JP6514984B2 - Lens unit manufacturing apparatus and lens unit manufacturing method - Google Patents

Description

  The present invention relates to an apparatus and a method for manufacturing a lens unit in which a lens having an O-ring attached thereto is attached to a holder.

  In the lens unit, the lens is mounted on a cylindrical holder called a so-called lens barrel. In order to manufacture such a lens unit, a manufacturing apparatus has been proposed in which the lens disposed on the pallet is held by a suction head and mounted on a holder (see Patent Document 1).

JP, 2015-57304, A

  In the lens unit, an O-ring may be provided between the lens and the holder for the purpose of preventing foreign matter such as dust or water from entering the holder. There is a problem that the manufacturing apparatus described in can not cope.

  In view of the above problems, it is an object of the present invention to provide a lens unit manufacturing apparatus and a lens unit manufacturing method capable of efficiently manufacturing a lens unit in which a lens is mounted via an O-ring. .

  In order to solve the above problems, the lens unit manufacturing apparatus according to the present invention intersects the lens arrangement portion in which the lens is arranged toward one side in the first direction, and the first direction with respect to the lens arrangement portion. An O-ring disposition portion provided at a position separated in a direction, the O-ring attached to the lens being disposed toward one side of the first direction, and the lens disposition portion and the O-ring disposition portion A holder placement portion provided at a position separated in a direction intersecting the first direction, and in which the holder on which the lens is mounted is disposed toward one side in the first direction, and on the other side in the first direction The lens holding mechanism for holding the lens toward the lens, the lens placement portion, the O-ring placement portion, and the holder placement portion are integrally moved relative to the lens holding mechanism in the direction intersecting the first direction. A lens delivery step in which the lens placement portion and the lens holding mechanism face each other in the first direction, and the lens holding mechanism receives the lens from the lens placement portion; and the O-ring placement portion and the lens holding mechanism An O-ring mounting step of mounting the O-ring to the lens held in the lens holding mechanism while facing the first direction, and the holder placement portion and the lens holding mechanism are faced in the first direction And a driving mechanism for performing a lens mounting step of mounting the lens on which the O-ring is mounted to the holder.

Further, in the lens unit manufacturing method according to the present invention, a lens arrangement portion in which the lens is arranged toward one side in the first direction, and a position separating from the lens arrangement portion in the direction intersecting with the first direction. An O-ring disposition portion provided on the lens, and an O-ring attached to the lens disposed toward one side in the first direction, and the first direction with respect to the lens disposition portion and the O-ring disposition portion A holder disposing portion provided at a position separated in the intersecting direction and in which the holder to which the lens is attached is disposed toward one side in the first direction, and the lens is disposed toward the other side in the first direction A lens holding mechanism for moving the lens disposing portion, the O-ring disposing portion, and the holder disposing portion integrally relative to the lens holding mechanism in a direction intersecting the first direction. , A lens delivery step in which the lens holding portion faces the lens holding portion in the first direction and the lens holding mechanism receives the lens from the lens positioning portion, the O-ring positioning portion, and the lens holding portion An O-ring mounting step of mounting the O-ring to the lens held in the lens holding mechanism while facing in the first direction, and the holder placement portion and the lens holding mechanism are faced in the first direction And a lens attaching step of attaching the lens to which the O-ring is attached to the holder.

  In the present invention, the lens arrangement portion, the O-ring arrangement portion and the holder arrangement portion are provided toward one side in the first direction, and the lens holding mechanism is provided toward the other side in the first direction. Therefore, by integrally moving the side of the lens arrangement portion, the O ring arrangement portion, and the holder arrangement portion in a direction intersecting the first direction with respect to the lens holding mechanism, between the lens holding mechanism and the lens arrangement portion The lens delivery step of the lens, the O-ring attaching step of attaching the O-ring to the lens held by the lens holding mechanism, and the lens attaching step of attaching the lens attached with the O-ring to the holder can be sequentially performed. Therefore, it is possible to efficiently manufacture the lens unit in which the lens is attached via the O-ring. In addition, since the O-ring mounting step and the lens mounting step are performed using a common lens holding mechanism, the configuration of the lens unit manufacturing apparatus can be simplified. Furthermore, the configuration of the drive system of the lens unit manufacturing apparatus is simplified since the sides of the lens arrangement portion, the O ring arrangement portion and the holder arrangement portion are integrally moved relative to the lens holding mechanism in the direction intersecting the first direction. can do.

