a print head 23, a print moving unit 24, a squeegee lifting unit (not shown), and a squeegee 25. The print moving unit 24 moves the print head 23 in a predetermined printing direction (here, the front-to-rear direction) and includes a guide formed in the front-to-rear direction, a slider that moves along the guide, and a motor that drives the slider. The squeegee 25 is disposed below the print head 23 and is raised and lowered by the squeegee lifting unit. The printing unit 22 has two squeegees 25, one for the front and one for the rear. The mask working unit 26 is disposed between the printing unit 22 and the substrate processing unit 30 in the vertical direction as shown in FIG. 4 and is a unit that fixes and holds the screen mask M. As shown in FIG. 7, the mask working unit 26 includes an exchange unit 27 and a mask fixing unit 28. The replacement unit 27 is a transport rod attached to the print head 23. It is lowered by an air cylinder (not shown) to a position where it contacts the screen mask M, and by rotating, the contact portion that contacts the frame 29 also moves back and forth (see dotted line in Figure 4). The print head 23 and replacement unit 27 engage with the frame 29 between the shelf 71 at a predetermined height of the storage rack 70 and the printing unit 22, moving the frame 29. The mask fixing unit 28 positions the screen mask M and supports and fixes it in a horizontal position. The screen mask M is pushed by the replacement unit 27 and moved back and forth along the guide of the mask working unit 26, and is fixed by the mask fixing unit 28. The substrate processing unit 30, as shown in Figure 4, is disposed below the mask working unit 26 and is a unit that loads the substrate S, positions and supports the loaded substrate S, and brings it into contact with and away from the screen mask M. The substrate processing unit 30 includes a substrate transport unit 31 that transports the substrate S in the left-right direction, a support member 32 that supports the substrate S from below, and a substrate lifting unit that lifts and lowers the entire substrate processing unit 30 and the support member 32. The cleaning unit 33 is disposed between the mask working unit 26 and the substrate processing unit 30 in the vertical direction, and is a unit that performs cleaning processing to clean the back surface of the screen mask M. The cleaning unit 33 has a cleaning member 34 that comes into contact with the screen mask M to clean it.The supply unit 35 is a unit that supplies solder contained in a cartridge 36 onto the screen mask M. The supply unit 35 is disposed in front of the print head 23. The supply unit 35 applies pressure to the cartridge 36 to cause the solder to be ejected from the cartridge 36. The cleaning member 34 and cartridge 36 are consumables and are replaced as necessary. The detection unit 37 is a sensor that detects whether or not a storage rack 70 is present inside the front of the printing device 11. The operation panel 38 is a unit that receives input from the operator W and presents information to the operator W. The operation panel 38 includes a display unit and an operation unit that is a touch panel type and has buttons.

[0015] The storage rack 70 is a container that houses frames 29 capable of supporting screen masks M as replaceable components for the printing process performed in the printing unit 22. As shown in FIGS. 1, 2, and 7, the storage rack 70 includes a rack body 70a, a handle 73, caster members 74, and a support fixing member 75. The rack body 70a includes multiple shelves 71 and an opening 72. The shelves 71 are vertically arranged at predetermined intervals so that frames 29 supporting screen masks M can be placed vertically. The opening 72 communicates with the outside, such as the printing unit 22, and the frames 29 are loaded and unloaded through this opening 72. This storage rack 70 only houses the frames 29 and does not have a drive unit for moving the frames 29 or a drive unit for raising and lowering the frames 29. This storage rack 70 can further simplify its configuration. The shelves 71 are sized to accommodate the frame sizes of various replaceable components. That is, the shelf 71 is sized to accommodate the largest frame 29. The storage rack 70 may have individual shelf sections 71 corresponding to the frame sizes of various interchangeable components, or a single storage rack 70 may have multiple shelf sections 71 all of the same size. In the latter case, multiple storage racks 70 with the same external dimensions may be prepared, and the shelf sections 71 of each storage rack 70 may correspond to one of the frame sizes of various interchangeable components. In this case, the number of types of storage racks 70 increases, but since the external dimensions of the storage racks 70 are the same, even if the corresponding interchangeable component frame sizes are different, each storage rack 70 can share the receiving section 42. The handle 73 is fixed to the upper part of the rack body 70a. The handle 73 is composed of a rod-shaped member that the worker W grasps and a support member that secures the rod-shaped member. The caster section 74 is disposed at the bottom of the rack body 70a. The caster unit 74 is composed of a structure having a space in the center and casters with wheels disposed on the underside of the structure. The worker W holds the handle 73 to move the storage rack 70 (see FIG. 8 described later).

