Component press-bonding device, and component press-bonding method

Abstract

To provide a component press-bonding device, etc., capable of suppressing a state where press-bonding of a component to a substrate is not appropriately performed.SOLUTION: A control section 232 that a component press-bonding device 200 comprises performs first control in which a pressing force which acts on a support 220 toward the side of one end is generated from a piston rod 208 by moving the piston rod 208 to the side of one end and supporting the piston rod on the support 220 by controlling a cylinder 205 and the pressing force is controlled to be a first pressure and then performs second control in which a press-bonding head 203 is caused to press-bond a component 160 onto a substrate 150 by moving the support 220 to the side of one end together with the piston rod 208 by controlling a motor 214. In the first control, the pressing force is controlled to be a second pressure that is larger than the first pressure and then the pressing force is controlled to be the first pressure.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a component crimping device and a component crimping method. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there is a component crimping device that uses a cylinder to crimp a component onto a substrate (see, for example, Patent Document 1).

[0003] A pressure device, which is an example of a component crimping device disclosed in Patent Document 1, uses a cylinder to generate a pressure force (also called a pushing force) on a crimping head attached to the end of a piston rod of the cylinder, thereby mounting components on a board. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5009738 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention provides a component compression bonding device and the like that can prevent inappropriate compression bonding of a component to a substrate. [Means for solving the problem]

[0006] A component crimping device according to one aspect of the present invention includes a cylinder having a piston rod, a crimping head attached to one end of the piston rod in a longitudinal direction, a support for supporting the piston rod, a motor for moving the support, and a control unit for controlling the cylinder and the motor to move the support together with the piston rod toward the one end side, thereby causing the crimping head to crimp a component onto a substrate, wherein the control unit performs first control to control the cylinder to move the piston rod toward the one end side and support it on the support, thereby generating a pressing force acting from the piston rod toward the one end side and controlling the pressing force to be a first pressure, and then performs second control to control the motor to move the support together with the piston rod toward the one end side, causing the crimping head to crimp the component onto the substrate, and in the first control, controls the pressing force to be a second pressure greater than the first pressure, and then controls the pressing force to be the first pressure.

[0007] A component crimping method according to one embodiment of the present invention is a component crimping method performed by a component crimping device including a cylinder having a piston rod, a crimping head attached to one end of the piston rod in the longitudinal direction, a support for supporting the piston rod, and a motor for moving the support, wherein the cylinder is controlled to move the piston rod toward the one end and support it on the support, thereby generating a pressing force acting from the piston rod toward the one end side and acting on the support, and a first control is performed to control the pressing force to be a first pressure, and then the motor is controlled to move the support together with the piston rod toward the one end side, causing the crimping head to crimp a component onto a substrate, and in the first control, the pressing force is controlled to be a second pressure greater than the first pressure, and then the pressing force is controlled to be the first pressure. Effect of the Invention

[0008] According to the present invention, it is possible to provide a component compression bonding device and the like that can prevent inappropriate compression bonding of a component to a substrate. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing the configuration of a component crimping device according to an embodiment. [Diagram 2] FIG. 2 is a diagram for explaining the operation of the piston rod and the support body included in the component crimping device according to the embodiment. [Diagram 3] FIG. 3 is a diagram for explaining the pressure bonding time. [Figure 4] FIG. 4 is a flowchart showing a processing procedure of the component crimping device according to the embodiment. [Diagram 5] FIG. 5 is a diagram for explaining a specific example of a change in pressure in the first mode. [Figure 6] FIG. 6 is a diagram for explaining a specific example of a change in pressure in the second mode. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (How the present invention was arrived at) Conventionally, when crimping components using a cylinder, the pressure application operation is performed by lowering the crimping head to the pressure application position with a load set in the equipment, regardless of the magnitude of the load applied to the component when crimping the component to the substrate.

[0011] Here, in recent years, when producing small panels for smart watches and the like, it is expected that a load lower than that of the past will be applied to the parts. At this time, due to the influence of the sliding resistance of the cylinder that operates the crimping head, the descending speed of the piston rod decreases, and the piston rod may not follow the operating speed of the support (head axis) that prevents the piston rod from suddenly descending. Also, conventionally, the crimping time (pressurization time) for crimping a part with a crimping head is measured after the support has completed its descent to a predetermined position. In other words, since the crimping time is measured according to the position of the support, if the piston rod does not move so as to be supported by the support, a problem occurs in which the actual crimping time is shorter than the desired time.

[0012] Therefore, in order to solve such problems, the inventors of the present application have come up with the present invention.

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component arrangement and connection forms, steps, and order of steps shown in the following embodiments are merely examples and are not intended to limit the present invention. Furthermore, among the components in the following embodiments, components that are not described in the independent claims will be described as optional components.

[0014] In addition, each figure is a schematic diagram and is not necessarily illustrated precisely. Therefore, for example, the scales and the like do not necessarily match in each figure. In addition, in each figure, substantially the same configuration is given the same reference numeral, and duplicated explanations are omitted or simplified.

[0015] In the present specification and drawings, the X-axis, the Y-axis, and the Z-axis represent three axes of a three-dimensional Cartesian coordinate system. In the following embodiments, the Z-axis direction is defined as the up-down direction (vertical direction), and the positive direction of the Z-axis is defined as the upward direction.

[0016] In addition, the terms "above" and "below" apply not only to cases where two components are arranged with a gap between them and another component is present between the two components, but also to cases where two components are arranged in close contact with each other and the two components are in contact with each other.

[0017] In addition, in this specification, ordinal numbers such as "first" and "second" do not refer to the number or order of components, unless otherwise specified, but are used for the purpose of avoiding confusion between and distinguishing between components of the same type.