  In the present invention, the lens placement portion, the O-ring placement portion, and the holder placement portion are provided linearly in order in a second direction intersecting the first direction, and the drive mechanism is the lens placement portion, The lens delivery step, the O-ring attachment step, and the lens attachment step are performed by integrally relatively moving the sides of the O-ring placement portion and the holder placement portion in the second direction with respect to the lens holding mechanism. It is preferable to carry out the process. According to this configuration, the lens placement unit, the O-ring placement unit, and the holder placement unit may be integrally moved relative to the lens holding mechanism in the second direction, so the configuration of the lens unit manufacturing apparatus is simplified. can do.

  In the present invention, the O-ring attached to the first holding portion provided in the O-ring arrangement portion is pressed to a position separated in the second direction with respect to the lens holding mechanism, thereby the first An O-ring pressing mechanism for moving the second holding portion provided in the O-ring arrangement portion with an outer diameter larger than the holding portion to expand the O-ring is disposed toward the other side in the first direction, The drive mechanism moves the sides of the lens arrangement portion, the O ring arrangement portion, and the holder arrangement portion in a linear manner integrally in the second direction with respect to the lens holding mechanism and the O ring pressing mechanism, Performing the lens delivery step, the O ring expansion step of expanding the diameter of the O ring by causing the O ring placement portion and the O ring pressing mechanism to face each other, the O ring attachment step, and the lens attachment step It is preferred. According to this configuration, when the O-ring is attached to the lens, the diameter of the O-ring can be efficiently expanded.

  In the present invention, the distance in the second direction between the lens holding mechanism and the O-ring pressing mechanism is equal to the distance in the second direction between the lens placement portion and the O-ring placement portion. It is preferable that the O-ring pressing mechanism and the O-ring placement portion face each other when the lens placement portion faces each other. According to this configuration, the lens delivery process and the O-ring diameter expansion process can be efficiently performed.

In the present invention, the O-ring attached to the first holding portion provided in the O-ring arrangement portion is pressed at a position separated from the lens holding mechanism in the direction intersecting the first direction. An O-ring pressing mechanism for moving the second holding portion provided in the O-ring arrangement portion with an outer diameter larger than the first holding portion to expand the O-ring toward the other side in the first direction The drive mechanism is integrally arranged on the side of the lens arrangement portion, the O-ring arrangement portion and the holder arrangement portion in a direction intersecting the first direction with respect to the lens holding mechanism and the O-ring pressing mechanism. Relatively moving to perform the lens delivery step, the O ring expanding step for opposing the O ring arrangement portion and the O ring pressing mechanism, the O ring mounting step, and the lens mounting step Masui. According to this configuration, when the O-ring is attached to the lens, the diameter of the O-ring can be efficiently expanded.

  In the present invention, the drive mechanism integrally moves the side of the lens arrangement portion, the O-ring arrangement portion, and the holder arrangement portion in a direction intersecting the first direction, and the lens holding mechanism It is preferable that an actuator is provided to move the lens holding mechanism to one side and the other side in the first direction. According to this configuration, the configuration of the drive system of the lens unit manufacturing apparatus can be simplified.

  In the present invention, the lens arrangement portion, the O-ring arrangement portion and the holder arrangement portion are provided toward one side in the first direction, and the lens holding mechanism is provided toward the other side in the first direction. Therefore, by integrally moving the side of the lens arrangement portion, the O ring arrangement portion, and the holder arrangement portion in a direction intersecting the first direction with respect to the lens holding mechanism, between the lens holding mechanism and the lens arrangement portion The lens delivery step of the lens, the O-ring attaching step of attaching the O-ring to the lens held by the lens holding mechanism, and the lens attaching step of attaching the lens attached with the O-ring to the holder can be sequentially performed. Therefore, it is possible to efficiently manufacture the lens unit in which the lens is attached via the O-ring. In addition, since the O-ring mounting step and the lens mounting step are performed using a common lens holding mechanism, the configuration of the lens unit manufacturing apparatus can be simplified. Furthermore, the configuration of the drive system of the lens unit manufacturing apparatus is simplified since the sides of the lens arrangement portion, the O ring arrangement portion and the holder arrangement portion are integrally moved relative to the lens holding mechanism in the direction intersecting the first direction. can do.

