Printing system

Abstract

This improves the reliability of the loading and unloading of the support frame between the storage rack and the printing device. [Solution] The printing system comprises a printing device, a storage rack having multiple shelves capable of accommodating support frames for supporting replacement members, the support frames being movable between the printing device and the shelves while facing the printing device, and having an opening on a side parallel to the direction of movement of the support frames, a feeding unit having a feeding unit that can feed the support frames in and out in the direction of movement while they are abutting against the support frames in the storage rack, and a moving unit that moves the feeding unit in and out of the storage rack through the opening, and a replacement control unit having a position sensor that detects the state in which the feeding unit is inserted into the storage rack, and capable of detecting that there are no support frames in the shelves based on the detection signal from the position sensor.

Description

Technical Field

[0001] This specification discloses a printing system.

Background Art

[0002] Conventionally, a replaceable printing system is known in which an accommodating device having a plurality of accommodating portions for accommodating a support frame and a printing device place a replacement member (such as a screen mask) on the support frame (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in such a printing system, it is desirable to send out the support frame to the printing device after confirming that there is a support frame in the accommodating portion, or to send in the support frame from the printing device after confirming that there is an empty space in the accommodating portion. However, in the printing system described in Patent Document 1, detection of the presence or absence of the support frame in the accommodating portion has not been considered. Therefore, there is a risk of trying to send out the support frame to the printing device when there is no support frame in the accommodating portion, or trying to send in the support frame from the printing device when there is no empty space in the accommodating portion.

[0005] The main object of the present disclosure is to enable more reliable sending in and out of the support frame between the storage rack and the printing device.

Means for Solving the Problems

[0006] The first printing system of the present disclosure is a printing device, A storage rack is provided with multiple shelves capable of accommodating support frames for supporting replacement members, the support frames being movable between the printing device and the shelves when facing the printing device, and having an opening on the side parallel to the direction of movement of the support frames. A feeding device having a feeding section that can move the support frame in and out in the direction of movement while it is abutting against the support frame in the storage rack, and a moving section that moves the feeding section in and out of the storage rack through the opening, A first detection unit has a first sensor that detects the insertion state of the feeding unit into the storage rack, and can detect that there is no support frame in the shelf based on the detection signal of the first sensor, The gist of it is that it is equipped with the following features.

[0007] In this first printing system, it is possible to detect whether there is no support frame in the shelf based on the detection signal from the first sensor. Therefore, it is possible to prevent attempts to send a support frame to the printing device when there is no support frame in the shelf, or attempts to send a support frame from the printing device when there is a support frame in the shelf. Thus, the sending and receiving of support frames between the storage rack and the printing device can be performed more reliably.

[0008] The second printing system of this disclosure is Printing device and A storage rack is provided with multiple shelves capable of accommodating support frames for replacement components, and the support frames are movable between the printing device and the shelves when facing the printing device. With the storage rack facing the printing device, it has a pair of rack support members capable of supporting the lower surface of the storage rack from both sides in a direction perpendicular to the direction of movement and vertical direction of the support frame, and a lifting device for raising and lowering the rack support members, Equipped with, The support frame is provided with a plurality of holding parts, each capable of holding interchangeable members of different sizes, arranged in a line along the direction of movement. The storage rack is provided with weights such that, when the storage rack is facing the printing device, the center of gravity of the storage rack is located closer to the printing device than the position where it is supported by the rack support member. This is the gist of it.

[0009] In this second printing system, weights are provided in the storage racks so that the center of gravity of the storage racks is located closer to the printing device than the position where they are supported by the rack support members. Therefore, when the storage racks are raised and lowered together with the rack support members, the storage racks are less likely to tilt away from the printing device. This is particularly effective when a larger replacement part is held in the holding part on the upstream side of the support frame's movement direction than the replacement part held in the holding part on the downstream side of the support frame's movement direction. In that case, the center of gravity of the storage racks is more likely to be biased away from the printing device relative to the rack support members compared to when replacement parts of the same size are held in both the downstream and upstream holding parts, or when replacement parts are held only in the holding part on the downstream side of the movement direction.

[0010] The third printing system in this disclosure is Printing device and A storage rack is provided with multiple shelves capable of accommodating support frames for supporting replacement members, the support frames being movable between the printing device and the shelves when facing the printing device, and having an opening on the side parallel to the direction of movement of the support frames. A feeding device comprising: a feeding section that includes one or more urethane drive rolls, the drive rolls being driven while abutting against the support frame in the storage rack, thereby enabling the support frame to be fed in and out in the direction of movement; and a moving section that moves the feeding section in and out of the storage rack through the opening. The gist of it is that it is equipped with the following features.

[0011] In this third printing system, a urethane drive roll is driven while abutting against the support frame within the storage rack, thereby moving the support frame in and out. Therefore, compared to cases where the support frame is moved in and out by the frictional force of a rubber belt, wear particles are less likely to enter the inside of the printing device. This is because urethane rolls are less prone to wear than rubber belts, etc.

[0012] The fourth printing system of this disclosure is Printing device and A storage rack is provided with multiple shelves capable of accommodating support frames for supporting replacement members, the support frames being movable between the printing device and the shelves when facing the printing device, and having an opening on the side parallel to the direction of movement of the support frames. A feeding device having a feeding section that can feed the support frame in and out in the direction of movement, and a moving section that moves the feeding section in and out of the storage rack through the opening, Equipped with, The feed unit comprises one or more drive rolls that are driven while abutting against a support frame within the storage rack, and a belt provided at a location that does not contact the support frame for transmitting power to the plurality of drive rolls. The aforementioned multiple drive rolls have lower wear than the belt. This is the gist of it.