[0018] In addition, in this specification, when a comparison is made, for example, as being equal to or greater than a threshold value and being smaller than a threshold value, this means that the distinction is made on the boundary of the threshold value, and may mean being greater than the threshold value and being equal to or less than the threshold value, respectively.

[0019] (Embodiment) [composition] First, the configuration of the component crimping device 200 will be described.

[0020] FIG. 1 is a schematic diagram showing the configuration of a component crimping device 200 according to an embodiment.

[0021] Component pressure bonding apparatus 200 is an apparatus that pressure bonds (that is, mounts) component 160 onto substrate 150. A production system that includes component pressure bonding apparatus 200 is a system that produces display panels such as liquid crystal displays.

[0022] An example of the substrate 150 is a display panel using a glass substrate or the like.

[0023] Examples of the component 160 include flexible components such as TCP (Tape Carrier Package) and FPC (Flexible Printed Circuits), and IC (Integrated Circuit) chips.

[0024] The production system is composed of, for example, an ACF (Anisotropic Conductive Film) attachment device, a temporary pressure bonding (component placement) device, a component pressure bonding device 200, and a conveying device.

[0025] The ACF attachment device is a device that attaches ACF tape to electrode terminal portions provided on the periphery of a substrate 150 such as a glass plate having electrode terminals.

[0026] Here, "ACF tape" refers to a tape-shaped anisotropic conductive film, made of a material that combines fine conductive metal particles with a thermosetting resin. By pressing under conditions that correspond to the type, size, and other properties of the ACF tape, the terminals arranged above and below are joined while maintaining conductivity, and then hardened.

[0027] The temporary pressure bonding device is a device that attaches the component 160 to the terminals of the electrodes on the peripheral edge of the substrate 150 to which the ACF tape is attached.

[0028] The transport device is a device that transports the substrate 150 between the ACF attachment device, the temporary pressure bonding device, and the component pressure bonding device 200.

[0029] The component pressure-bonding device 200 is a so-called full-pressure bonding device, which presses the component 160 and the substrate 150 to which the component 160 is attached under predetermined pressure-bonding conditions via the ACF tape attached to the peripheral edge of the substrate 150, thereby pressure-bonding the substrate 150 and the component 160 together. As a result, the ACF tape hardens and establishes electrical continuity between the electrode terminals of the substrate 150 and the electrode terminals of the component 160.

[0030] Here, the bonding conditions refer to conditions for pressing the component 160 (i.e., conditions for pressing the component 160 to the substrate 150). The bonding conditions include, for example, the time for pressing the component 160 to the substrate 150 (bonding time), the temperature at which the pressing is performed, and the pressure at which the pressing is performed.

[0031] Specifically, the component crimping device 200 is a device that crimps the substrate 150 and the component 160 supported by the support stage 131. In this embodiment, the component crimping device 200 crimps the component 160 onto the substrate 150, by pressing the substrate 150, which has a lower end portion supported by the backup section 201a and has the component 160 placed above the end portion, from above with the crimping head 203. The component crimping device 200 includes a base 201, a backup section 201a, a support 202, the crimping head 203, a cylinder 205, a stopper 211, a pressure control section 213, a motor 214, a support 220, and a control device 230.

[0032] The base 201 is a base for supporting the cylinder 205 (more specifically, the main body 206), the motor 214, etc. On the base 201, a backup part 201a and a support 202 are installed.

[0033] The backup unit 201a is a support unit that supports the substrate 150. Specifically, the backup unit 201a is a backup stage that supports from below the peripheral portion of the substrate 150 to which the component 160 is bonded, and supports the component 160 when it is pressed against the substrate 150.

[0034] The support pillar 202 is a columnar member that is erected on the base 201. The support pillar 202 includes a ball screw 218 and a movement guide 204.

[0035] The ball screw 218 is a columnar member having a thread groove that screws into the support 220 and supports the support 220 movably in the extension direction of the ball screw 218 .

[0036] The movement guide 204 is a guide that restricts the movement of the crimping head 203 relative to the component 160 in the direction along the support 202 .

[0037] Cylinder 205 is a component provided on support 202, which generates a pressing force for pressing substrate 150 and component 160 together. In this embodiment, cylinder 205 is an air cylinder which generates a pressing force by air supplied from pressure control unit 213 having a supply unit for supplying air such as a pump. Cylinder 205 includes main body 206, piston 207, and piston rod 208.

[0038] The main body 206 is a cylinder tube fixedly provided to the support 202. Specifically, the main body 206 is fixedly disposed on the support 202 so that its relative positional relationship with the support 202 does not change. The main body 206 is a hollow cylinder through which gas (e.g., air), which is a fluid that serves as a pressure transmission medium, flows in and out.

[0039] The fluid that is the pressure transmission medium may be either a compressed fluid such as a gas or an incompressible fluid such as a liquid. In the present embodiment, air is supplied to the cylinder 205, but other gases may be supplied.

[0040] Piston 207 is a disk-shaped part that reciprocates inside main body 206. Air is used to apply pressure to piston 207 to press substrate 150 and component 160. A ring member 207a is attached to the outer circumferential surface of piston 207 that comes into contact with main body 206 to improve airtightness, ensure smooth movement, and the like.

[0041] Piston rod 208 is a columnar member that is connected to piston 207 and reciprocates in conjunction with the reciprocating motion of piston 207. Piston rod 208 is provided movably along support column 202. Specifically, piston rod 208 is a columnar member that extends in a direction parallel to the extending direction of support column 202, and is arranged to be movable (movable up and down) in the direction parallel to the extending direction of support column 202. In addition, piston rod 208 extends to both sides of piston 207 in the sliding direction of piston 207.

