Irradiation device

Abstract

To provide an irradiation device capable of irradiating an irradiation object with light beams from a plurality of directions.SOLUTION: An irradiation device 6 for irradiating an irradiation object 103 with a light beam 104 includes an irradiation part 30 for irradiating the light beam 104 in a predetermined direction, and a reflection part 40 arranged on the direction side of the irradiation part 30 and reflecting the light beam 104. The reflecting part 40 has a recessed part 43 recessed in the direction and capable of arranging the irradiating object 103 in a groove, and mirror surface parts 44a, 45a provided on a groove inner surface 4445 of the recessed part 43 and reflecting the light beam 104. The recessed portion 43 has a V-shaped groove shape in a cross section intersecting the direction.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to an irradiation device that irradiates an irradiation target with a light beam. [Background technology]

[0002] Electric wires with terminals have been proposed for use in communication between devices mounted on vehicles, power supply, etc. For example, in one conventional electric wire with terminal, the connection between the conductor core wire of the electric wire and the terminal is covered with an anticorrosive agent to prevent corrosion due to water ingress at such a connection (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-129067 Summary of the Invention [Problem to be solved by the invention]

[0004] One example of a method for covering the connection point between the conductor core wire of an electric wire and a terminal with an anticorrosive agent is to apply a liquid anticorrosive agent (hereinafter also referred to as an application agent) to the connection point and then harden the application agent. For example, an ultraviolet-curable resin can be used as such an anticorrosive agent. When an ultraviolet-curable resin is applied to the contact point between the conductor core wire of an electric wire and a terminal, the resin may spread not only over the top surface of the contact point but also near the side and bottom surfaces of the contact point. In this case, simply irradiating the top surface of the terminal with ultraviolet light may not properly harden the entire resin.

[0005] An object of the present invention is to provide an irradiation device capable of irradiating an irradiation target with light rays from a plurality of directions. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the irradiation device according to the present invention has the following features.

[0007] An irradiation device that irradiates an irradiation target with a light beam, an irradiation unit that irradiates the light beam in a predetermined direction; a reflecting section that is arranged to receive the light beam emitted by the irradiating section and that reflects the light beam, The reflecting portion is a recessed portion recessed in the direction so that the irradiation target can be placed in the groove; and a mirror surface portion provided on an inner surface of the groove of the recessed portion to reflect the light beam. It is an irradiation device. [Effects of the Invention]

[0008] According to the irradiation device of the present invention, when an irradiation target (for example, the terminal portion of a terminal-attached electric wire) is placed in the groove of the recess of the reflector and light rays (for example, ultraviolet light) are irradiated from the irradiation unit, the irradiated light rays not only hit the irradiation target directly but also hit the irradiation target after being reflected by the mirror surface of the reflector. Therefore, the irradiation device of this configuration can irradiate the irradiation target with light rays from multiple directions.

[0009] The present invention has been briefly described above. The details of the present invention will become clearer by reading the detailed description of the invention below in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a block diagram showing an embodiment of a corrosion prevention treatment device incorporating an irradiation device of the present invention. [Figure 2] FIG. 2 is a rear view of the conveying section shown in FIG. [Figure 3] FIG. 3 is a top view of the transport unit shown in FIG. [Figure 4] 4(a) to 4(d) are diagrams for explaining the flow of processing when the corrosion prevention processing device shown in FIG. 1 performs corrosion prevention processing on an electric wire with a terminal. [Figure 5] FIG. 5 is a perspective view showing the entire UV irradiation unit shown in FIG. [Figure 6] FIG. 6 is an enlarged view of part A in FIG. [Figure 7] FIG. 7 is a side view of part A in FIG. 5 as seen from the side. [Figure 8] FIG. 8 is a diagram corresponding to FIG. 7, showing a state in which each of the irradiation portion and the reflection portion constituting the UV irradiation unit has moved from its original position to the irradiation position. [Figure 9] FIG. 9 is a cross-sectional view taken along line BB in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] <Embodiment> Hereinafter, an embodiment of the present invention will be described with reference to the drawings. For convenience of explanation, "front," "rear," "left," "right," "upper," and "lower" will be defined as shown in Fig. 1 etc. The "front-rear direction," "left-right direction," and "upper-lower direction" are mutually orthogonal.