[0013] In this fourth printing system, the support frame is moved in and out by driving the drive roll while it is in contact with the support frame. The belt does not come into contact with the support frame. Furthermore, the drive roll has lower wear resistance than the belt. Therefore, compared to when the support frame is moved in and out by the friction of the belt, wear particles are less likely to enter the printing device. [Brief explanation of the drawing]

[0014] [Figure 1] This is a schematic diagram of the implementation system 1, including the printing system 2. [Figure 2] This is a perspective view of printing system 2. [Figure 3A] This is a perspective view of support frame 100. [Figure 3B] Perspective view of the support frame 100. [Figure 4] Schematic configuration diagram of the printing system 2. [Figure 5] Perspective view of the support frame detection sensor 24. [Figure 6A] Explanatory diagram showing the operation of the support frame detection sensor 24. [Figure 6B] Explanatory diagram showing the operation of the support frame detection sensor 24. [Figure 7A] Perspective view of the storage rack 40. [Figure 7B] Perspective view of the storage rack 40. [Figure 8] Cross-sectional view of the storage rack 40 and the printing device 10. [Figure 9] Perspective view of the storage rack 40. [Figure 10] Side view of the printing system 2 [Figure 11] Perspective view of the lifting device 52 and the front-rear moving device 55. [Figure 12] Vertical cross-sectional view of the clamp portion 71. [Figure 13A] Vertical cross-sectional view of the stopper portion 75. [Figure 13B] Cross-sectional view of the stopper portion 75. [Figure 14] Perspective view of the feeding device 90. [Figure 15A] Explanatory diagram showing the operation of the position sensor 120. [Figure 15B] Explanatory diagram showing the operation of the position sensor 120. [Figure 15C] Explanatory diagram showing the operation of the position sensor 120. [Figure 16] Block diagram showing the electrical connection relationship of the printing system 2. [Figure 17] Explanatory diagram showing the state where the operator W moves the storage rack 40 to the replacement unit 30. [Figure 18A] Flowchart showing an example of the member replacement processing routine. [Figure 18B]This flowchart shows an example of a subroutine for feeding the support frame. [Figure 18C] This flowchart shows an example of a support frame delivery processing subroutine. [Figure 19A] This is an explanatory diagram showing the operation of the forward and backward movement device 55 when the storage rack 40 moves to the replacement position. [Figure 19B] This is an explanatory diagram showing the operation of the forward and backward movement device 55 when the storage rack 40 moves to the replacement position. [Figure 19C] This is an explanatory diagram showing the operation of the forward and backward movement device 55 when the storage rack 40 moves to the replacement position. [Figure 19D] This is an explanatory diagram showing the operation of the forward and backward movement device 55 when the storage rack 40 moves to the replacement position. [Figure 20] This is a perspective view of the printing system 2 when the storage rack 40 is in the storage position. [Figure 21] This is a perspective view of the printing system 2 when the storage rack 40 is in the operating position. [Figure 22] This is a perspective view of the printing system 2 with storage rack 40 being raised. [Figure 23] This is a perspective view of the printing system 2 when the storage rack 40 is in the replacement position. [Figure 24] This is a perspective view of the dispensing device 290. [Figure 25] This is a side view of the dispensing device 290. [Modes for carrying out the invention]

[0015] This embodiment will be described below with reference to the drawings. Figure 1 is a schematic diagram of the mounting system 1 including the printing system 2. Figure 2 is a perspective view of the printing system 2. Figures 3A and 3B are perspective views of the support frame 100. Figure 4 is a schematic configuration diagram of the printing system 2. Figure 5 is a perspective view of the support frame detection sensor 24. Figures 6A and 6B are explanatory diagrams showing the operation of the support frame detection sensor 24. Figures 7A and 7B are perspective views of the storage rack 40. Figure 8 is a cross-sectional view of the storage rack 40 and the printing device 10. Figure 9 is a perspective view of the storage rack 40. Figure 10 is a side view of the printing system 2. Figure 11 is a perspective view of the lifting device 52 and the forward / backward movement device 55. Figure 12 is a longitudinal cross-sectional view of the clamp section 71. Figures 13A and 13B are longitudinal and transverse cross-sectional views of the stopper section 75. Figure 14 is a perspective view of the delivery device 90. Figures 15A to 15C are explanatory diagrams showing the operation of the position sensor 120. Figure 16 is a block diagram showing the electrical connection relationships of the printing system 2. In this embodiment, the left-right direction (X-axis), front-back direction (Y-axis), and up-down direction (Z-axis) are as shown in each figure.

[0016] This mounting system 1 comprises a printing system 2, a printing inspection device 3, a mounting device 4, a mounting inspection device 5, a reflow apparatus (not shown), and a management computer 130. The mounting system 1 is configured as a mounting line in which a plurality of mounting devices 4 for mounting components onto a substrate S are arranged downstream of the printing system 2.

[0017] The printing inspection device 3 is a device that inspects the state of viscous fluids such as solder paste printed on the substrate S by the printing device 10. The mounting device 4 is a device that mounts components onto the substrate S on which the viscous fluid has been printed by the printing device 10. The mounting inspection device 5 is a device that inspects the state of components mounted on the substrate S. The reflow device is a device that heats and melts the printed viscous fluid and fixes it onto the substrate S. The management computer 130 is a device that manages information on each device of the mounting system 1. This management computer 130 manages the progress status of each device on the production line that performs the mounting process.

[0018] The printing system 2 comprises a printing device 10, a support frame detection sensor 24, a storage rack 40, a replacement unit 30, and a position sensor 120. As shown in Figure 1, the printing device 10 is a device that uses a squeegee 14 to push solder on a screen mask M into pattern holes formed in the screen mask M, thereby applying (printing) the solder, which is the object to be processed below, to the substrate S through the pattern holes. Here, "object to be processed" can be, for example, a substrate S on which components are mounted or a three-dimensional base material. "Viscous fluid" can be solder paste, conductive paste, or adhesive. Here, the substrate S and solder paste will be described below as examples.

[0019] As shown in Figure 4, the printing apparatus 10 includes a printing unit 11, a masking unit 15, a substrate processing unit 17, a cleaning unit 20, a supply unit 21, a support frame detection sensor 24, a rack detection sensor 25, an operation panel 26 (see Figure 1), and a printing control unit 28 (see Figure 16).

[0020] The printing unit 11 is located on the upper part of the printing apparatus 10 and is a unit that prints a viscous fluid onto a substrate S using a screen mask M. As shown in Figure 4, the printing unit 11 includes a print head 12, a printing movement unit 13 (see Figure 16), a squeegee lifting unit (not shown), and a squeegee 14. The printing movement unit 13 moves the print head 12 in a predetermined printing direction (in this case, the front-to-back direction) and includes a guide formed in the front-to-back direction, a slider that moves along the guide, and a motor that drives the slider. The squeegee 14 is located on the lower side of the print head 12 and is raised and lowered by the squeegee lifting unit. The printing unit 11 has two squeegees 14, one for use in the front-to-back direction.

[0021] As shown in Figure 4, the mask work unit 15 is located between the printing unit 11 and the substrate processing unit 17 in the vertical direction and is a unit that fixes and holds the screen mask M. As shown in Figure 4, the mask work unit 15 includes a replacement unit 27 and a mask fixing unit (not shown). The replacement unit 27 is a transport rod provided on the print head 12, which is lowered by an air cylinder (not shown) to a position where it contacts the screen mask M, and rotates so that the contact portion that contacts the support frame 100 also moves in the front-rear direction. The print head 12 and the replacement unit 27 engage with the support frame 100 between the shelf portion 41a of the storage rack 40 at a predetermined height and the print unit 11, thereby moving the support frame 100. The mask fixing unit 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 work unit 15, and is fixed by the mask fixing unit.