[0016] The support and fixation members 75 are plate-shaped members fixed to the left and right ends of the front lower surface of the rack main body 70a. The support and fixation members 75 are members used when connecting to the replacement unit 40. As shown in FIG. 2 , the support and fixation members 75 have a block portion 76, a receiving portion 77, a locking hole 78, and an insertion hole 79. The block portion 76 is a member to which the hook portion 47 of the replacement unit 40 is connected, and a space is provided between the two blocks into which the hook portion 47 is inserted. The receiving portion 77 is a portion that receives the cam follower 44a disposed on the lifting member 44 of the replacement unit 40, and has an arc-shaped notch. The locking hole 78 is a through-hole into which the clamp lever 61 of the fixing portion 60 disposed on the lifting member 44 of the replacement unit 40 is inserted. The insertion hole 79 is a through-hole into which the insertion pin 65 of the fixing portion 60 disposed on the lifting member 44 of the replacement unit 40 is inserted.

[0017] The replacement unit 40 is used in a printing apparatus 11 equipped with a printing section 22 that performs a viscous fluid printing process on a processing target using a screen mask M. The replacement unit 40 is configured as a device that accepts a storage rack 70 that stores replaceable members such as the screen mask M fixed to a frame 29 and raises and lowers the storage rack 70. The replacement unit 40 has a left unit 41 and a right unit 51 that serve as the lifting and moving unit of the present disclosure. The left unit 41 is disposed on the front left side of the housing of the printing apparatus 11. The right unit 51 is disposed on the front right side of the housing of the printing apparatus 11. As shown in FIG. 4 , the left unit 41 and the right unit 51 are formed such that a length A along the movement direction of the frame 29 is shorter than a length B of the storage rack 70. The replacement unit 40 has a lifting space 49 between the left unit 41 and the right unit 51, through which the storage rack 70 rises and falls. 4, when the storage rack 70 is in the storage position, the replacement unit 40 stores the storage rack 70 on the same surface as the front surface of the main body of the replacement unit 40 or on the inside of this front surface of the main body, and when the storage rack 70 is in the replacement position, the storage rack 70 is supported at a position protruding from the front surface of the main body of the replacement unit 40. Note that the right unit 51 has the same configuration as the left unit 41 except that it faces the left unit 41, and detailed description thereof will be omitted. Note that the right unit 51 includes a receiving section, a lifting section, a lifting member, a cam follower, a lifting drive section, a front-rear moving section, a hook section, a front-rear drive section, etc.

[0018] The left unit 41 includes a receiving section 42, a lifting section 43, a forward / backward moving section 46, and a fixed section 60. The receiving section 42 receives a storage rack 70 having multiple shelves 71 that house frames 29 capable of supporting replaceable components used in the printing device 11, and supports the storage rack 70 from below to move it up and down. The lifting section 43 raises and lowers the storage rack 70 between a replacement position where the replaceable components are replaced and a liftable position below the replacement position. As shown in FIG. 3 , the lifting section 43 includes a lifting member 44 and a lifting drive section 45. The lifting member 44 is a plate-shaped member provided on the surface of the left unit 41 facing the right unit 51. The lifting member 44 is moved up and down along the inner surface of the housing of the left unit 41 by the lifting drive section 45. Cam followers 44a are provided at the front and rear ends of the lifting member 44. The cam follower 44a supports the support fixing member 75 arranged on the storage rack 70 from below, and moves the storage rack 70 up and down in accordance with the up and down movement of the lifting member 44. The lifting drive unit 45 may, for example, have a ball screw with a lifting shaft and a drive motor to move the lifting member 44 up and down, or may use a linear motor to move the lifting member 44 up and down. The lifting unit 43 also has a fixing unit 60 that restricts horizontal movement and / or falling of the storage rack 70 when the storage rack 70 moves to a position where it can be lifted and is in a state where it can be lifted.