It is explanatory drawing which shows one form of the lens unit to which this invention is applied. It is the perspective view which saw the lens unit manufacturing apparatus to which this invention is applied from one side of a 1st direction. It is XZ sectional drawing of the principal part of the lens unit manufacturing apparatus to which this invention is applied. FIG. 6 is a perspective view of the lens holding mechanism and the O-ring pressing mechanism of the lens unit manufacturing apparatus to which the present invention is applied, viewed from the other side in the first direction. FIG. 5 is an XZ sectional view of a state in which the lens holding mechanism shown in FIG. 4 holds a lens. It is the disassembled perspective view which saw the lens arrangement | positioning part, O ring arrangement | positioning part, and holder arrangement | positioning part of the lens unit manufacturing apparatus to which this invention is applied from one side of a 1st direction. It is explanatory drawing of the O-ring arrangement | positioning part of the lens unit manufacturing apparatus to which this invention is applied. It is explanatory drawing which shows the O ring mounting method using the O ring mounting apparatus of the lens unit manufacturing apparatus to which this invention is applied. It is explanatory drawing which shows the lens mounting method using the lens mounting apparatus of the lens unit manufacturing apparatus to which this invention is applied.

A lens unit manufacturing apparatus for manufacturing a lens unit in which a first lens (workpiece) is mounted on a holder via an O-ring and a method for manufacturing the lens unit will be mainly described with reference to the drawings. Do. In the following description, three directions intersecting with each other will be described as an X direction, a Y direction, and a Z direction. Here, the Z direction corresponds to the first direction in the present invention, the X direction corresponds to the second direction in the present invention, and the Y direction corresponds to the third direction in the present invention. In the present embodiment, the Z direction (first direction) corresponds to the vertical direction, and the X direction (first direction) and the Y direction (third direction) correspond to the horizontal direction. In addition, Z1 is attached to one side (upper side) in the Z direction (first direction), Z2 is attached to the other side (lower side) in the Z direction (first direction), and X direction (second direction) In the description, X1 is attached to one side of the X direction, and X2 is attached to the other side in the X direction (second direction).

(Configuration of lens unit)
FIG. 1 is an explanatory view showing an embodiment of a lens unit to which the present invention is applied. The lens unit 1000 shown in FIG. 1 includes a lens 1 (first lens), a lens 2 (second lens), an aperture 4 and a lens 3 (third lens) along the optical axis L from the object side L1 to the image side L2. The lens 1 is disposed, and the lens 1, the lens 2, the diaphragm 4 and the lens 3 are mounted inside the cylindrical holder 5.

  The lens 1 disposed on the most object side L1 has an outer diameter larger than that of the lenses 2 and 3, and has a large diameter portion 1a on the object side L1 and a small diameter portion 1b projecting from the large diameter portion 1a to the image side L2. ing. Therefore, a stepped portion 1c facing the image side L2 is formed between the large diameter portion 1a and the small diameter portion 1b. A convex lens surface 101 is formed on the surface on the object side L1 of the large diameter portion 1a, and a concave lens surface 102 is formed on the surface on the image side L2 of the small diameter portion 1b. In the lens 1, a light-shielding coating film 7 called so-called black is continuously formed on the surface of the large-diameter portion 1a on the image side L2 and the surface of the small-diameter portion 1b on the image side L2. Is suppressed. The outer peripheral end of the lens surface 101 of the lens 1 is a chamfered portion 101a.

  The lens 2 has a convex lens surface 201 formed on the surface of the object side L1, and a concave lens surface 202 formed on the image side L2. The lens 3 has a convex lens surface 301 formed on the surface on the object side L1, and a convex lens surface 302 formed on the surface on the image side L2. The lens 2 and the lens 3 have the same outer diameter.

  Corresponding to this configuration, the holder 5 includes a cylindrical large diameter portion 5b for holding the lens 1 inward on the object side L1, and a cylindrical small diameter portion 5c protruding from the large diameter portion 5b to the image side L2. Have. Therefore, between the large diameter portion 5b and the small diameter portion 5c, a stepped portion 5d facing the object side L1 is formed. The large diameter portion 5b includes a first portion 5f in which the large diameter portion 1a of the lens 1 is positioned and a second portion 5g in which the small diameter portion 1b of the lens 1 is positioned. The inner diameter is smaller than the inner diameter of the first portion 5f. Therefore, a stepped portion 5h facing the object side L1 is formed between the first portion 5f and the second portion 5g, and the large diameter portion 1a of the lens 1 abuts on the stepped portion 5h from the object side L1. There is.