[0022] As shown in Figure 4, two substrate processing units 17 are provided below the mask processing unit 15. The substrate processing unit 17 is a unit that loads the substrate S, positions and supports the loaded substrate S, and brings it into contact with and separates it from the screen mask M. The substrate processing unit 17 includes a substrate transport unit 18 that transports the substrate S in the left-right direction, a substrate support member 19 that supports the substrate S from below, and a substrate lifting unit that raises and lowers the entire substrate processing unit 17 and the substrate support member 19.

[0023] As shown in Figure 4, the cleaning unit 20 is located between the mask work unit 15 and the substrate processing unit 17 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 20 has a cleaning member 20a, which contacts and cleans the screen mask M.

[0024] The supply unit 21 is a unit that supplies solder contained in the cartridge 23 onto the screen mask M. As shown in Figure 4, the supply unit 21 is located in front of the print head 12. The supply unit 21 applies pressure to the cartridge 23 to discharge solder from it. The cleaning member 20a and the cartridge 23 are consumables and are replaced as needed.

[0025] The rack detection sensor 25 is a sensor that detects whether or not a storage rack 40 exists inside the front of the printing device 10. As shown in Figure 4, the rack detection sensor 25 is located at the lower front of the printing device 10. When the weights 49 of the storage rack 40 are in contact with the rack detection sensor 25, the rack detection sensor 25 outputs an ON signal to the printing control unit 28 (see Figure 16). On the other hand, when the weights 49 of the storage rack 40 are not in contact with the rack detection sensor 25, the rack detection sensor 25 outputs an OFF signal to the printing control unit 28.

[0026] The control panel 26 is a unit that receives input from the worker W and presents information to the worker W. This control panel 26 comprises a display unit, which is a display, and an operation unit that has both a touch panel and buttons.

[0027] The printing control unit 28 is configured as a microprocessor centered on a CPU and controls the entire printing apparatus 10. As shown in Figure 16, the printing control unit 28 outputs signals to the printing unit 11, the masking unit 15, the substrate processing unit 17, the cleaning unit 20, the supply unit 21, the operation panel 26, the replacement unit 30, and the management computer 130 as an external device. The printing control unit 28 also receives signals from the printing unit 11, the masking unit 15, the substrate processing unit 17, the cleaning unit 20, the supply unit 21, the support frame detection sensor 24, the rack detection sensor 25, the operation panel 26, the replacement unit 30, and the management computer 130 as an external device. The printing control unit 28 has a storage unit that stores information about the substrate S to be printed, a printing processing program that performs printing on the substrate S, and a component replacement processing program that executes the replacement process of the support frame 100 by the replacement unit 27.

[0028] As shown in Figures 5, 6A, and 6B, the support frame detection sensor 24 is an optical sensor capable of detecting an object (for example, a support frame 100) located between the storage rack 40 and the printing device 10 (hereinafter referred to as the movement path). The support frame detection sensor 24 has a light-emitting unit 24a located on the left side of the movement path and a light-receiving unit 24b located on the right side of the movement path (see Figures 6A and 6B). When an object (for example, a support frame 100) is present in the movement path, the light from the light-emitting unit 24a is blocked and an OFF signal is output to the printing control unit 28 (see Figure 16). On the other hand, when there is no object in the movement path, light from the light-emitting unit 24a is received and an ON signal is output to the printing control unit 28.

[0029] The storage rack 40 is a housing that houses a support frame 100 capable of supporting interchangeable parts (for example, a screen mask M and a substrate support member 19) related to the printing process performed in the printing unit 11. As shown in Figures 7A, 7B, and 8, the storage rack 40 has a rack body 41, a handle 42, a caster part 43, a support fixing member 44, and a weight 49.

[0030] As shown in Figure 3A, the storage rack 40 can accommodate a support frame 100 to which a screen mask M is fixed. In this embodiment, the pattern holes formed in front of the support frame 100 of the screen mask M are larger in size than the pattern holes formed in rear of the support frame 100. Also, as shown in Figure 3B, the storage rack 40 can accommodate a support frame 100 that holds a substrate support member 19. The substrate support member 19 is held by a holding portion 101 provided on the support frame 100. The holding portion 101 has a pair of claw members 103 whose tips face each other. The pair of claw members 103 support the lower surface of the substrate support member 19. The pair of claw members 103 are normally biased upward by a spring (not shown) and are maintained in a closed state horizontally. When pushed down from above, the pair of claw members 103 rotate downward against the elastic force of the elastic body and enter an open state. Each holding portion 101 can hold a substrate support member 19 of a different size. For example, in this embodiment, the substrate support member 19 held by the holding portion 101 provided on the front side of the support frame 100 is larger in size than the substrate support member 19 held by the holding portion 101 provided on the rear side of the support frame 100.

[0031] The rack body 41 has multiple shelves (four in this embodiment) 41a, a passage 41b, and multiple openings 41c. The shelves 41a are arranged at predetermined intervals in the vertical direction so that the support frame 100 can be placed on them in the vertical direction. The shelves 41a are provided on the left and right sides inside the rack body 41 so that the ends of the support frame 100 are inserted into and supported. The passage 41b communicates with the outside, such as the printing section 11. The support frame 100 can move in the front-to-back direction (movement direction) through this passage 41b and is sent in and out of the rack body 41. The openings 41c are for sending in and out of the storage rack 40 the feeding section 91 of the feeding device 90 (see Figure 14). The openings 41c are grooves extending in the front-to-back direction formed on the left side of the rack body 41.

[0032] The handle 42 consists of a rod-shaped body grasped by the worker W and a support member that secures the rod-shaped body. The caster section 43 is located at the bottom of the rack body 41. This caster section 43 consists of a structure with a space in the center and a caster with a wheel located on the underside of the structure. The worker W moves the storage rack 40 by holding this handle 42 (see Figure 17).

[0033] The support fixing member 44 is a plate-shaped member fixed to the left and right ends of the front lower surface of the rack body 41. This support fixing member 44 is used when connecting to the replacement unit 30. As shown in Figure 9, the support fixing member 44 has a block portion 45, a receiving portion 46, a locking hole 47, and an insertion hole 48. The block portion 45 is the member to which the hook portion 56 provided on the replacement unit 30 is connected, and has a space between the two blocks into which the hook portion 56 is inserted. The receiving portion 46 is the part that receives the cam follower 53a provided on the rack support member 53 of the replacement unit 30, and has an arc-shaped cutout portion. The locking hole 47 is a through hole into which the clamp lever 72 of the fixing portion 70 provided on the rack support member 53 of the replacement unit 30 is inserted. The insertion hole 48 is a through hole into which the insertion pin 76 of the fixing portion 70 provided on the rack support member 53 of the replacement unit 30 is inserted.