[0019] The front-rear movement unit 46 moves the storage rack 70 between a liftable position where the storage rack 70 can be raised and lowered by the lifting unit 43, and a storage position where the storage rack 70 enters the housing of the printing device 11. The front-rear movement unit 46 moves the storage rack 70 in the horizontal direction. The front-rear movement unit 46 includes a hook portion 47 and a front-rear drive unit 48. The hook portion 47 is arranged on the shaft of the front-rear drive unit 48 so as to be able to rise and fall, and is a member that rises relative to and engages with a block portion 76 provided on the storage rack 70. The front-rear drive unit 48 moves the hook portion 47 between the storage position and the liftable position. The front-rear drive unit 48 may have a ball screw and a drive motor to move the hook portion 47 back and forth, or may use a linear motor to move the hook portion 47 back and forth.

[0020] The replacement unit 40 includes a replacement control unit 59. The replacement control unit 59 is configured as a microprocessor centered on a CPU and controls the entire replacement unit 40. The replacement control unit 59 outputs signals to the lift drive unit 45, the front-rear drive unit 48, and the print control unit 21. The replacement control unit 59 also receives signals from the print control unit 21. When the replacement control unit 59 receives a signal indicating that the storage rack 70 has been received by the receiving unit 42, it raises the hook portion 47 and engages the hook portion 47 with the block portion 76. When replacing a replaceable part, the replacement control unit 59 moves the storage rack 70 from the storage position to the liftable position using the front-rear movement unit 46, and then raises the storage rack 70 from the liftable position to the replacement position using the lift unit 43. When replacement of the replaceable part is completed, the replacement control unit 59 lowers the storage rack 70 from the replacement position to the liftable position using the lift unit 43, and then moves it from the liftable position to the storage position using the front-rear movement unit 46.

[0021] The fixing unit 60 is a safety mechanism that prevents the storage rack 70 from unintentionally moving or falling when the storage rack 70 is raised or lowered by the lifting unit 43. The fixing unit 60 includes a clamp unit 60a and a stopper unit 60b. As shown in FIG. 5, the clamp unit 60a has a clamp lever 61 that is inserted into a locking hole 78 formed in the support fixing member 75 of the storage rack 70, and is a mechanism that restricts horizontal movement of the storage rack 70. The clamp unit 60a is disposed on the lifting member 44 and rises and falls together with the lifting member 44. The clamp unit 60a includes the clamp lever 61, a lever rotating unit 62, and an air cylinder 63. The clamp lever 61 has a lever that is inserted into the locking hole 78, a rotating shaft that is fixed to the lifting member 44 and rotates the lever, and an oval hole into which the pin of the lever rotating unit 62 is inserted. The lever rotation part 62 is a member that is directly connected to the rod of the air cylinder 63 and moves linearly. A pin that is inserted into an oval hole is disposed at the tip of the lever rotation part 62. The air cylinder 63 is a drive part that moves the rod up and down using compressed air supplied from an air supply device (not shown). When the rod of the air cylinder 63 rises, the clamp lever 61 of the clamp part 60a rotates around the rotation axis, and the lever is inserted into the locking hole 78. When the rod of the air cylinder 63 descends, the clamp lever 61 of the clamp part 60a rotates around the rotation axis, and the lever is released from the locking hole 78.