  The end of the image side L2 of the small diameter portion 5c has a convex portion 5e projecting radially inward, and inside the small diameter portion 5c, it is between the lens 1 and the convex portion 5e from the object side L1 to the image side The lens 2, the stop 4 and the lens 3 are arranged in order toward L2. Further, the end of the large-diameter portion 5b on the object side L1 holds the lens 1 by a method such as caulking. Linear portions 2d and 3d (D cut portions) are formed in a part of the lens 2 and the lens 3 in the circumferential direction, and between the lens 2 and the inner peripheral surface of the small diameter portion 5c in the linear portions 2d and 3d There is a gap between the lens 3 and the inner peripheral surface of the small diameter portion 5c.

The small diameter portion 1b of the lens 1 is a mounting portion 1e on which the O-ring 6 is mounted on the outer peripheral side, and the O-ring 6 is to be mounted in a direction orthogonal to the optical axis L direction (mounting direction of the lens 1). In a state of being elastically deformed between the outer peripheral surface of the mounting portion 1 e and the inner peripheral surface of the large diameter portion 5 b of the holder 5, the outer peripheral surface of the mounting portion 1 e is in contact with the inner peripheral surface of the large diameter portion 5 b of the holder 5 ing. In this state, the opening 5a of the object side L1 of the holder 5 is closed by the lens 1, and the entry of foreign matter such as dust and water from the object side L1 into the inside of the holder 5 is prevented by the lens 1 and the O ring 6. Be done.

(Whole configuration of lens unit manufacturing apparatus 100)
FIG. 2 is a perspective view of the lens unit manufacturing apparatus 100 to which the present invention is applied, as viewed from one side Z1 in the first direction Z. As shown in FIG. FIG. 3 is an XZ sectional view of the main part of a lens unit manufacturing apparatus 100 to which the present invention is applied.

  1, 2 and 3, the lens unit manufacturing apparatus 100 of this embodiment is an apparatus for mounting the lens 1 on the holder 5 after the O-ring 6 is mounted on the mounting portion 1 e of the lens 1. Therefore, the lens unit manufacturing apparatus 100 includes the lens placement unit 10, the O-ring placement unit 20 provided at a position separated from the lens placement unit 10 in the direction intersecting the first direction Z, and the lens placement unit 10. And a holder placement portion 30 provided at a position separated from the O-ring placement portion 20 in a direction intersecting the first direction Z. In the lens placement unit 10, the lens 1 is placed at one end Z1 of the first direction Z toward the one side Z1 in the first direction Z. In the O-ring placement unit 20, the one side Z1 in the first direction Z The O-ring 6 is disposed at one end of the first direction Z toward the one side Z1 in the first direction Z, and in the holder placement unit 30, the end of the one side Z1 in the first direction Z is directed to the one side Z1 in the first direction Z The holder 5 is disposed. In the present embodiment, the lens placement unit 10, the O-ring placement unit 20, and the holder placement unit 30 are linearly disposed in order from one side X1 to the other side X2 in the second direction X.

  The lens unit manufacturing apparatus 100 has a lens holding mechanism 40 for holding the lens 1 and an O ring pressing mechanism 50 provided at a position separated from the lens holding mechanism 40 in the direction intersecting the first direction Z. ing. The lens holding mechanism 40 has a suction head 41 for holding the lens 1 with the mounting portion 1e of the lens 1 facing the other side Z2 of the first direction Z at the end of the other side Z2 of the first direction Z There is. The O-ring pressing mechanism 50 has a pressing head 51 at the end of the other side Z2 in the first direction Z to press the O-ring 6 toward the other side Z2 in the first direction Z. The pressing head 51 presses the O-ring 6 mounted on the first holding portion 211 of the O-ring placement portion 20 against the other side Z2 in the first direction Z, as will be described later, and the outer diameter from the first holding portion 211 Is moved to the large second holding portion 221 to expand the diameter of the O-ring 6. In the present embodiment, the lens holding mechanism 40 and the O-ring pressing mechanism 50 are arranged in order from one side X1 to the other side X2 in the second direction X.

  The lens unit manufacturing apparatus 100 is integrally relative to the lens holding mechanism 40 and the O ring pressing mechanism 50 in the direction intersecting the first direction Z integrally with the lens arrangement portion 10, the O ring arrangement portion 20 and the holder arrangement portion 30. It has a drive mechanism 60 for moving. In this embodiment, the drive mechanism 60 integrally and linearly in the second direction X with the lens holding mechanism 40 and the O ring pressing mechanism 50 on the side of the lens arrangement portion 10, the O ring arrangement portion 20 and the holder arrangement portion 30. Move relative.