[0034] The weight 49 is intended to position the center of gravity of the storage rack 40 toward the printing device 10 side (rear side) of the rack support member 53 of the exchange unit 30 when the storage rack 40 is facing the printing device 10. As shown in Figures 8 to 10, the weight 49 is located on the rear of the lower surface of the rack body 41. The mass of the weight 49 is determined by considering the total weight of the storage rack 40, the position of the substrate support member 19, the weight of the support frame 100, and the weight of the substrate support member 19 held by the support frame 100.

[0035] The replacement unit 30 raises and lowers the storage rack 40 and replaces the support frame 100 between the storage rack 40 and the printing device 10. As shown in Figures 1 and 2, the replacement unit 30 has a left unit 51, a right unit 61, and a replacement control unit 110 (see Figure 16). The left unit 51 is located on the front left side of the housing of the printing device 10. The right unit 61 is located on the front right side of the housing of the printing device 10. As shown in Figure 4, the length A of the left unit 51 and the right unit 61 along the direction of movement of the support frame 100 is shorter than the length B of the storage rack 40. The replacement unit 30 has a lifting space 58 in the center between the left unit 51 and the right unit 61 through which the storage rack 40 is raised and lowered. As shown in Figure 4, when the storage rack 40 is in the storage position, the replacement unit 30 houses the storage rack 40 on the same surface as the front of the main body of the replacement unit 30 or inward from the front of the main body. When the storage rack 40 is in the replacement position, the replacement unit 30 supports the storage rack 40 in a position that protrudes from the front of the main body of the replacement unit 30.

[0036] As shown in Figure 11, the left-side unit 51 includes a lifting device 52, a forward / backward movement device 55, a fixing part 70, a delivery device 90 (see Figure 16), and an exchange control unit 110 (see Figure 16).

[0037] The lifting device 52 is a device that raises and lowers the storage rack 40 between an exchange position when the support frame 100 is exchanged between the storage rack 40 and the printing device 10, and an operating position lower than this exchange position. As shown in Figure 11, the lifting device 52 comprises a rack support member 53 and a lifting drive unit 54. The rack support member 53 is a plate-shaped member that receives the storage rack 40 and supports the storage rack 40 from the lower left side. The rack support member 53 is provided on the surface of the left unit 51 facing the right unit 61. The rack support member 53 is provided with cam followers 53a at its front and rear ends. The cam followers 53a support the support fixing member 44 provided on the storage rack 40 from below, and move the storage rack 40 up and down in accordance with the vertical movement of the rack support member 53. The lifting drive unit 54 may, for example, have a ball screw having a lifting shaft and a drive motor to move the rack support member 53 up and down, or it may use a linear motor to move the rack support member 53 up and down.

[0038] The forward / backward movement device 55 moves the storage rack 40 between an operating position in which the storage rack 40 can be raised and lowered by the lifting device 52, and a storage position in which the storage rack 40 is retracted into the housing of the printing device 10. The forward / backward movement device 55 moves the storage rack 40 in the horizontal direction. As shown in Figure 11, the forward / backward movement device 55 comprises a hook portion 56 and a forward / backward drive unit 57. The hook portion 56 is mounted on the shaft of the forward / backward drive unit 57 so as to be able to move up and down. The hook portion 56 is a member that rises relative to a block portion 45 provided on the storage rack 40 and engages with this block portion 45. The forward / backward drive unit 57 moves the hook portion 56 between the storage position and the operating position. The forward / backward drive unit 57 may have a ball screw and a drive motor to move the hook portion 56 back and forth, or it may be a linear motor to move the hook portion 56 back and forth.

[0039] As shown in Figure 11, the fixing part 70 is a safety mechanism that prevents unintended movement or falling of the storage rack 40 when the storage rack 40 is raised or lowered by the lifting device 52. The fixing part 70 has a clamp part 71 and a stopper part 75.

[0040] As shown in Figure 12, the clamp section 71 has a clamp lever 72 that is inserted into a locking hole 47 formed in the support fixing member 44 of the storage rack 40, and is a mechanism that restricts the horizontal movement of the storage rack 40. The clamp section 71 is provided on the rack support member 53 and moves up and down together with the rack support member 53. This clamp section 71 comprises a clamp lever 72, a lever rotating part 73, and an air cylinder 74. The clamp lever 72 has a lever that is inserted into the locking hole 47, a pivot shaft fixed to the rack support member 53 that rotates the lever, and an elliptical hole into which a pin of the lever rotating part 73 is inserted. The lever rotating part 73 is a member that is directly connected to the rod of the air cylinder 74 and moves in a straight line. A pin is provided at the tip of the lever rotating part 73 that is inserted into the elliptical hole. The air cylinder 74 is a drive unit that moves the rod up and down by compressed air supplied from an air supply device (not shown). In this clamp section 71, when the rod of the air cylinder 74 rises, the clamp lever 72 rotates around the pivot axis and the lever is inserted into the locking hole 47. Conversely, when the rod of the air cylinder 74 descends, the clamp lever 72 rotates around the pivot axis and the lever is released from the locking hole 47.