[0022] As shown in FIG. 6 , the stopper portion 60b has an insertion pin 65 that is inserted into an insertion hole 79 formed in the support fixing member 75 of the storage rack 70. When the storage rack 70 is raised, the insertion pin 65 is inserted into the insertion hole 79, preventing the storage rack 70 from falling. The stopper portion 60b has the insertion pin 65 and a pin driving portion 66. The pin driving portion 66 inserts the insertion pin 65 into the insertion hole 79 when the storage rack 70 is raised from the liftable position, and retracts the insertion pin 65 to remove it from the insertion hole 79 when the storage rack 70 is in the liftable position. The pin driving portion 66 is composed of a spring 64, a cam follower 67, a guide member 68, and an air cylinder 69. The insertion pin 65, the spring 64, and the cam follower 67 are disposed on the lifting member 44 and rise and fall together with the lifting member 44. On the other hand, the guide member 68 and the air cylinder 69 are disposed in a liftable position on the housing side of the replacement unit 40 and do not move up or down. The spring 64 is a member that constantly biases the insertion pin 65 toward the insertion hole 79. The insertion pin 65 is a member that is inserted into the insertion hole 79 and is a cylindrical member with an internal space. The spring 64 is disposed in the internal space of the insertion pin 65. The cam follower 67 is disposed at the rear end of the insertion pin 65. This cam follower 67 abuts against the wall of the guide member 68 and is guided by the guide member 68 to move up and down together with the lifting member 44. The guide member 68 is a member having a shape in which two L-shaped members face each other in cross section, with the longitudinal direction being the up-down direction. The guide member 68 has L-shaped walls formed in the up-down direction, and the cam follower 67 moves along these walls. The guide member 68 is fixed to the rod of the air cylinder 69. The air cylinder 69 is a drive unit that drives the rod horizontally using compressed air supplied from an air supply device (not shown). When the lifting member 44 is in the liftable position and the rod of the air cylinder 69 is pushed out, the stopper portion 60b causes the insertion pin 65, biased by the spring 64, to protrude from the lifting member 44 (see FIG. 6A). When the lifting member 44 is in the liftable position and the rod of the air cylinder 69 is retracted, the stopper portion 60b retracts the insertion pin 65 via the guide member 68 and the cam follower 67, and does not protrude from the lifting member 44 (see FIG. 6B).Furthermore, when the lifting member 44 rises from the liftable position, the stopper portion 60b releases the cam follower 67 from contact with the guide member 68, and the insertion pin 65 is always inserted into the insertion hole 79 due to the biasing force of the spring 64.

[0023] Next, the printing process of the printer 11 configured as described above will be described. When performing the printing process, the operator W attaches the storage rack 70 to the replacement unit 40. FIG. 8 is an explanatory diagram illustrating the operator W moving the storage rack 70 to the replacement unit 40. After attaching the storage rack 70 to the replacement unit 40, the operator W inputs a command to execute the printing process from the operation panel 38. A printing process routine for executing the printing process is stored in the memory of the printing control unit 21 and is executed after the operator W inputs a command to execute the printing process to the printing control unit 21. When the printing process routine starts, the CPU of the printing control unit 21 first transports, fixes, and lifts the substrate S using the substrate processing unit 30 to bring the substrate S into contact with the screen mask M. At this time, the CPU adjusts the position of the screen mask M using the mask working unit 26 to align the pattern holes with the substrate S. Next, the CPU moves the cartridge 36 over the screen mask M and causes solder to be dispensed onto it. Next, the CPU moves the print head 23 and lowers the squeegee 25 to bring the squeegee 25 into contact with the upper surface of the screen mask M, and then moves it back and forth to print the solder on the board S. In this way, the print control unit 21 performs a printing process including a board transport and fixing process, a solder supply process, and a squeegee moving process to print on the board S. The CPU repeats this printing process while changing the screen mask M until the production process for all types of boards S in the manufacturing plan is completed.

[0024] Next, the operation of the replacement unit 40 to replace the frame 29 will be described. FIG. 9 is a flowchart illustrating an example of a component replacement processing routine executed by the replacement control unit 59 of the replacement unit 40. FIG. 10 is an explanatory diagram illustrating the positional relationship of components such as the lifting member 44 and the support fixing member 75 when the storage rack 70 is moved. FIG. 10A is a diagram illustrating the storage rack 70 in the storage position, FIG. 10B is a diagram illustrating the storage rack 70 connected to the forward / backward moving unit 46, FIG. 10C is a diagram illustrating the storage rack 70 moved to the liftable position, and FIG. 10D is a diagram illustrating the storage rack 70 fixed to the lifting member 44 and lifted. FIG. 11 is a perspective view of the printing device 11 when the storage rack 70 is in the storage position. FIG. 12 is a perspective view of the printing device 11 when the storage rack 70 is in the liftable position. FIG. 13 is a perspective view of the printing device 11 when the storage rack 70 is being lifted. FIG. 14 is a perspective view of the printing device 11 when the storage rack 70 is in the replacement position.

[0025] The component replacement processing routine is stored in the memory of the replacement control unit 59 and is executed after the replacement unit 40 is started up. When this routine is executed, the CPU of the replacement control unit 59 determines whether the storage rack 70 is placed in the storage position based on a detection signal from the detection unit 37 (S100). When the storage rack 70 is placed in the storage position (FIG. 11), the CPU raises the hook portion 47 and connects it to the block portion 76 (S110, FIG. 10B). When the hook portion 47 is inserted into the block portion 76, the forward / backward movement unit 46 becomes able to move the storage rack 70 forward and backward. On the other hand, when the storage rack 70 is not placed in the storage position in S100, the CPU waits until the storage rack 70 is placed in the storage position.