[0012] FIG. 1 is a block diagram showing an embodiment of a corrosion prevention treatment device 1 incorporating an application device (application unit 5) of the present invention. The corrosion prevention treatment device 1 shown in FIG. 1 is a device that applies a coating agent (corrosion prevention agent) 101 made of an ultraviolet-curable resin (UV-curable resin) to an end of a terminal-attached electric wire 100 (a so-called workpiece; see also FIG. 4). As shown in FIG. 4(a), the terminal-attached electric wire 100 includes an electric wire 102 and a terminal 103 attached to the end of the electric wire 102. The electric wire 102 has a coating 102A stripped from the end to expose a conductor core wire 102B. The terminal 103 is crimped to the coating 102A exposed at the end and the conductor core wire 102B. The corrosion prevention treatment device 1 covers a connection point between the conductor core wire 102B and the terminal 103 with the coating agent 101, thereby preventing corrosion at the connection point between the conductor core wire 102B and the terminal 103.

[0013] The corrosion prevention treatment device 1 includes a conveying unit 2, an electric wire supplying unit 3 that sets the electric wire with terminal 100 on the conveying unit 2, an imaging unit 4 that images the electric wire with terminal 100 conveyed by the conveying unit 2, an application unit 5 (see also Figure 4(b)) that applies an application agent 101 to the end of the electric wire with terminal 100 conveyed by the conveying unit 2, a UV irradiation unit 6 (see also Figure 4(c)) that irradiates the applied application agent 101 with ultraviolet light 104, a control unit 7 that controls each of these units, and a display unit 8.

[0014] The above-mentioned electric wire supply unit 3, imaging unit 4, coating unit 5, and UV irradiation unit 6 are arranged side by side in the left-right direction. From right to left, the electric wire supply unit 3, imaging unit 4, coating unit 5, and UV irradiation unit 6 are arranged in this order.

[0015] The configuration of the transfer unit 2 will be described. As shown in Figs. 2 and 3, the transfer unit 2 has four rear electric wire chucks 21 and four front electric wire chucks 22. The four rear electric wire chucks 21 are arranged side by side at equal intervals in the left-right direction. The four rear electric wire chucks 21 are provided so as to be movable in the left-right direction between a first position and a second position.

[0016] 2 and 3 , at the first position, the four rear electric wire chucks 21 face the electric wire supply unit 3, the imaging unit 4, the coating unit 5, and the UV irradiation unit 6 in the front-rear direction. At the second position, the rightmost rear electric wire chuck 21 faces the imaging unit 4 in the front-rear direction, the second rightmost rear electric wire chuck 21 faces the coating unit 5 in the front-rear direction, the second leftmost rear electric wire chuck 21 faces the UV irradiation unit 6 in the front-rear direction, and the leftmost rear electric wire chuck 21 is located to the left of the UV irradiation unit 6.

[0017] 3, the four front electric wire chucks 22 are arranged further forward in the front-rear direction than the four rear electric wire chucks 21 (on the side of the electric wire supply unit 3, the imaging unit 4, the coating unit 5, and the UV irradiation unit 6). The four front electric wire chucks 22 are arranged side by side at equal intervals in the left-right direction, and face the electric wire supply unit 3, the imaging unit 4, the coating unit 5, and the UV irradiation unit 6 in the front-rear direction. The four front electric wire chucks 22 do not move in the left-right direction.

[0018] Next, we will explain the configurations of the rear electric wire chuck 21 and the front electric wire chuck 22. The four rear electric wire chucks 21 have the same configuration. The rear electric wire chuck 21 has a cubic main body 23 and a pair of chucks 24, 24 that are attached to the main body 23 so as to be able to open and close freely and that clamp and hold the terminal-fitted electric wire 100 from the left and right directions.

[0019] The chuck portion 24 has an arm 24A attached to the main body 23 so that a first end thereof is rotatable about an axis along the front-rear direction, and chuck claws 24B attached to a second end of the arm 24A. When the second ends of the pair of arms 24A are rotated so that they protrude in the left-right direction from the main body 23, the pair of chuck claws 24B open, releasing the hold of the terminal-fitted electric wire 100. When the second ends of the pair of arms 24A are rotated so that they protrude upward from the main body 23, the pair of chuck claws 24B close, allowing the terminal-fitted electric wire 100 to be clamped and held from the left-right direction.

[0020] The front electric wire chuck 22 has a similar configuration to the rear electric wire chuck 21, and therefore a detailed description of the front electric wire chuck 22 will be omitted here. The main body 23 of the rear electric wire chuck 21 is attached to a slider (not shown) that moves in the left-right direction.