[0041] As shown in Figures 13A and 13B, the stopper section 75 has an insertion pin 76 that is inserted into an insertion hole 48 formed in the support fixing member 44 of the storage rack 40. When the storage rack 40 rises, the insertion pin 76 is inserted into the insertion hole 48, preventing the storage rack 40 from falling. The stopper section 75 has an insertion pin 76 and a pin drive unit 77. The pin drive unit 77 inserts the insertion pin 76 into the insertion hole 48 when the storage rack 40 rises from the operating position, and pulls in the insertion pin 76 to release it from the insertion hole 48 when the storage rack 40 is in the operating position. The pin drive unit 77 is composed of a spring 78, a cam follower 79, a guide member 80, and an air cylinder 81. The insertion pin 76, spring 78, and cam follower 79 are provided on the rack support member 53 and move up and down together with the rack support member 53. On the other hand, the guide member 80 and the air cylinder 81 are located in the operating position on the housing side of the replacement unit 30 and do not move up or down. The spring 78 is a member that constantly biases the insertion pin 76 toward the insertion hole 48. The insertion pin 76 is a member that is inserted into the insertion hole 48 and is a cylindrical member with a space inside. The spring 78 is provided in the internal space of the insertion pin 76. The cam follower 79 is provided at the rear end of the insertion pin 76. This cam follower 79 abuts against the wall of the guide member 80 and moves up and down together with the rack support member 53, guided by the guide member 80. The guide member 80 is a member having a shape in which two members with an L-shaped cross-section with the longitudinal direction as vertical are facing each other. The L-shaped wall portion of this guide member 80 is formed in the vertical direction, and the cam follower 79 moves along this wall portion. The guide member 80 is fixed to the rod of the air cylinder 81. The air cylinder 81 is a drive unit that drives the rod horizontally using compressed air supplied from an air supply device (not shown). When the rod of the air cylinder 81 is pushed out while the rack support member 53 is in the operating position, the stopper unit 75 causes the insertion pin 76, biased by the spring 78, to protrude from the rack support member 53 (see Figure 13A).Furthermore, when the rack support member 53 is in the operating position and the rod of the air cylinder 81 is retracted, the stopper portion 75 retracts the insertion pin 76 via the guide member 80 and the cam follower 79, preventing it from protruding from the rack support member 53 (see Figure 13B). Moreover, when the rack support member 53 rises from the operating position, the contact of the cam follower 79 with the guide member 80 is released, and the insertion pin 76 remains inserted into the insertion hole 48 by the biasing force of the spring 78.

[0042] The feeding device 90 exchanges the support frame 100 between the storage rack 40 and the printing device 10 by driving the feeding unit 91 when the feeding unit 91 abuts against the support frame 100. As shown in Figure 14, the feeding device 90 comprises a feeding unit 91 and an air cylinder 92. The feeding unit 91 comprises a belt 93 and a drive unit 94 that rotates the belt 93. The belt 93 moves the support frame 100 towards the printing device 10 or the storage rack 40 by the frictional force of its surface 93a. The drive unit 94 is configured, for example, as a servo motor. As shown in Figure 14, the feeding unit 91 is configured so that the power of the drive unit 94 is transmitted to the belt 93 via a plurality of pulleys 95. The air cylinder 92 is used to move the feeding unit 91 in and out of the storage rack 40 through the opening 41c. A magnet is provided on the piston of the air cylinder 92.

[0043] The right-side unit 61 faces the left-side unit 51 and has the same configuration as the left-side unit 51, except that it does not have a delivery device, so a detailed explanation of the right-side unit 61 is omitted. The right-side unit 61 includes a rack support member, a cam follower, a lifting drive unit, a forward / backward movement unit, a hook unit, and a forward / backward drive unit, among other things.

[0044] The exchange control unit 110 is configured as a microprocessor centered on a CPU and controls the entire exchange unit 30. As shown in Figure 16, the exchange control unit 110 outputs signals to the lifting drive unit 54, the forward / backward drive unit 57, and the printing control unit 28. The exchange control unit 110 also receives signals from the printing control unit 28, the management computer 130, the position sensor 120, and the like.

[0045] The position sensor 120 is a sensor capable of detecting the left-right position of the feed unit 91. The position sensor 120 has two auto switches 120a and 120b. The auto switches 120a and 120b are attached to the cylinder tube of the air cylinder 92. The auto switches 120a and 120b have magnetic detection elements capable of detecting magnetism. The auto switches 120a and 120b detect magnetism when a magnet provided on the piston of the air cylinder 92 approaches the magnetoresistive element. As shown in Figure 15A, when the piston of the air cylinder 92 is positioned at the leftmost end (hereinafter referred to as the retracted end), the auto switch 120a outputs an ON signal to the exchange control unit 110, and the auto switch 120b outputs an OFF signal to the exchange control unit 110. At this time, the feed unit 91 is positioned outside the storage rack 40. As shown in Figure 15B, when the piston of the air cylinder 92 is moved from the retracted end to the right side while the support frame 100 is not housed in the shelf section 41a, the feed section 91 enters the interior of the storage rack 40 (hereinafter referred to as "air vibration"), and the piston is positioned at the far right end (hereinafter referred to as the "forward end"). At this time, the auto switch 120a outputs an OFF signal to the exchange control unit 110, and the auto switch 120b outputs an ON signal to the exchange control unit 110. As shown in Figure 15C, when the piston of the air cylinder 92 is moved from the retracted end to the forward end while the support frame 100 is present in the shelf section 41a, the feed section 91 abuts against the support frame 100, and the piston is positioned between the retracted end and the forward end. At this time, the auto switches 120a and 120b output OFF signals to the exchange control unit 110.

[0046] Next, the printing process of the printing apparatus 10 configured in this way will be explained using Figure 17. When performing the printing process, the operator W performs the task of attaching the storage rack 40 to the exchange unit 30. Figure 17 is an explanatory diagram showing the operator W moving the storage rack 40 to the exchange unit 30. After attaching the storage rack 40 to the exchange unit 30, the operator W inputs the execution of the printing process from the operation panel 26. The printing process routine for performing the printing process is stored in the memory of the printing control unit 28, and the printing control unit 28 executes it after receiving the execution command for the printing process from the operator W. When the printing process routine is started, the CPU of the printing control unit 28 first transports the substrate S with the substrate processing unit 17, fixes it in place, and raises it 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 with the mask processing unit 15 to align the pattern holes with the substrate S. Next, the CPU moves the cartridge 23 onto the screen mask M and dispenses solder into it. The CPU then moves the print head 12 and lowers the squeegee 14 to bring it into contact with the upper surface of the screen mask M, and moves it in the back-and-forth direction to print solder onto the substrate S. In this way, the print control unit 28 performs printing processes, including substrate transport and fixing, solder supply, and squeegee movement, to print on the substrate S. The CPU repeats this printing process, changing the screen mask M, until the production process for all types of substrate S in the manufacturing plan is completed.

[0047] Next, the operation of the replacement unit 30 for replacing the support frame 100 will be explained using Figures 18 to 23. Figure 18A is a flowchart of an example of a support frame replacement processing routine. Figure 18B is a flowchart of an example of a support frame feeding processing subroutine. Figure 18C is a flowchart of an example of a support frame delivery processing subroutine. Figures 19A to 19D are explanatory diagrams showing the operation of the forward and backward movement device 55 when the storage rack 40 moves to the replacement position. Figure 20 is a perspective view of the printing system 2 when the storage rack 40 is in the storage position. Figure 21 is a perspective view of the printing system 2 when the storage rack 40 is in the operating position. Figure 22 is a perspective view of the printing system 2 when the storage rack 40 is rising. Figure 23 is a perspective view of the printing system 2 when the storage rack 40 is in the replacement position.