[0026] After S110, the CPU of the replacement control unit 59 determines whether it is time to replace the screen mask M, which is a replaceable member (S120). The timing for replacing the screen mask M can be, for example, after production of a certain type of substrate S has ended and before production of the next type of substrate S begins. When it is time to replace the replaceable member, the CPU controls the forward / backward moving unit 46 to move the hook portion 47 to the liftable position (S130, FIG. 10C). As a result, as shown in FIG. 12, the storage rack 70 is pulled out and becomes liftable. Next, the CPU raises the lifting member 44 and connects it to the support fixing member 75 of the storage rack 70 (S140). When the lifting member 44 is raised to the liftable position, the cam follower 44a enters the receiving portion 77, and the storage rack 70 is connected to the lifting member 44 (FIG. 10D). Next, the CPU drives the air cylinder 63 to perform the clamping process of the clamp unit 60a, and drives the air cylinder 69 to perform the insertion process of the insertion pin 65 of the stopper unit 60b (S150). In the fixing unit 60, the clamp lever 61 is inserted into the locking hole 78, and the insertion pin 65 is inserted into the insertion hole 79, and the storage rack 70 is fixed to the lifting member 44 (FIG. 10D).

[0027] Next, the CPU of the replacement control unit 59 raises the lifting member 44 to the replacement position (S160, FIGS. 13 and 14). At the replacement position, the storage rack 70 is positioned so that the opening 72 faces the replacement door 39 through which the screen mask M can be replaced (FIG. 14). Next, a signal indicating that the loading and unloading process of the screen mask M, which is a replaceable member, can be executed is output to the print control unit 21 (S170). Receiving this signal, the print control unit 21 uses the replacement unit 27 to execute a process of moving the screen mask M to the shelf unit 71. At this time, the CPU of the replacement control unit 59 moves the storage rack 70 to a height where an empty shelf unit 71 is at the replacement position, and then moves the storage rack 70 to a height where the shelf unit 71 containing the next screen mask M to be used is at the replacement position.

[0028] When the loading / unloading process of the screen mask M is completed, the CPU of the replacement control unit 59 lowers the lifting member 44 to the liftable position (S180, FIG. 12), releases the clamping of the clamping portion 60a, and releases the insertion pin 65 of the stopper portion 60b (S190). Then, the CPU moves the hook portion 47 to the storage position (S200). The storage rack 70 then moves to the storage position (FIG. 11). After S200, or if it is not the timing to replace the replaceable member in S120, the CPU determines whether or not a command to disconnect the storage rack 70 has been input by the operator W via the operation panel 38 (S210). If a command to disconnect the storage rack 70 has been input, the CPU lowers the hook portion 47 and disconnects it from the block portion 76 (S220). On the other hand, if a command to disconnect the storage rack 70 has not been input in S210, the CPU executes the process from S120 onward. After S220, the CPU determines whether all processing is complete (S230), and if not, executes processing from S100 onward. On the other hand, if all processing is complete in S230, the CPU ends this routine.

[0029] Here, the correspondence between the components of this embodiment and the components of the present disclosure will be clarified. In this embodiment, the receiving unit 42 corresponds to the receiving unit, the lifting unit 43 corresponds to the lifting unit, the forward / backward moving unit 46 corresponds to the moving unit, and the printing unit 22 corresponds to the printing unit. Furthermore, the block unit 76 corresponds to the block unit, the hook unit 47 corresponds to the hook unit, and the replacement control unit 59 corresponds to the engagement control unit and the movement control unit. Furthermore, the fixing unit 60 corresponds to the fixing unit, the clamp unit 60a corresponds to the clamp unit, the clamp lever 61 corresponds to the clamp lever, the locking hole 78 corresponds to the locking hole, the stopper unit 60b corresponds to the stopper unit, the insertion pin 65 corresponds to the insertion pin, and the insertion hole 79 corresponds to the insertion hole.