[0021] The conveying operation of the conveying unit 2 configured as described above will be described. The electric wire with terminals 100 is set (held in the correct position) in the rightmost rear electric wire chuck 21 and front electric wire chuck 22 by the electric wire supplying unit 3. Next, the front electric wire chuck 22 is opened, and the rear electric wire chuck 21 is moved from the first position to the second position. As a result, the electric wire with terminals 100 is conveyed to the imaging unit 4, and can be held by the front electric wire chuck 22, which is the second from the right and arranged opposite the imaging unit 4. Thereafter, the rear electric wire chuck 21 is opened and returned from the second position to the first position, and the electric wire with terminals 100 can be held by the rear electric wire chuck 21, which is the second from the right. By repeating this process, the electric wire with terminals 100 can be conveyed in order to the electric wire supplying unit 3, the imaging unit 4, the coating unit 5, and the UV irradiation unit 6.

[0022] The electric wire supply unit 3 has a work setting jig (not shown). When an operator inserts an end of the terminal-fitted electric wire 100 into the work setting jig and the end abuts against a positioning wall inside the work setting jig, the front electric wire chuck 22 closes. This allows the terminal 103 of the terminal-fitted electric wire 100 to be positioned in the front-rear direction.

[0023] The imaging unit 4 has a camera (not shown) and a ring-shaped illumination unit (not shown) arranged below the camera. The camera is attached facing downward. When the electric wire with terminal 100 is transported to the imaging unit 4 and held by the front electric wire chuck 22 facing the imaging unit 4 in the front-rear direction, the terminal 103 comes within the imaging range of the camera.

[0024] The applicator 5 includes a nozzle (not shown) that dispenses the coating agent 101 toward a target (terminal 103 of the terminal-attached electric wire 100), a tank (not shown) that stores the coating agent 101, and a piping (not shown) that connects the tank and nozzle. The liquid coating agent 101 stored in the tank is supplied to the nozzle via the piping and dispensed from the nozzle. The nozzle is movable left and right and front and rear by left and right cylinders (not shown) and front and rear cylinders (not shown). The terminal-attached electric wire 100 is transported to the applicator 5 and held by the front electric wire chuck 22 that faces the applicator 5 in the front and rear directions, and the terminal 103 enters the dispensing range of the nozzle. The applicator 5 may further include an ultraviolet light source (not shown) that temporarily irradiates ultraviolet light. If the coating material 101 cannot be transported to the UV irradiation unit 6 within a predetermined time after the coating material 101 is discharged onto the terminal-fitted electric wire 100, ultraviolet rays may be temporarily irradiated from an ultraviolet source to prevent the coating material 101 from dripping.

[0025] As shown in Fig. 5, the UV irradiation unit 6 has an irradiation unit 30 that irradiates ultraviolet rays 104 (see Fig. 4(c)) downward toward an irradiation target (terminals 103 of the terminal-fitted wire 100), and a reflection unit 40 that is disposed below the irradiation unit 30 and reflects the ultraviolet rays 104. A detailed configuration of the UV irradiation unit 6 will be described later. When the terminal-fitted wire 100 is transported to the UV irradiation unit 6 and held by the front wire chuck 22 that faces the UV irradiation unit 6 in the front-rear direction, the terminals 103 come within the irradiation range of the irradiation unit 30.

[0026] The control unit 7 is composed of a microcomputer that operates according to a program stored in the memory unit and controls the entire corrosion prevention treatment device 1. The control unit 7 transports the terminal-attached electric wire 100 through the electric wire supply unit 3, the imaging unit 4, the coating unit 5, and the UV irradiation unit 6 in this order, and sequentially sets the terminal-attached electric wire 100 (see FIG. 4(a)), applies the coating agent 101 (see FIG. 4(b)), and irradiates with ultraviolet light (see FIG. 4(c)). The coating agent 101, which is made of a UV-curable resin, is cured by irradiation with ultraviolet light. The control unit 7 measures the terminal position from an image of the terminal 103 captured by the imaging unit 4, determines the application position of the coating agent 101 based on the measured terminal position, and controls the movement of the nozzle of the applicator 5 to apply the coating agent 101 to the determined application position (i.e., the position that covers the exposed conductor core wire 102B). The display unit 8 sequentially displays the control status of the corrosion prevention treatment device 1 by the control unit 7 on a monitor or the like (not shown).