[0048] The replacement of components is performed by retrieving the screen mask M, retrieving the substrate support member 19, supplying a new substrate support member 19, and supplying a new screen mask M. These retrieval and supply operations are performed using a common movement path. The component replacement processing routine is stored in the memory of the replacement control unit 110 and executed after the replacement unit 30 is started. When this routine is executed, the CPU of the replacement control unit 110 determines whether or not the storage rack 40 is in the storage position based on the detection signal from the rack detection sensor 25 (S100). As shown in Figure 20, if the storage rack 40 is in the storage position, the CPU raises the hook portion 56 and connects it to the block portion 45, as shown in Figures 19A and 19B (S110). Once the hook portion 56 is inserted into the block portion 45, the forward / backward movement device 55 can move the storage rack 40 forward and backward. On the other hand, if the storage rack 40 is not in the storage position in S100, the CPU waits until the storage rack 40 is in the storage position.

[0049] After S110, the CPU of the replacement control unit 110 waits until it is time to replace the screen mask M, which is a replaceable component (S120). The timing for replacing the screen mask M may be, for example, after the production of a predetermined type of substrate S has finished and before the production of the next type of substrate S has started.

[0050] On the other hand, if a positive determination is made in S120, the CPU moves the hook portion 56 to the operating position using the forward / backward movement device 55, as shown in Figure 19C (S130). Then, as shown in Figure 21, the storage rack 40 can be pulled out and raised.

[0051] Next, as shown in Figure 19D, the CPU raises the rack support member 53 and connects it to the support fixing member 44 of the housing rack 40 (S140). When the rack support member 53 is raised in the operating position, the cam follower 53a enters the receiving part 46, and the housing rack 40 is connected to the rack support member 53.

[0052] Next, the CPU performs the clamping process (S150). Specifically, the CPU drives the air cylinder 74 so that the clamp lever 72 is inserted into the locking hole 47, and drives the air cylinder 81 so that the insertion pin 76 of the stopper part 75 is inserted into the insertion hole 48.

[0053] In this embodiment, the holding portion 101 located on the front side of the support frame 100 holds a substrate support member 19 that is larger (heavier) than the holding portion 101 located on the rear side of the support frame 100. Therefore, the center of gravity of the storage rack 40 tends to be biased towards the front. However, in this embodiment, the storage rack 40 has a weight 49 on the rear of its lower surface. Therefore, even after the rack support member 53 rises and the cam follower 53a enters the receiving portion 46, the center of gravity of the storage rack 40 is closer to the printing device 10 than the front cam follower 53a, and the storage rack 40 is less likely to tilt forward relative to the rack support member 53. Therefore, the position of the locking hole 47 relative to the clamp lever 72 is less likely to shift, and the position of the insertion hole 48 relative to the insertion pin 76 is less likely to shift. Thus, even in such cases, the clamping process can be performed relatively easily.

[0054] Next, the CPU of the exchange control unit 110 controls the lifting drive unit 54 so that the empty shelf section 41a faces the exchange door 29, as shown in Figures 22 and 23 (S160). Then, the CPU executes the support frame feeding process subroutine (S170, see Figure 18B). When the support frame feeding process subroutine starts, the CPU outputs a command to the printing device 10 to send out the support frame 100 (S300). Upon receiving the command to send out the support frame 100, the printing control unit 28 uses the exchange unit 27 to move the screen mask M to the empty shelf section 41a.

[0055] Next, the CPU of the exchange control unit 110 controls the air cylinder 92 so that the feed unit 91 of the delivery device 90 enters the interior of the storage rack 40 through the opening 41c (S310). Then, the CPU determines whether or not the feed unit 91 is running without power (S320). Specifically, if an OFF signal is input from auto switch 120a and an ON signal is input from auto switch 120b, the CPU makes a positive determination. On the other hand, if OFF signals are input from both auto switches 120a and 120b, the CPU makes a negative determination.

[0056] The reason for making this determination is as follows: If there is no support frame 100 on the storage rack 40, the feed unit 91 (surface 93a of the belt 93) will not abut against the support frame 100 and will miss. In this case, the piston of the air cylinder 92 will move to the forward end and the auto switch 120b will output an ON signal. If there is a support frame 100 on the storage rack 40, the feed unit 91 (surface 93a of the belt 93) will abut against the support frame 100 and will not miss. In this case, the piston of the air cylinder 92 will be positioned between the retracted end and the forward end and the auto switches 120a and 120b will output OFF signals.

[0057] If the CPU makes a positive determination in S320, it proceeds to S360. On the other hand, if the CPU makes a negative determination in S320, it controls the drive unit 94 so that the support frame 100 is fed into the storage rack 40 (S330). Next, the CPU waits until a predetermined time has elapsed (S340). Here, the predetermined time is set in advance as the time required to feed out the support frame 100. Then, the CPU determines whether or not the support frame 100 is in the movement path (S350). The CPU obtains a detection signal from the support frame detection sensor 24 from the print control unit 28. If an OFF signal is obtained, the CPU makes a positive determination. On the other hand, if an ON signal is obtained, the CPU makes a negative determination. If the CPU makes a positive determination in S350, it proceeds to S360.

[0058] After making a positive determination in S320 or S350, the CPU reports an error (S360). Specifically, the CPU outputs an error to the management computer 130. If an error is input, the management computer 130 displays a message indicating that an error has occurred on a display device (not shown). If making a negative determination in S350, the CPU controls the air cylinder 92 so that the feed unit 91 is pulled out of the storage rack 40 through the opening 41c (S370).

[0059] Next, the CPU returns to the component replacement processing routine and controls the lifting drive unit 54 so that the shelf section 41a, which houses the support frame 100 that does not hold the substrate support member 19, moves to a position facing the replacement door 29 (S180). Next, the CPU executes the support frame delivery processing subroutine (S190, see Figure 18C). When the support frame delivery processing subroutine starts, the CPU controls the air cylinder 92 so that the feed section 91 of the delivery device 90 enters the interior of the storage rack 40 through the opening 41c (S400).

[0060] Next, the CPU determines whether the feed unit 91 has failed to move (S410). If the determination in S410 is positive, the CPU proceeds to S460. On the other hand, if the determination in S410 is negative, the CPU controls the drive unit 94 so that the support frame 100 is fed out from the storage rack 40 (S420).