[0030] In the replacement unit 40 of the present embodiment described above, the storage rack 70, which stores screen masks M as replaceable members on multiple shelves 71, is raised and lowered together, eliminating the need for a lifting mechanism inside the storage rack 70 and allowing the storage rack itself to be made compact. Furthermore, when replacement is not being performed on the storage rack 70, the replacement unit 40 retracts the storage rack 70 into the housing of the printing device 11, allowing the printing device 11 itself to be made even more compact. In this way, the replacement unit 40 allows for even more compactness when automatically replacing replaceable members used in the printing device 11.

[0031] The forward-rearward moving unit 46 also includes a hook portion 47 that is movably mounted and rises relative to a block portion 76 provided on the storage rack 70 to engage with the block portion 76, and a forward-rearward driving unit 48 that moves the hook portion 47 between a storage position and a liftable position. In this replacement unit 40, the storage rack 70 can be moved by the hook portion 47 rising and engaging with the block portion 76. Also, for example, in the replacement unit 40, when the storage rack 70 moves horizontally and is received by the receiving unit 42, engagement with the forward-rearward moving unit 46 can be easily performed in the received state. Furthermore, in the replacement unit 40, when the replacement control unit 59 receives a signal that the storage rack 70 has been received by the receiving unit 42, the hook portion 47 rises and engages with the block 76. In this replacement unit 40, the replacement control unit 59 can automatically engage the storage rack 70 with the forward-rearward moving unit 46. Furthermore, the forward / backward moving section 46 moves the storage rack 70 in the horizontal direction, and the lifting section 43 has a fixing section 60 that restricts the horizontal movement of the storage rack 70 when the storage rack 70 moves to a position where it can be lifted and is in a state where it can be lifted. In this replacement unit 40, the storage rack 70 is fixed to the lifting section 43 by the fixing section 60, so that after the storage rack 70 has been lifted, it is possible to prevent the storage rack 70 from moving in the horizontal direction or falling.

[0032] The fixing part 60 has at least one of a clamp part 60a having a clamp lever 61 inserted into a locking hole 78 formed in the storage rack 70 to restrict horizontal movement of the storage rack 70, and a stopper part 60b having an insertion pin 65 inserted into an insertion hole 79 formed in the storage rack 70, so that when the storage rack 70 rises, the insertion pin 65 is inserted into the insertion hole 79 to prevent the storage rack 70 from falling. In this replacement unit 40, the clamp part 60a can prevent the storage rack 70 from moving horizontally, and the stopper part 60b can prevent the storage rack 70 from falling. Furthermore, the replacement unit 40 is formed so that the length A along the movement direction of the frame 29 is shorter than the length B of the storage rack 70. Therefore, the size of the device can be made more compact when the storage rack 70 is not in use. Furthermore, when the storage rack 70 is in the storage position, the replacement unit 40 stores the storage rack 70 on the same plane as the front surface of the main body of the replacement unit 40 or inside this front surface of the main body, and when the storage rack 70 is in the replacement position, the storage rack 70 is supported in a position protruding from the front surface of the main body of the replacement unit 40. In this replacement unit 40, when the storage rack 70 is used, the storage rack 70 protrudes from the front surface of the main body, but when the storage rack 70 is in the storage position, the device size can be made particularly compact.

[0033] The replacement unit 40 is composed of a left-side unit 41 disposed on the left side of the housing of the printing device 11 and a right-side unit 51 disposed on the right side of the housing, and a lifting space 49 is provided between the left-side unit 41 and the right-side unit 51, through which the storage rack 70 moves up and down. With this replacement unit 40, the storage rack 70 can be replaced by inserting it into the lifting space 49 formed between the left-side unit 41 and the right-side unit 42, making it easier to replace the storage rack 70. Furthermore, because the storage rack 70 does not have a power source for moving the replaceable parts, the replacement unit 40 allows for a more compact storage rack 70. Furthermore, because the printing device 11 includes the above-described replacement unit 40, similar to the above-described replacement unit 40, a more compact design can be achieved when automatically replacing replaceable parts used in the printing device 11.

[0034] It goes without saying that the replacement unit 40, printing device 11, and mounting system 10 of the present disclosure are not limited to the above-described embodiments, and can be implemented in various forms as long as they fall within the technical scope of the present disclosure.

[0035] For example, in the above-described embodiment, the replacement unit 40 is provided with the hook portion 47 and engages with the block portion 76 of the storage rack 70, but this is not particularly limited to this, and the replacement unit 40 may be connected to the storage rack 70 by a mechanism other than the hook portion 47. Also, in the above-described embodiment, the replacement control unit 59 that raises and lowers the hook portion 47 is provided, but this may be omitted.