[0027] Next, the configuration of the UV irradiation unit 6 will be described in more detail with reference to FIGS. 5 to 9. As shown in FIG. 5, the irradiation unit 30 and the reflecting unit 40 located below the irradiation unit 30 that constitute the UV irradiation unit 6 are arranged to face each other with a gap in the vertical direction. The irradiation unit 30 is provided so as to be movable vertically between an original position (see FIGS. 5 to 7) and an irradiation position (see FIG. 8) below the original position by an upper and lower cylinder 31 (see FIG. 5). The reflecting unit 40 is provided so as to be movable vertically between an original position (see FIGS. 5 to 7) and an irradiation position (see FIG. 8) above the original position by an upper and lower cylinder 41 (see FIG. 5).

[0028] As shown in FIGS. 5 and 6, a substantially rectangular parallelepiped mirror mounting section 42 is disposed in the reflecting section 40. A downwardly recessed recess 43 (see FIG. 6) is formed on the upper surface of the mirror mounting section 42. The recess 43 is defined by a pair of left and right groove inner surfaces 44 parallel to the front-rear direction and a front groove inner surface 45 parallel to the left-right direction, with the rear side open. The pair of left and right groove inner surfaces (flat surfaces) 44 are each inclined upward (so as to form a V shape when viewed from the front-rear direction) (see also FIG. 9), and the front groove inner surface 45 is also inclined upward. A flat plate-shaped mirror 44a is detachably provided on each of the pair of left and right groove inner surfaces 44, and a flat plate-shaped mirror 45a is detachably provided on the front groove inner surface 45. Each of the mirrors 44a, 45a is capable of reflecting ultraviolet light 104.

[0029] 9, the UV irradiation unit 6 is further provided with a shielding plate 50 that blocks ultraviolet rays 104 leaking from a gap G (see FIG. 9) on the right side (i.e., on the coating unit 5 side) between the irradiation unit 30 and the reflection unit 40. This prevents the ultraviolet rays 104 leaking from the gap G from unintentionally hitting the terminals 103 (i.e., the terminals 103 from the previous process) of the terminal-attached electric wire 100 that is arranged opposite the coating unit 5 (see FIG. 1, etc.) in the front-to-rear direction. The configuration of the UV irradiation unit 6 has been described above.

[0030] As shown in FIGS. 5 to 7 , the terminals 103 of the terminal-attached electric wire 100 transported by the transport unit 2 to the UV irradiation unit 6 are positioned within the irradiation range of the irradiation unit 30, which is between the irradiation unit 30 in its original position and the reflector 40 in its original position. Next, as shown in FIG. 8 , the irradiation unit 30 is moved downward from its original position to the irradiation position by the upper and lower cylinders 31 so as to approach the terminals 103, and the reflector 40 is moved upward from its original position to the irradiation position by the upper and lower cylinders 41 so as to approach the terminals 103. As a result, as shown in FIG. 9 , the lower part of the irradiation unit 30 is positioned adjacent to the upper side of the terminals 103, and the terminals 103 are positioned within the grooves of the recesses 43 of the reflector 40. Here, because the rear side of the recesses 43 is open as described above, even when the terminals 103 are positioned within the grooves of the recesses 43, the electric wires 102 extending rearward from the terminals 103 do not interfere with the reflector 40 (more specifically, the mirror positioning unit 42). Next, ultraviolet light 104 is irradiated downward from the lower part of the irradiation unit 30 onto the upper surface of the terminal 103 (see FIG. 9). As a result, the liquid coating agent 101 applied to the terminal 103 is irradiated with ultraviolet light 104, and the coating agent 101 made of a UV-curable resin is cured.

[0031] Incidentally, when the liquid coating agent 101 is applied to the terminals 103, the liquid coating agent 101 may spread not only onto the top surfaces of the terminals 103 but also onto the side surfaces and back surfaces of the terminals 103. The UV irradiation unit 6 of the present embodiment not only irradiates the top surfaces of the terminals 103 with ultraviolet light 104, but also irradiates the entire coating agent 101 with ultraviolet light 104, thereby properly curing the entire coating agent 101.

[0032] Specifically, in the UV irradiation unit 6 according to the present embodiment, as shown in FIG. 9 , the ultraviolet light 104 emitted downward from the irradiation unit 30 is directed not only toward the upper surface of the terminal 103 but also toward the pair of left and right mirrors 44a and 45a of the reflector 40. The ultraviolet light 104 directed toward the upper surface of the terminal 103 directly strikes the upper surface of the terminal 103. The ultraviolet light 104 directed toward the pair of left and right mirrors 44a and the front mirror 45a of the reflector 40 is reflected by the pair of left and right mirrors 44a and the front mirror 45a and strikes the side and rear surfaces of the terminal 103. In this manner, the ultraviolet light 104 strikes the entire outer periphery of the terminal 103. As a result, even if the liquid coating agent 101 has spread to the side and rear surfaces of the terminal 103, the entire coating agent 101 applied to the terminal 103 can be properly cured.