[0042] The crimping head 203 is attached to one end (the end on the Z-axis negative side in this embodiment) in the longitudinal direction (the Z-axis direction in this embodiment) of the piston rod 208, and is a head for pressing the substrate 150 supported by the backup part 201a to crimp the component 160 to the substrate 150. Specifically, the crimping head 203 is attached to one end (the tip end) on the side where the substrate 150 and the component 160 are arranged, out of both ends located in the extension direction of the piston rod 208, and presses the component 160 against the substrate 150 supported by the backup part 201a, thereby crimping the component 160 to the substrate 150. The crimping head 203 moves in conjunction with the movement of the piston rod 208 along the extension direction of the support 202. The crimping head 203 is also provided with a heater for thermally bonding the component 160 to the substrate 150 via the ACF tape.

[0043] Stopper 211 is a member provided at the other end (the upper end in this embodiment) located opposite to one end of piston rod 208. Stopper 211 is fixed to piston rod 208.

[0044] The support 220 is a member for supporting the piston rod 208. Specifically, the support 220 is provided movably along the support column 202, and supports the piston rod 208 from one end side of the piston rod 208 via the stopper 211. In other words, the support 220 is a member for supporting the upper end of the piston rod 208 from the lower end side by supporting the lower end of the stopper 211. Specifically, the support 220 is provided movably along the support column 202, and supports the piston rod 208 from one end side via the stopper 211. More specifically, the support 220 supports the stopper 211 from the side opposite to the pressure direction (Z-axis negative direction in this embodiment) by the cylinder 205, and supports the piston rod 208 via the stopper 211. The support 220 is screwed with the ball screw 218, and moves in a direction parallel to the extending direction of the support column 202 in conjunction with the rotation of the ball screw 218. This movement causes the piston rod 208 supported by the support 220 and the crimping head 203 and other components provided on the piston rod 208 to move along the support 202.

[0045] The pressure control unit 213 is a device for controlling the pressing force of the cylinder 205 so that the cylinder 205 generates a pressing force necessary to apply a target load to the substrate 150 and the component 160. The pressure control unit 213 is realized by, for example, a pump (air source) that supplies air to the cylinder 205, a regulator such as an electromagnetic valve that controls the amount of air supplied, a solenoid valve, etc.

[0046] The motor 214 is a motor that moves the support 220. Specifically, the motor 214 moves the support 220 along the support column 202. More specifically, the motor 214 is a drive source that rotates the ball screw 218 and moves the support 220, which is screwed with the ball screw 218, along the support column 202. That is, the motor 214 moves the support 220 in a direction parallel to the extension direction of the piston rod 208. In this embodiment, the motor 214 is a servo motor (more specifically, an AC servo motor) equipped with an encoder and a driver.

[0047] The control device 230 is a control device that issues commands to a driver for controlling the driving of the motor 214, and controls the pressure control unit 213 to control the pressing force of the cylinder 205. The control device 230 controls the start of movement of the support 220, the speed of movement, and the position after movement by controlling the amount of rotation of the motor 214 based on information such as torque from the motor 214. In addition, the control device 230 acquires, for example, information indicating the total thickness of the substrate 150 and the component 160, and information indicating the pressing force generated by the cylinder 205 from the storage unit 235, etc., and determines the position where the support 220 should be placed based on the acquired information.

[0048] The control device 230 is realized, for example, by an interface to which control lines for controlling the pressure control unit 213 and the motor 214 are connected, a non-volatile memory in which a program is stored, a volatile memory which is a temporary storage area for executing the program, an input / output port for transmitting and receiving signals, and a processor which executes the program.

[0049] The control device 230 includes a control unit 232 and a storage unit 235 .

[0050] The control unit 232 is a processing unit that controls the cylinder 205 (more specifically, the pressure control unit 213) and the motor 214. Specifically, the control unit 232 controls the cylinder 205 and the motor 214 to move the support 220 together with the piston rod 208 to one end side, thereby causing the crimping head 203 to crimp the component 160 onto the substrate 150. More specifically, the control unit 232 controls the cylinder 205 and the motor 214 to move the support 220 together with the piston rod 208 to one end side of the piston rod 208, thereby causing the crimping head 203 to crimp the component 160 onto the substrate 150 supported by the backup unit 201a.

[0051] FIG. 2 is a diagram for explaining the operation of piston rod 208 and support body 220 included in component crimping device 200 according to the embodiment.

[0052] 2(a), for example, before the component crimping device 200 crimps the component 160 onto the substrate 150, the piston rod 208 is positioned in a state in which the stopper 211 located at the other end of the piston rod 208 is not in contact with the support body 220. That is, in this state, the piston rod 208 is not supported by the support body 220.

[0053] 2(b), when the component crimping device 200 crimps the component 160 onto the substrate 150, the control unit 232 controls the cylinder 205 to move the piston rod 208 downward, so that the stopper 211 located at the other end of the piston rod 208 comes into contact with the support 220. As a result, the piston rod 208 is supported by the support 220. At this time, a pressing force acting from the piston rod 208 to the support 220 and directed toward one end of the piston rod 208 is generated in the support 220.

[0054] Next, as shown in FIG. 2C, the control unit 232 controls the motor 214 to move the piston rod 208 downward and also move the support 220 downward. As a result, the control unit 232 causes the crimping head 203 to crimp the component 160 onto the substrate 150. That is, the crimping head 203 comes into contact with the component 160 in a state in which a pressing force toward one end side of the piston rod 208 is generated. Furthermore, as the support 220 is moved downward, the pressing force applied to the support 220 is applied to the component 160. As a result, the component 160 can be crimped onto the substrate 150 while a load from the cylinder 205 (more specifically, the piston rod 208) according to the pressing force is applied to the substrate 150 and the component 160.