[0061] Next, the CPU outputs a support frame feed instruction to the printing device 10 (S430). Upon receiving the support frame feed instruction, the printing control unit 28 uses the exchange unit 27 to move the support frame 100 to the mask work unit 15. Next, the CPU of the exchange control unit 110 waits until a predetermined time has elapsed (S440). Here, the predetermined time is set in advance as the time required to feed out the support frame 100. Subsequently, the CPU determines whether or not the support frame 100 is in the movement path (S450). If the determination in S450 is positive, the CPU proceeds to S460. After the determination in S410 or after the determination in S450, the CPU reports an error (S460). If the determination in S450 is negative, the CPU controls the air cylinder 92 so that the feed unit 91 is pulled out of the storage rack 40 through the opening 41c (S470).

[0062] Next, the CPU returns to the component replacement processing routine and outputs a command to the printing device 10 to retrieve the substrate support member 19 (S200). Upon receiving the retrieval command, the printing control unit 28 controls a pusher (not shown) to push down the claw member 103 of the support frame 100. This causes the claw member 103 to open. In this state, the printing control unit 28 controls a substrate lifting unit (not shown) to raise the substrate support member 19. Then, in this state, the printing control unit 28 releases the pusher from pressing down the claw member 103. As a result, the claw member 103 closes, and the substrate support member 19 is held in the holding part 101 of the support frame 100.

[0063] Then, the CPU executes the support frame feeding subroutine (S210). The support frame feeding processing subroutine is as previously described.

[0064] Next, the CPU controls the lifting drive unit 54 so that the shelf section 41a, which houses the support frame 100 that holds the substrate support member 19 to be replaced, moves to a position facing the replacement door 29 (S220). Then, the CPU executes the support frame delivery processing subroutine (S230). The support frame delivery processing subroutine is as previously described. As a result, the support frame 100 that holds the substrate support member 19 to be replaced is sent into the printing device 10.

[0065] The CPU then outputs an instruction to the printing device 10 to replace the substrate support member 19 (S240). Upon receiving the replacement instruction, the printing control unit 28 raises a substrate lifting unit (not shown). In this state, the printing control unit 28 controls a pusher (not shown) to push down the claw member 103. This causes the claw member 103 to open, and the substrate support member 19 is transferred to the substrate lifting unit.

[0066] Next, the CPU executes the support frame feeding processing subroutine (S250). Then, the CPU of the exchange control unit 110 controls the lifting drive unit 54 so that the shelf section 41a, which houses the support frame 100 that holds the screen mask M, moves to a position facing the exchange door 29 (S260).

[0067] Next, the CPU executes a support frame delivery processing subroutine (S270) and controls the lifting drive unit 54 so that the storage rack 40 moves to the operating position (S280).

[0068] Next, the CPU releases the clamp by the fixing part 70 and moves the hook part to the storage position (S290). After S360 of the support frame feeding processing subroutine, after S460 of the support frame delivery processing subroutine, or after S290 of the component replacement processing routine, the CPU terminates this routine.

[0069] Here, the correspondence between the components of this embodiment and the components of the present disclosure will be clarified. The printing system 2 of this embodiment corresponds to the printing system of the present disclosure, the printing device 10 corresponds to the printing device, the storage rack 40 corresponds to the storage rack, the delivery device 90 corresponds to the delivery device, the position sensor 120 and the exchange control unit 110 correspond to the first detection unit, and the support frame detection sensor 24 and the printing control unit 28 correspond to the second detection unit.

[0070] In the printing system 2 described above, it is possible to detect whether there is a support frame 100 in the shelf section 41a based on the detection signal from the position sensor 120. Therefore, it is possible to prevent attempts to send the support frame 100 to the printing device 10 when there is no support frame in the shelf section 41a, or attempts to send the support frame 100 in from the printing device 10 when there is a support frame in the shelf section 41a. Thus, the sending and receiving of the support frame 100 between the storage rack 40 and the printing device 10 can be performed more reliably.

[0071] Furthermore, the printing system 2 includes a support frame detection sensor 24 capable of detecting the presence or absence of an object in the movement path between the shelf section 41a and the printing device 10, and a replacement control unit 110 capable of detecting if the support frame 100 is caught in the movement path based on the detection signal from the support frame detection sensor 24. Therefore, it is possible to prevent situations in which the storage rack 40 is raised or lowered while the support frame 100 is caught in the movement path.

[0072] Furthermore, in the printing system 2, a weight 49 is provided on the storage rack 40 such that the center of gravity of the storage rack 40 is located closer to the printing device 10 than the position where it is supported by the rack support member 53. Therefore, when the storage rack 40 is raised and lowered together with the rack support member 53, the storage rack 40 is less likely to tilt away from the printing device 10. This is particularly effective in the printing system 2 because the upstream holding part 101 of the support frame 100 holds a larger (heavier) substrate support member 19 than the substrate support member 19 held by the downstream holding part 101 of the support frame 100 in the direction of movement. In this case, the center of gravity of the storage rack 40 is more likely to be biased away from the printing device 10 relative to the rack support member 53 compared to cases where substrate support members 19 of the same size are held in both the downstream and upstream holding parts 101, or where a substrate support member 19 is held only in the downstream holding part in the direction of movement.

[0073] It goes without saying that this disclosure is not limited in any way to the embodiments described above, and can be implemented in various forms as long as they fall within the technical scope of this disclosure.

[0074] In the embodiment described above, a feeder 90 was used to feed the support frame 100 in and out between the printing device 10 and the storage rack 40. However, instead of the feeder 90, a feeder 290, as shown in Figures 24 and 25, may be used. The feeder 290 has a feed unit 191 and an air cylinder 92. The feed unit 191 has a drive unit 94, a belt 293, and a plurality (two in Figure 24) of drive rolls 296. The belt 293 transmits power from the drive unit 94 to the drive rolls 296 via a plurality of pulleys 95. The belt 293 is made of, for example, rubber. The drive rolls 296 are driven while abutting against the support frame 100, thereby enabling the support frame 100 to be fed in and out in the direction of movement (forward and backward direction). The drive rolls 296 are made of a material with lower wear resistance than the belt 293 (for example, urethane). This method makes it less likely for wear particles to enter the inside of the printing device compared to when the support frame is moved in and out by the friction of a belt. This is because urethane rolls are less prone to wear than belts.

[0075] In the embodiment described above, the replacement unit 30 is equipped with a hook portion 56 that engages with the block portion 45 of the storage rack 40. However, it may be connected to the storage rack 40 by a mechanism other than the hook portion 56. Also, in the embodiment described above, there is a replacement control unit 110 that raises and lowers the hook portion 56, but this may be omitted.

[0076] In the embodiment described above, the replacement unit 30 is provided with a clamp portion 71 and a stopper portion 75 as the fixing portion 70, but it is not limited to this, and either one may be omitted. Alternatively, fixing portions other than the clamp portion 71 and the stopper portion 75 may be used. Or, although the replacement unit 30 is provided with a fixing portion 70, this may be omitted.