[0033] The tilt angles of the pair of left and right mirrors 44a and the front mirror 45a are set so that the ultraviolet rays 104 uniformly hit the entire outer periphery of the terminal 103 (i.e., so that the entire coating agent 101 applied to the terminal 103 can be properly cured) in consideration of, for example, the shape and size of the terminal 103, the irradiation angle of the ultraviolet rays 104 from the irradiation unit 30, the distance between the terminal 103 and the irradiation unit 30, and the distance between the terminal 103 and the pair of left and right mirrors 44a and the front mirror 45a. Furthermore, although the mirrors 44a and 45a have a planar shape in this example, the mirrors 44a and 45a may have a quadratic curved surface shape in the cross section shown in FIG. 9 to improve the light-collecting performance on the terminal 103.

[0034] <Other aspects> It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and modifications, improvements, etc. are possible as appropriate. Furthermore, the material, shape, dimensions, number, location, etc. of each component in the above-described embodiments are arbitrary as long as they can achieve the present invention, and are not limited thereto.

[0035] Here, the features of the above-described embodiment of the irradiation device (UV irradiation section 6) according to the present invention will be briefly summarized and listed below in [1] to [3].

[0036] [1] An irradiation device (6) that irradiates an irradiation target (103) with a light beam (104), an irradiation unit (30) that irradiates the light beam (104) in a predetermined direction; a reflecting section (40) that is arranged to receive the light beam (104) emitted by the irradiating section (30) and that reflects the light beam (104), The reflecting portion (40) is The illumination lamp includes a recess (43) recessed in the direction so that the irradiation target (103) can be placed in the groove, and mirror surfaces (44a, 45a) provided on inner groove surfaces (44, 45) of the recess (43) to reflect the light beam (104). Irradiation device (6).

[0037] According to the irradiation device having the configuration [1] above, when an irradiation target (for example, the terminal portion of a terminal-attached electric wire) is placed in the groove of the recess of the reflecting part and light rays (for example, ultraviolet light) are irradiated from the irradiation part, the irradiated light rays not only hit the irradiation target directly but also hit the irradiation target after being reflected by the mirror part of the reflecting part. Therefore, the irradiation device having this configuration can irradiate the irradiation target with light rays from multiple directions.

[0038] [2] In the irradiation device (6) described in [1] above, The recess (43) is A cross section intersecting the direction has a V-shaped groove shape. Irradiation device (6).

[0039] According to the irradiation device having the configuration [2] above, the recessed portion has a V-shaped groove shape, which allows the light beam to be reflected by the mirror surface portion so as to be concentrated toward the irradiation target.

[0040] [3] The irradiation device (6) according to the above [1], The device further includes a shielding portion (50) that blocks the light beam (104) leaking from a gap (G) between the irradiating portion (30) and the reflecting portion (40). Irradiation device (6).

[0041] According to the irradiation device having the configuration [3] above, light rays leaking from the gap between the irradiation unit and the reflection unit are blocked by the blocking unit. This prevents the leaked light rays from unintentionally hitting the target to be irradiated when the target is located near the irradiation device. [Explanation of symbols]

[0042] 6 UV irradiation section (irradiation device) 30 Irradiation unit 40 Reflector 43 Recess 44 Groove inner surface 44a Mirror (mirror surface) 45 Groove inner surface 45a Mirror (mirror surface) 50 Shielding plate (shielding part) 103 Terminal (irradiation target) 104 Ultraviolet rays (light) G Gap

Claims

1. An irradiation device that irradiates an irradiation target with a light beam, an irradiation unit that irradiates the light beam in a predetermined direction; a reflecting section that is arranged to receive the light beam emitted by the irradiating section and that reflects the light beam, The reflecting portion is a recessed portion recessed in the direction so that the irradiation target can be placed in the groove; and a mirror surface portion provided on an inner surface of the groove of the recessed portion to reflect the light beam. Irradiation device.

2. 2. The irradiation device according to claim 1, The recessed portion is A cross section intersecting the direction has a V-shaped groove shape. Irradiation device.

3. 2. The irradiation device according to claim 1, Further provided is a shielding portion that blocks the light beam leaking from a gap between the irradiating portion and the reflecting portion. Irradiation device.

Images