[0055] In this embodiment, the control unit 232 performs control to change the pressing force based on predetermined conditions from when the stopper 211 contacts the support 220, to when the piston rod 208 moves downward together with the support 220, to when the crimping head 203 crimps the component 160 onto the substrate 150. Specifically, the control unit 232 performs control to change the air pressure supplied to the cylinder 205 for controlling the pressing force.

[0056] Fig. 3 is a diagram for explaining the compression time. Specifically, Fig. 3(a) is a graph that typically shows the change in height of the compression head 203 over time. Fig. 3(b) is a diagram for explaining the air pressure in the cylinder 205. Fig. 3(c) is a graph that typically shows the change in load applied to the component 160 when the compression head 203 presses the component 160 against the substrate 150 over time.

[0057] As shown in FIG. 3, at time T1, air starts to be supplied to the pressurized port of cylinder 205. In other words, when air (also called air pressure) starts to be supplied to main body 206 so as to move piston rod 208 downward, motor 214 moves support 220 downward together with piston rod 208, and the height of crimping head 203 decreases.

[0058] In this embodiment, for example, when the bonding head 203 is moved to a predetermined position (predetermined height) at time T2, the air pressure supplied to the cylinder 205 is reduced. For example, at time T2, the air pressure is reduced from the second air pressure to the first air pressure. After waiting for a predetermined time from time T2 to time T3, the bonding head 203 is moved in this state with the air pressure reduced, and the bonding head 203 bonds the component 160 to the board 150 for the bonding time from time T4 to time T5. This applies a load (set load) appropriate for bonding the component 160 to the board 150 to the component 160 to the board 150 to the component 160. By maintaining this state, the load is applied to the component 160 for the bonding time required for bonding.

[0059] The load changes depending on the air pressure. In the example shown in Fig. 3, the air pressure required to apply the set load is the first air pressure. Before causing the crimping head 203 to perform crimping, the control unit 232 controls the cylinder 205 (more specifically, the pressure control unit 213) so that the air pressure is higher than the air pressure required to apply the set load.

[0060] As described above, in this embodiment, the control unit 232 performs a first control in which the control unit 232 controls the cylinder 205 to move the piston rod 208 toward one end side and support the support 220, thereby generating a pressing force from the piston rod 208 toward the one end side acting on the support 220, and controls the pressing force to become a first pressure, and then performs a second control in which the control unit 232 controls the motor 214 to move the support 220 together with the piston rod 208 toward the one end side, thereby causing the crimping head 203 to crimp the component 160 onto the substrate 150.

[0061] For example, the first control is the control from time T1 to time T3 shown in Fig. 3. Moreover, for example, the second control is the control after time T3 shown in Fig. 3.

[0062] Here, in the first control, the control unit 232 controls the pressing force to become a second pressure greater than the first pressure, and then controls the pressing force to become the first pressure. For example, the first pressure is a pressing force corresponding to the first air pressure, and the second pressure is a pressing force corresponding to the second air pressure. For example, the control unit 232 controls the air pressure of the piston 207 so that the first pressure or the second pressure is generated.

[0063] Also, for example, in the first control, when the first pressure is smaller than a predetermined threshold, the control unit 232 controls the pressing force to a second pressure larger than the first pressure, and then controls the pressing force to the first pressure. On the other hand, for example, in the first control, when the first pressure is equal to or larger than a predetermined threshold, the control unit 232 controls the pressing force to the first pressure without controlling the pressing force to the second pressure.

[0064] Also, for example, in the first control, the control unit 232 controls the pressing force to become the second pressure, and then controls the motor 214 to move the support body 220 together with the piston rod 208 to a predetermined position toward one end side, thereby controlling the pressing force to become the first pressure.

[0065] Also, for example, in the first control, the control unit 232 moves the support 220 to a predetermined position, and then controls the pressing force to be the first pressure without moving the support 220 from the predetermined position for a predetermined time (from time T2 to time T3 in the example shown in FIG. 3).

[0066] Note that specific values ​​such as the first pressure, the second pressure, the first air pressure, the second air pressure, the predetermined time, and the predetermined threshold value may be arbitrarily determined and are not particularly limited. For example, the first air pressure is determined to be 30 N, and the second air pressure is determined to be 100 N. For example, when the set load is smaller than 50 N, the control unit 232 controls the air pressure to be the second air pressure before crimping, and then controls the air pressure to be the first air pressure. On the other hand, when the set load is greater than 50 N, the control unit 232 controls the air pressure to be the first air pressure without controlling the air pressure to be the second air pressure before crimping.

[0067] Also, for example, the predetermined time is determined to be 0.5 seconds.

[0068] It is not necessary to provide such a predetermined time. For example, the pressing force may be controlled so as to change from the second pressure to the first pressure while the support 220 is being lowered.

[0069] Furthermore, the moving speed and the moving amount of the support 220 may be arbitrarily determined in advance, and are not particularly limited. For example, the control unit 232 controls the motor 214 so that the moving speed of the support 220 in the first control is faster than the moving speed of the support 220 in the second control. Also, for example, the control unit 232 controls the motor 214 so that the moving amount of the support 220 in the first control is greater than the moving amount of the support 220 in the second control.

[0070] The control unit 232 is realized by, for example, a memory that stores a control program and a processor such as a CPU (Central Processing Unit) that executes the control program.