[0077] In the embodiment described above, the system is equipped with auto switches 120a and 120b. However, it is also possible to equip the system with only auto switch 120b.

[0078] In the embodiment described above, the storage rack 40 is moved by the worker W, but the invention is not limited to this, and for example, the storage rack 40 may be moved by an automated guided vehicle (AGV). The AGV may, for example, enter the central space of the caster section 43 and move the storage rack 40. When the AGV moves the storage rack 40, the handle 42 may be omitted.

[0079] In the above-described embodiment, the replacement part 27 is a rod structure having a contact portion provided on the print head 12, but it is not limited to this and may be an independent mechanism provided elsewhere than the print head 12. Also, in the above-described embodiment, the replacement part 27 is a rod mechanism that engages with the support frame 100, but it may be, for example, a conveyor mechanism on which the support frame 100 including the replaceable member is placed and moved.

[0080] In the embodiments described above, the storage rack 40 was described as not having a drive unit for moving the support frame 100, but it is not limited to this, and the storage rack 40 may have a drive unit for moving the support frame 100.

[0081] In the embodiment described above, the dispensing device 90 is provided only on the left unit 51. However, it may be provided only on the right unit 61, or it may be provided on both the left unit 51 and the right unit 61.

[0082] In the embodiments described above, the replaceable components were explained as the screen mask M and the substrate support member 19, but are not limited to these as long as they require replacement. In addition to these, one or more of the following may be used: the cartridge 23 for containing the viscous fluid, the squeegee 14, and the cleaning member 20a used for cleaning the screen mask M. Furthermore, although the object to be processed was described as the substrate S, it is not limited to this as long as the viscous fluid is printed on it, and may be a three-dimensional object, etc. Also, although the viscous fluid was described as solder paste, it may be a conductive paste or adhesive, etc. [Industrial applicability]

[0083] This disclosure is applicable to the technical field of equipment for mounting components. [Explanation of symbols]

[0084] 1 Assembly system, 2 Printing system, 3 Print inspection device, 4 Assembly device, 5 Assembly inspection device, 10 Printing device, 11 Printing section, 12 Print head, 13 Printing movement section, 14 Squeegee, 15 Masking section, 17 Substrate processing section, 18 Substrate transport section, 19 Substrate support member, 20 Cleaning section, 20a Cleaning member, 21 Supply section, 23 Cartridge, 24 Support frame detection sensor, 24a Light emitting section, 24b Light receiving section, 25 Rack detection sensor, 26 Operation panel, 27 Replacement section, 28 Printing control section, 29 Replacement door, 30 Replacement unit, 40 Storage rack, 41 Rack body, 41a Shelf section, 41b Passage section, 41c Opening, 42 Handle, 43 Caster section, 44 Support fixing member, 45 Block section, 46 Receiving section, 47 Locking hole, 48 Insertion hole, 49 Weight, 51 Left unit, 52 Lifting device, 53 Rack support member, 53a Cam follower, 54 Lifting drive unit, 55 Moving device, 56 Hook part, 57 Drive unit, 58 Lifting space, 61 Right unit, 70 Fixing part, 71 Clamp part, 72 Clamp lever, 73 Lever rotation part, 74 Air cylinder, 75 Stopper part, 76 Insertion pin, 77 Pin drive unit, 78 Spring, 79 Cam follower, 80 Guide member, 81 Air cylinder, 90 Feeding device, 91 Feed part, 92 Air cylinder, 93 Belt, 93a Surface, 94 Drive unit, 95 Pulley, 100 Support frame, 101 Holding part, 103 Claw member, 110 Replacement control unit, 120 Position sensor, 120a, 120b Auto switch, 130 Management computer, 191 feed unit, 290 feeder, 293 belt, 296 drive roll, L cross section, M screen mask, S substrate, W operator.

Claims

1. Printing device and A storage rack is provided with multiple shelves capable of accommodating support frames for replacement components, the support frames being movable between the printing device and the shelves when facing the printing device, and having an opening on the side parallel to the direction of movement of the support frames. A feeding device having a feeding section that can move the support frame in the direction of movement while it is abutting against the support frame in the storage rack, and a moving section that moves the feeding section in and out of the storage rack through the opening, A first detection unit has a first sensor that detects the insertion state of the feeding unit into the storage rack, and can detect that there is no support frame in the shelf based on the detection signal of the first sensor, A printing system equipped with the following features.

2. A printing system according to claim 1, The second detection unit has a second detection sensor capable of detecting the presence or absence of an object in the movement path between the shelf and the printing device, and is capable of detecting that the support frame is caught in the movement path based on the detection signal from the second sensor. A printing system equipped with the following features.

3. Printing device and A storage rack is provided with multiple shelves capable of accommodating support frames for replacement components, and the support frames are movable between the printing device and the shelves when facing the printing device. With the storage rack facing the printing device, it has a pair of rack support members capable of supporting the lower surface of the storage rack from both sides in a direction perpendicular to the direction of movement and vertical direction of the support frame, and a lifting device for raising and lowering the rack support members, Equipped with, The support frame is provided with a plurality of holding parts, each capable of holding interchangeable members of different sizes, arranged in a line along the direction of movement. The storage rack is provided with weights such that, when the storage rack is facing the printing device, the center of gravity of the storage rack is located closer to the printing device than the position where it is supported by the rack support member. Printing system.

4. Printing device and A storage rack is provided with multiple shelves capable of accommodating support frames for replacement components, the support frames being movable between the printing device and the shelves when facing the printing device, and having an opening on the side parallel to the direction of movement of the support frames. A feeding device comprising: a feeding section that includes one or more urethane drive rolls, the drive rolls being driven while abutting against the support frame in the storage rack, thereby enabling the support frame to be fed in and out in the direction of movement; and a moving section that moves the feeding section in and out of the storage rack through the opening. A printing system equipped with the following features.

5. Printing device and A storage rack is provided with multiple shelves capable of accommodating support frames for replacement components, the support frames being movable between the printing device and the shelves when facing the printing device, and having an opening on the side parallel to the direction of movement of the support frames. A feeding device having a feeding section that can feed the support frame in and out in the direction of movement, and a feeding device that moves the feeding section in and out of the storage rack through the opening, Equipped with, The feed unit comprises one or more drive rolls that are driven while abutting against a support frame within the storage rack, and a belt provided at a location that does not contact the support frame for transmitting power to the drive rolls. The drive roll has lower wear resistance than the belt. Printing system.

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