[0036] In the above-described embodiment, the replacement unit 40 is provided with the clamp portion 60a and the stopper portion 60b as the fixing portion 60, but this is not particularly limited, and either one of them may be omitted. Also, a fixing portion other than the clamp portion 60a or the stopper portion 60b may be employed. Alternatively, although the replacement unit 40 is provided with the fixing portion 60, this may be omitted.

[0037] In the above-described embodiment, the replacement unit 40 includes a left unit 41 and a right unit 51, and the main bodies of the replacement units 40 are disposed on the left and right sides of the housing of the printing device 11, respectively, but this is not particularly limited to this, and the replacement unit 40 may have an integrated structure as long as there is space to accommodate the storage rack 70. Also, while the replacement unit 40 is disposed in front of the printing device 11, this is not particularly limited, and the replacement unit 40 may be disposed at the rear or side.

[0038] In the above-described embodiment, the receiving section receives the storage rack 70 by supporting the left and right ends of the storage rack 70 from the underside, but is not particularly limited to this as long as it is capable of receiving the storage rack 70, and for example, it may support the entire underside of the storage rack 70, or it may support and receive the storage rack 70 from the side or top of the storage rack 70. Also, in the above-described embodiment, the replacement unit 40 receives the storage rack 70 by lifting the storage rack 70 upward, but is not particularly limited to this as long as it is capable of receiving the storage rack 70.

[0039] In the above-described embodiment, the storage rack 70 is moved by the worker W, but this is not particularly limited, and the storage rack 70 may be moved by an automated guided vehicle 18, for example. FIG. 15 is an explanatory diagram of an example in which the automated guided vehicle 18 moves the storage rack 70 to the exchange unit 40. The automated guided vehicle 18 may move the storage rack 70 by entering the space in the center of the caster unit 74, for example. Note that when the automated guided vehicle 18 moves the storage rack 70, the handle 73 may be omitted.

[0040] In the above-described embodiment, the replacement unit 27 has a rod structure with an abutment portion disposed on the print head 23, but this is not particularly limited to this and the replacement unit 27 may be an independent mechanism disposed outside the print head 23. Also, in the above-described embodiment, the replacement unit 27 is a rod mechanism that engages with the frame 29, but it may also be a conveyor mechanism that moves the frame 29 containing the replaceable parts, for example.

[0041] In the above-described embodiment, the storage rack 70 is provided with shelf portions 71 on which the frames 29 are placed, but is not particularly limited to this as long as it is capable of storing multiple frames 29. FIG. 16 is an explanatory diagram showing an example of another storage rack 70B. This storage rack 70B is provided with shelf portions 71B on the left and right into which the ends of the frames 29 are inserted and supported. In this storage rack 70B, the shelf portions 71 can be further simplified. Also, in the above-described embodiment, the storage rack 70 is provided with caster portions 74, but is not particularly limited to this, and the caster portions 74 may be omitted or may be configured to be removable.

[0042] In the above-described embodiment, the storage rack 70 is described as not having a drive unit for moving the frame 29, but this is not particularly limited to this, and the storage rack 70 may also have a drive unit for moving the frame 29.

[0043] In the above-described embodiment, the replaceable member is described as the screen mask M, but is not limited to this as long as it requires replacement. In addition to the screen mask M, the replaceable member may be one or more of a cartridge 36 that stores a viscous fluid, a squeegee 25, a cleaning member 34 used to clean the screen mask M, and a support member 32 that supports a substrate S as a processing object. Also, while the processing object is the substrate S, it is not particularly limited to this and may be a three-dimensional object as long as the viscous fluid is printed on it. Also, while the viscous fluid is described as solder paste, it may be a conductive paste, adhesive, or the like.