[0071] The memory unit 235 is a storage device that stores various data necessary for the component bonding process, such as information indicating a threshold value, the size of the substrate 150, the type of component 160 to be mounted on the substrate 150, the mounting position, the mounting direction, the operation of each device, the timing of the operation, and the timing of transporting the substrate 150.

[0072] The storage unit 235 is realized by, for example, a hard disk drive (HDD) or a semiconductor memory.

[0073] [Processing Procedure] Next, the process steps of the component crimping device 200 will be described.

[0074] Fig. 4 is a flowchart showing a process procedure of component crimping apparatus 200 according to an embodiment. Specifically, Fig. 4 is a flowchart showing a specific example of a process procedure executed by control unit 232 by controlling cylinder 205 (more specifically, pressure control unit 213) and motor 214.

[0075] First, the control unit 232 determines whether or not a first pressure, which is a pressing force generated on the support 220 when mounting the component 160 on the substrate 150, is smaller than a predetermined threshold value (S10). The first pressure is a value that is arbitrarily determined according to, for example, the type of panel to be produced. For example, a user inputs information indicating the first pressure and information indicating the predetermined threshold value using a user interface such as a keyboard. The control unit 232 acquires this information and performs the determination of step S10.

[0076] When the control unit 232 determines that the first pressure is smaller than the predetermined threshold value (Yes in S10), it executes the process in the first mode. Specifically, when the first pressure is smaller than the predetermined threshold value, the control unit 232 executes the following steps S20 to S50.

[0077] More specifically, the control unit 232 performs a first control (S20 to S40) in which the control unit 232 controls the cylinder 205 to move the piston rod 208 toward one end side and support the support 220, thereby generating a pressing force from the piston rod 208 toward the one end side acting on the support 220, and controls the pressing force to become a first pressure.

[0078] In this embodiment, the control unit 232 controls the cylinder 205 to support the piston rod 208 on the support 220 via the stopper 211. The control unit 232 also causes the pressure control unit 213 to supply a predetermined air pressure to the main body 206 so that the piston rod 208 moves downward, thereby supporting the lower end side of the stopper 211 on the support 220, thereby supporting the piston rod 208 fixed to the stopper 211 from the lower side on the support 220. As a result, the control unit 232 generates a second pressure acting from the piston rod 208 to the support 220.

[0079] In the first control, the control unit 232 controls the pressing force to be a second pressure greater than the first pressure (S20). The control unit 232 controls the pressure control unit 213 to supply air to the pressurizing side port of the main body unit 206 so as to generate the second pressure.

[0080] Next, while the second pressure is being generated, the control unit 232 controls the motor 214 to move (lower) the support 220 to a predetermined position (S30). As a result, the piston rod 208 moves (lowers) following the movement of the support 220.

[0081] Next, the control unit 232 controls the cylinder 205 to change the pressing force from the second pressure to the first pressure (S40). The control unit 232 controls the pressure control unit 213 to supply air to the pressurizing side port of the main body unit 206 so as to generate the first pressure.

[0082] At this time, the control unit 232 may control the motor 214 so that the support 220 does not move for a predetermined time.

[0083] The predetermined time may be determined arbitrarily and is not particularly limited.

[0084] Next, the control unit 232 controls the motor 214 to move the support 220 together with the piston rod 208 toward one end side, thereby performing a second control (S50) in which the crimping head 203 crimps the component 160 onto the substrate 150. In a state in which the first pressure is generated, the control unit 232 brings the crimping head 203 into contact with the component 160, and further moves the support 220 to apply a load corresponding to the first pressure that was acting on the support 220 to the component 160. As a result, the control unit 232 causes the crimping head 203 to crimp the component 160 onto the substrate 150 with the load corresponding to the first pressure.

[0085] On the other hand, when the control unit 232 determines that the first pressure is equal to or greater than the predetermined threshold (No in S10), it executes the process in the second mode. Specifically, when the first pressure is equal to or greater than the predetermined threshold, the control unit 232 executes the following steps S60 and S70.

[0086] First, the control unit 232 controls the cylinder 205 to move the piston rod 208 toward the one end side and support the support 220, thereby generating a pressing force acting from the piston rod 208 toward the one end side on the support 220, and performs control so that the pressing force becomes a first pressure. Here, in the second mode, the control unit 232 controls the pressing force to become the first pressure, rather than the second pressure (S60). Specifically, the control unit 232 controls the pressure control unit 213 to supply air to the pressurizing side port of the main body unit 206 so that the first pressure is generated.

[0087] Next, while generating the first pressure, the control unit 232 controls the motor 214 to move the support 220 together with the piston rod 208 toward one end side, causing the crimping head 203 to crimp the component 160 onto the substrate 150 (S70).

[0088] FIG. 5 is a diagram for explaining a specific example of the change in pressing force in the first mode. Specifically, FIG. 5(a) is a graph that typically shows the time change in the downward driving force applied to the piston rod 208 in the first mode. FIG. 5(b) is a graph that typically shows the time change in the height of the crimping head 203 in the first mode. FIG. 5(c) is a graph that typically shows the time change in the force with which the piston rod 208 presses down the support 220 (i.e., the pressing force acting on the support 220) in the first mode. FIG. 5(d) is a graph that typically shows the time change in the height of the support 220 in the first mode. FIG. 5(e) is a graph that typically shows the time change in the load applied to the component 160 when the crimping head 203 presses the component 160 against the substrate 150 in the first mode.

[0089] First, at time t1, the control unit 232 controls the cylinder 205 (more specifically, the pressure control unit 213) to start the supply of air to the pressurized port of the cylinder 205, in other words, starts the supply of air (also called the supply of air pressure) to the main body 206 so as to move the piston rod 208 downward by the first control. This causes the height of the crimping head 203 to decrease without changing the height of the support 220. In other words, the piston rod 208 moves downward.

[0090] Next, at time t2, the stopper 211 comes into contact with the support 220. This generates a pressing force acting on the support 220. In the first mode, the control unit 232 controls the cylinder 205 so that the pressing force generated at this time becomes the second pressure.

[0091] Next, at time t3, while the second pressure is being generated, the control unit 232 controls the motor 214 to move the support 220 downward to a predetermined position.

[0092] Next, at time t4, the control unit 232 moves the support 220 downward to a predetermined position, and then stops the support 220 at the predetermined position by controlling the motor 214. In addition, the control unit 232 controls the cylinder 205 so that the pressing force acting on the support 220 changes from the second pressure to the first pressure.

[0093] Also, for example, the control unit 232 controls the motor 214 to stop the support 220 at a predetermined position for a predetermined period of time from time t4 to time t5, while controlling the cylinder 205 to set the pressing force acting on the support 220 to the first pressure.

[0094] Next, at time t5, the control unit 232 moves the support 220 downward by controlling the motor 214. For example, the control unit 232 controls the motor 214 so that the descent speed of the support 220 from time t5 to time t6 is slower than the descent speed of the support 220 from time t3 to time t4.

[0095] Next, at time t6, the compression head 203 comes into contact with the component 160. This causes the compression head 203 to start compressing the component 160 onto the board 150.

[0096] The control unit 232 lowers the support 220 to a position where the piston rod 208 (more specifically, the stopper 211) is not supported by the support 220. As a result, the first pressure acting on the support 220 no longer acts on the support 220, and instead a load corresponding to the first pressure is applied to the component 160. In other words, the first pressure, which is the pressing force acting on the support 220, is applied to the component 160 as a load.

[0097] FIG. 6 is a diagram for explaining a specific example of the change in pressing force in the second mode. Specifically, FIG. 6(a) is a graph that typically shows the time change in the downward driving force applied to the piston rod 208 in the second mode. FIG. 6(b) is a graph that typically shows the time change in the height of the crimping head 203 in the second mode. FIG. 6(c) is a graph that typically shows the time change in the force (pressing force) with which the piston rod 208 presses down the support 220 in the second mode. FIG. 6(d) is a graph that typically shows the time change in the height of the support 220 in the second mode. FIG. 6(e) is a graph that typically shows the time change in the load applied to the component 160 when the crimping head 203 presses the component 160 against the substrate 150 in the second mode.

[0098] First, at time t11, the control unit 232 controls the cylinder 205 (more specifically, the pressure control unit 213) to start the supply of air to the pressurized port of the cylinder 205, in other words, starts the supply of air (also called the supply of air pressure) to the main body 206 so as to move the piston rod 208 downward. This causes the height of the crimping head 203 to decrease without changing the height of the support 220. In other words, the piston rod 208 moves downward.

[0099] Next, at time t12, the stopper 211 and the support 220 come into contact with each other. This generates a pressing force acting on the support 220. In the second mode, the control unit 232 controls the cylinder 205 so that the pressing force generated at this time becomes the first pressure. Thus, in the second mode, unlike the first mode, the pressing force is not controlled to become the second pressure but is controlled to become the first pressure.

[0100] Next, at time t13, in a state in which the first pressure is being generated, the control unit 232 controls the motor 214 to move the support 220 downward.

[0101] Next, at time t14, the control unit 232 controls the motor 214 so that the speed at which the support 220 descends from time t14 to time t15 is slower than the speed at which the support 220 descends from time t13 to time t14.

[0102] Next, at time t15, the compression head 203 comes into contact with the component 160. This causes the compression head 203 to start compressing the component 160 onto the board 150.

[0103] The control unit 232 lowers the support 220 to a position where the piston rod 208 (more specifically, the stopper 211) is not supported by the support 220. As a result, the first pressure acting on the support 220 no longer acts on the support 220, and instead, a load corresponding to the first pressure is applied to the part 160.

[0104] [Effects, etc.] Below, examples of techniques that can be obtained from the disclosure of this specification will be given, and effects and the like that can be obtained from the exemplified techniques will be described.

[0105] The first technique includes a cylinder 205 having a piston rod 208, a crimping head 203 attached to one end of the piston rod 208 in the longitudinal direction, a support 220 for supporting the piston rod 208, a motor 214 for moving the support 220, and a control unit 232 for controlling the cylinder 205 and the motor 214 to move the support 220 together with the piston rod 208 toward the one end side, thereby causing the crimping head 203 to crimp the component 160 onto the substrate 150. The control unit 232 controls the cylinder 205 to move the piston rod 208. Component crimping device 200 performs a first control in which support 220 is moved toward one end side and supported by piston rod 208, thereby generating a pressing force acting on support 220 toward one end side from piston rod 208, and controls the pressing force to become a first pressure. Then, motor 214 is controlled to move support 220 together with piston rod 208 toward the one end side, and crimping head 203 performs a second control in which crimping head 203 crimps component 160 onto substrate 150. In the first control, the pressing force is controlled to become a second pressure greater than the first pressure, and then the pressing force is controlled to become the first pressure.

[0106] In a configuration in which the component 160 is pressure-bonded to the substrate 150 using the cylinder 205, a support 220 may be provided to restrict the movement of the piston rod 208 so that the piston rod 208 does not move suddenly. In such a configuration, for example, the movement speed of the piston rod 208 is controlled by appropriately controlling the motor 214 for moving the support 220.