[0044] In the above-described embodiment, the present disclosure is directed to the printing device 11 equipped with the replacement unit 40, but the present disclosure is not particularly limited to this, and may also be directed to the replacement unit 40. If the replacement unit 40 is distributed and connected to the printing device 11, the same effects as those of the above-described embodiment can be achieved. [Industrial Applicability]

[0045] The present disclosure is applicable to the technical field of devices for mounting components. [Explanation of symbols]

[0046] 10 Mounting system, 11 Printing device, 12 Printing inspection device, 13 Mounting device, 14 Mounting inspection device, 18 Automatic guided vehicle, 21 Printing control unit, 22 Printing unit, 23 Print head, 24 Printing movement unit, 25 Squeegee, 26 Mask working unit, 27 Replacement unit, 28 Mask fixing unit, 29 Frame, 30 Substrate processing unit, 31 Substrate transport unit, 32 Support member, 33 Cleaning unit, 34 Cleaning member, 35 Supply unit, 36 Cartridge, 37 Detection unit, 38 Operation panel, 39 Replacement door, 40 Replacement unit, 41 Left unit, 42 Receiving unit, 43 Lifting unit, 44 Lifting member, 44a Cam follower, 45 Lifting drive unit, 46 Front-rear movement unit, 47 Hook unit, 48 Front-rear drive unit, 49 Lifting space, 51 Right unit, 59 Replacement control section, 60 fixing section, 60a clamp section, 60b stopper section, 61 clamp lever, 62 lever rotation section, 63 air cylinder, 64 spring, 65 insertion pin, 66 pin drive section, 67 cam follower, 68 guide member, 69 air cylinder, 70, 70B storage rack, 70a rack body, 71, 71B shelf section, 72 opening, 73 handle, 74 caster section, 75 support fixing member, 76 block section, 77 receiving section, 78 locking hole, 79 insertion hole, 80 management PC, A, B length, M screen mask, S board, W operator.

Claims

1. A replacement unit used in a printing device having a printing unit that performs a printing process of a viscous fluid on a processing object using a screen mask, a receiving section for receiving a storage rack having a plurality of shelves for accommodating frames capable of supporting replaceable components used in the printing device; a lifting unit that lifts and lowers the storage rack between a replacement position where the replaceable member is replaced and a liftable position that is lower than the replacement position; a moving unit that moves the storage rack between the liftable position where the storage rack can be lifted and lowered by the lifting unit and a storage position where the storage rack enters inside a housing of the printing device; Replacement unit with.

2. 2. The replacement unit according to claim 1, wherein the moving unit has a hook portion that is arranged to be able to rise and fall and rises relative to a block portion provided on the storage rack to engage with the block portion, and a front-rear drive unit that moves the hook portion between the storage position and the liftable position.

3. 3. A replacement unit according to claim 1 or 2, an engagement control section that, when receiving a signal that the storage rack has been received by the receiving section, raises the hook section to engage the hook section with the block section;

4. The moving unit moves the storage rack in a horizontal direction, The replacement unit according to any one of claims 1 to 3, wherein the lifting section has a fixing section that restricts the horizontal movement of the storage rack when the storage rack moves to the liftable position and becomes liftable.

5. The replacement unit according to claim 4, wherein the fixing portion has one or more of: a clamp portion having a clamp lever inserted into a locking hole formed in the storage rack and restricting movement of the storage rack in the horizontal direction; and a stopper portion having an insertion pin inserted into an insertion hole formed in the storage rack, the insertion pin being inserted into the insertion hole when the storage rack rises, thereby preventing the storage rack from falling.

6. The replacement unit according to any one of claims 1 to 5, wherein the replacement unit is formed so that the length along the movement direction of the frame is shorter than the size of the storage rack.

7. The replacement unit according to any one of claims 1 to 6, wherein when the storage rack is in the storage position, the storage rack is stored on the same surface as the front surface of the main body of the replacement unit or on the inside of the front surface of the main body, and when the storage rack is in the replacement position, the storage rack is supported at a position protruding from the front surface of the main body of the replacement unit.

8. The replacement unit is configured by a left-side unit arranged on the left side of the housing of the printing device and a right-side unit arranged on the right side of the housing, and has a lifting space between the left-side unit and the right-side unit in which the storage rack moves up and down. The replacement unit described in any one of claims 1 to 7.

9. The replacement unit according to any one of claims 1 to 8, wherein the storage rack does not have a power source for moving the replaceable member.

10. a printing unit that performs printing processing of a viscous fluid on a processing object using a screen mask; A replacement unit according to any one of claims 1 to 9; a movement control unit that moves the storage rack from the storage position to the liftable position by the movement unit when replacing the replaceable member, and lifts the storage rack from the liftable position to the replacement position by the lifting unit; A printing device comprising:

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