[0107] Here, if the load applied to the component 160 when the component 160 is pressure-bonded to the substrate 150 is too small, the effect of the sliding resistance of the cylinder 205 becomes large, and the moving speed of the piston rod 208 becomes slow. For example, when the load (set load) is small and conventional control is performed, the driving force of the piston rod 208 corresponding to (a) of FIG. 5 becomes smaller than when the set load is large (also called normal time). Also, the height of the pressure-bonding head 203 corresponding to (b) of FIG. 5 falls more gradually than in normal time. Therefore, the contact time between the pressure-bonding head 203 and the component 160 becomes slower than in normal time. Also, the pressing force corresponding to (c) of FIG. 5 is not generated because the piston rod 208 does not follow the speed at which the support 220 falls. Also, the start of application of the load to the component 160 by the pressure-bonding head 203 corresponding to (e) of FIG. 5 becomes slower than in normal time. On the other hand, there is no change in the movement of the support 220 corresponding to (d) of FIG. 5 compared to normal time.

[0108] Conventionally, the measurement of the compression time for the component 160 to be compressed by the compression head 203 is started after the support 220 has been lowered to a height at which the compression head 203 applies pressure to the component 160. In other words, since the compression time is measured according to the position of the support 220, if the piston rod 208 does not move so as to be supported by the support 220, a problem occurs in that the actual compression time becomes shorter than the time originally required for compression. Also, if the movement speed of the piston rod 208 is slow, the time required for compression becomes longer, and the takt time required for production becomes longer. Therefore, for example, the control unit 232 quickly moves the piston rod 208 using a high pressure (second pressure), and then controls the pressure to an appropriate pressure (first pressure) for compression. This prevents the compression time from becoming shorter than expected. Therefore, the component compression device 200 can prevent the component from being inappropriately compressed onto the substrate 150. Also, it can prevent the takt time of production from becoming longer due to the slow movement of the piston rod 208.

[0109] Technique 2 is the component crimping apparatus 200 described in Technique 1, in which, in the first control, when the first pressure is smaller than a predetermined threshold value, the control unit 232 controls the pressing force to a second pressure greater than the first pressure, and then controls the pressing force to the first pressure.

[0110] If the pressing force is relatively high, the piston rod 208 is moved quickly even if there is sliding resistance. Therefore, when the first pressure is smaller than a predetermined threshold value, the control unit 232 controls the pressing force to a second pressure greater than the first pressure before controlling it to the first pressure. This allows the control unit 232 to appropriately control the pressing force when it is necessary to increase the pressing force.

[0111] Technique 3 is the component crimping apparatus 200 described in Technique 1 or 2, in which, in the first control, when the first pressure is equal to or greater than a predetermined threshold value, the control unit 232 controls the pressing force to be the first pressure, rather than controlling the pressing force to be the second pressure.

[0112] According to this, for example, when the pressing force during compression is high and there is no need to increase the pressing force, it is possible to prevent the pressing force from being unnecessarily increased, thereby preventing the component from being inappropriately pressed onto the substrate 150.

[0113] Technique 4 is the component crimping device 200 described in any one of Techniques 1 to 3, in which the control unit 232 controls the pressing force to become the second pressure in the first control, and then controls the motor 214 to move the support body 220 together with the piston rod 208 to a predetermined position toward one end side, thereby controlling the pressing force to become the first pressure.

[0114] This makes it possible to prevent inappropriate pressure bonding of components to the substrate 150, and also to prevent the tact time of production from becoming longer due to slow movement of the piston rod 208.

[0115] Technique 5 is the component crimping device 200 described in any one of Techniques 1 to 4, in which, in the first control, the control unit 232 controls the pressing force to be a first pressure without moving the support 220 from the predetermined position for a predetermined time after moving the support 220 to a predetermined position.

[0116] According to this, by appropriately setting the predetermined time, it is possible to prevent the first pressure from being applied when the component 160 is pressure-bonded to the substrate 150.

[0117] Technique 6 is the component crimping device 200 according to any one of Techniques 1 to 5, in which the control unit 232 controls the motor 214 so that the movement speed of the support 220 in the first control is faster than the movement speed of the support 220 in the second control.

[0118] This makes it possible to prevent inappropriate pressure bonding of components to the substrate 150, and further prevents the tact time of production from becoming longer due to slow movement of the piston rod 208.

[0119] Technique 7 is the component crimping device 200 according to any one of Techniques 1 to 6, in which the control unit 232 controls the motor 214 so that the amount of movement of the support 220 in the first control is greater than the amount of movement of the support 220 in the second control.

[0120] This makes it possible to prevent inappropriate pressure bonding of components to the substrate 150, and further prevents the tact time of production from becoming longer due to slow movement of the piston rod 208.

[0121] The eighth technique is a component crimping method performed by a component crimping device 200 including a cylinder 205 having a piston rod 208, a crimping head 203 attached to one end of the piston rod 208 in the longitudinal direction, a support 220 for supporting the piston rod 208, and a motor 214 for moving the support 220. ..., a support 220 for supporting the piston rod 208, and a motor 214 for moving the support 220. This is a component crimping method in which a first control (S20 to S40) is performed to generate a pressing force toward the end side and control the pressing force to be a first pressure, and then a second control (S50) is performed to move the support 220 together with the piston rod 208 toward one end side by controlling the motor 214, causing the crimping head 203 to crimp the component 160 onto the substrate 150, and in the first control, the pressing force is controlled to be a second pressure greater than the first pressure (S20), and then the pressing force is controlled to be the first pressure (S40).

[0122] This provides the same effects as those of component crimping device 200.

[0123] In addition, these comprehensive or specific aspects may be realized by a system, a method, an integrated circuit, a computer program, or a recording medium such as a computer-readable CD-ROM, or may be realized by any combination of the system, the method, the integrated circuit, the computer program, and the recording medium. For example, the present invention may be realized as a control device 230 including a control unit 232 that performs a first control in which the cylinder 205 is controlled to move the piston rod 208 to one end side and support the support 220, thereby generating a pressing force acting from the piston rod 208 toward the one end side and controlling the pressing force to be a first pressure, and then controls the motor 214 to move the support 220 together with the piston rod 208 to the one end side, and causes the pressure bonding head 203 to press the component 160 onto the substrate 150, and controls the pressing force to be a second pressure greater than the first pressure in the first control, and then controls the pressing force to be the first pressure. The present invention may also be realized as a control method for executing the above-mentioned processing procedure executed by the control unit 232. The present invention may also be realized as a program for causing a computer to execute the control method. For example, the present invention may also be realized as a computer-readable non-transitory recording medium that stores the program.

[0124] (Other embodiments) Although the component crimping device and the like according to the present embodiment have been described above based on the above embodiment, the present invention is not limited to the above embodiment.

[0125] In the above embodiment, component crimping device 200 includes one crimping head 203, but may include multiple crimping heads. For example, if the component crimping device includes multiple pairs of a crimping head and a cylinder, and each pair is controlled (height controlled) by one motor, the total value of the pressing force generated by each cylinder may be used to determine whether each cylinder is functioning normally.

[0126] Also, for example, the motor 214 need not be a servo motor, but may be a pulse motor, a linear motor, or the like.

[0127] Also, for example, in the above embodiment, all or some of the components of the processing unit included in the control device 230 may be configured with dedicated hardware, or may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU (Central Processing Unit) or a processor reading and executing a software program recorded on a recording medium such as a HDD or semiconductor memory.

[0128] Furthermore, the processing unit included in the control device 230 may be configured with one or more electronic circuits. Each of the one or more electronic circuits may be a general-purpose circuit or a dedicated circuit.

[0129] The one or more electronic circuits may include, for example, a semiconductor device, an IC, or an LSI (Large Scale Integration). The IC or LSI may be integrated into one chip or into multiple chips. Here, we refer to it as an IC or an LSI, but depending on the degree of integration, it may be called a system LSI, a VLSI (Very Large Scale Integration), or an ULSI (Ultra Large Scale Integration). Also, a Field Programmable Gate Array (FPGA) that is programmed after the LSI is manufactured can be used for the same purpose.

[0130] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art may think of, and forms realized by arbitrarily combining the components and functions of each embodiment within the scope that does not deviate from the spirit of the present invention. [Industrial Applicability]

[0131] The present invention can be used in a crimping device that crimps a component onto a substrate. [Explanation of symbols]

[0132] 131 Support Stage 150 Substrates 160 parts 200 Component crimping device 201 Foundation 201a Backup Department 202 Post 203 Crimping head 204 Travel Guide 205 Cylinder 206 Main body 207 Piston 207a Ring member 208 Piston rod 211 Stopper 213 Pressure control section 214 Motor 218 Ball screw 220 Support 230 Control device 232 Control section 235 Storage section

Claims

1. A cylinder having a piston rod; A crimping head attached to one end of the piston rod in a longitudinal direction; A support for supporting the piston rod; A motor for moving the support; a control unit that controls the cylinder and the motor to move the support body together with the piston rod toward the one end side, thereby causing the crimping head to crimp a component onto a substrate; The control unit is A first control is performed to control the cylinder to move the piston rod toward the one end side and support the piston rod on the support, thereby generating a pressing force from the piston rod toward the one end side acting on the support, and to control the pressing force to become a first pressure. a second control is performed to move the support body together with the piston rod toward the one end side by controlling the motor, and to cause the crimping head to crimp the component onto the substrate; In the first control, the pressing force is controlled to become a second pressure greater than the first pressure, and then the pressing force is controlled to become the first pressure. Component crimping device.

2. When the first pressure is smaller than a predetermined threshold value, the control unit controls the pressing force to become a second pressure greater than the first pressure, and then controls the pressing force to become the first pressure, in the first control. The component crimping device according to claim 1 .

3. When the first pressure is equal to or greater than the predetermined threshold value, the control unit does not control the pressing force to be the second pressure, but controls the pressing force to be the first pressure. The component crimping device according to claim 2 .

4. The control unit is In the first control, the pressing force is controlled to become the second pressure, and then the motor is controlled to move the support body together with the piston rod to a predetermined position toward the one end portion, thereby controlling the pressing force to become the first pressure. The component crimping device according to any one of claims 1 to 3.

5. The control unit is In the first control, after the support is moved to the predetermined position, the support is not moved from the predetermined position for a predetermined time, and the pressing force is controlled to be the first pressure. The component crimping device according to claim 4.

6. the control unit controls the motor such that a moving speed of the support in the first control is faster than a moving speed of the support in the second control. The component crimping device according to claim 4.

7. the control unit controls the motor such that a movement amount of the support in the first control is greater than a movement amount of the support in the second control. The component crimping device according to claim 4.

8. A cylinder having a piston rod; A crimping head attached to one end of the piston rod in a longitudinal direction; A support for supporting the piston rod; A component crimping method performed by a component crimping device including a motor that moves the support, A first control is performed to control the cylinder to move the piston rod toward the one end side and support the piston rod on the support, thereby generating a pressing force from the piston rod toward the one end side acting on the support, and to control the pressing force to become a first pressure. a second control is performed in which the motor is controlled to move the support body together with the piston rod toward the one end side, and the pressure bonding head is caused to pressure bond a component to a substrate; In the first control, the pressing force is controlled to become a second pressure greater than the first pressure, and then the pressing force is controlled to become the first pressure. Part crimping method.

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