  More specifically, first, the lens unit manufacturing apparatus 100 extends from the base 71 to the one side Z1 in the first direction Z from the base 71 extending in the second direction X on the other side Z2 in the first direction Z And a fixing plate 73 fixed to an end on one side Z1 of the support 72 in the first direction Z. On the fixed plate 73, an actuator 48 for driving the suction head 41 of the lens holding mechanism 40 in the first direction Z and the other side Z2 in the first direction Z, and the pressing head 51 of the O ring pressing mechanism 50 in the first direction Z An actuator 58 for driving on the side Z1 and the other side Z2 is fixed. Therefore, the lens holding mechanism 40 and the O-ring pressing mechanism 50 can not move in the second direction X and the third direction Y.

The lens placement portion 10, the O-ring placement portion 20 and the holder placement portion 30 are mounted on a common support plate 64, and the support plate 64 is supported by a guide rail 66 on the base 71 via a slider 69. The drive mechanism 60 has a drive source 61 such as a motor, a rotary shaft 67 extending from the drive source 61, and a nut 68 constituting the rotary shaft 67 and a feed screw mechanism. The nut 68 is a support plate It is linked with 64. Therefore, the drive mechanism 60 moves the side of the O-ring placement unit 20 and the holder placement unit 30 integrally in the second direction X with respect to the lens holding mechanism 40 and the O-ring pressing mechanism 50.

  Here, the distance between the lens holding mechanism 40 and the O-ring pressing mechanism 50 in the second direction X is equal to the distance between the lens placement unit 10 and the O-ring placement unit 20 in the second direction X. More specifically, the distance between the suction head 41 of the lens holding mechanism 40 and the pressing head 51 of the O-ring pressing mechanism 50 in the second direction X, and the second direction X between the lens placement unit 10 and the O-ring placement unit 20 And the distance at

(Operation and effect of the entire lens unit manufacturing apparatus 100)
An operation (a method of manufacturing the lens unit 1000) in the entire lens unit manufacturing apparatus 100 will be described with reference to FIGS. 1, 2 and 3. FIG.

  In the lens unit manufacturing apparatus 100 of the present invention, the side of the lens placement unit 10, the O-ring placement unit 20, and the holder placement unit 30 is moved by the drive mechanism 60 in the first direction Z with respect to the lens holding mechanism 40 and the O-ring pressing mechanism 50. The lens transfer process, the O-ring diameter expansion process, the O-ring attachment process, and the lens installation process described below are performed by relative movement integrally in the second direction X intersecting with.

  More specifically, first, the lens 1 is disposed on the lens placement unit 10 with the mounting portion 1e directed to the other side Z2 in the first direction Z in the state shown in FIGS. In addition, the O-ring 6 is attached to the outer peripheral side of the first holding portion 211 of the O-ring placement portion 20. Further, the holder 5 with the lens 2, the diaphragm 4 and the lens 3 mounted inside is disposed in the holder placement portion 30 with the large diameter portion 5 b facing the one side Z 1 in the first direction Z.

  Next, in the lens delivery step and the O-ring diameter increasing step, the lens placement portion 10, the O-ring placement portion 20 and the holder placement portion 30 are moved in the second direction X by the drive mechanism 60 to move the lens placement portion 10 And the suction head 41 of the lens holding mechanism 40 are opposed in the first direction Z. As a result, the O-ring placement portion 20 and the pressing head 51 of the O-ring pressing mechanism 50 face each other in the first direction Z.

  Next, in the lens delivery step, the suction head 41 is driven toward the other side Z2 in the first direction Z by the actuator 48, and the lens 1 disposed in the lens placement unit 10 is suctioned by the suction head 41. Drives the suction head 41 toward the one side Z1 in the first direction Z.

  At the same time, in the O-ring expanding step, the actuator 58 drives the pressing head 51 toward the other side Z2 in the first direction Z by the actuator 58, and the O attached to the outer peripheral side of the first holding portion 211 of the O-ring placement portion 20 The ring 6 is pressed toward the other side Z2 of the first direction Z, and is moved to the outer peripheral side of the second holding portion 221 of the O-ring placement portion 20. As a result, the O-ring 6 expands in diameter.

Next, in the O-ring mounting step, the drive mechanism 60 moves the side of the lens placement unit 10, the O-ring placement unit 20 and the holder placement unit 30 to one side X1 of the second direction X, and the O-ring placement unit 20 And the suction head 41 of the lens holding mechanism 40 are opposed in the first direction Z. Next, the suction head 41 is driven by the actuator 48 toward the other side Z2 in the first direction Z, and the O-ring mounted on the outer peripheral side of the second holding portion 221 of the O-ring placement portion 20 of the lens placement portion 10 6 is moved to the one side Z1 in the first direction Z, and the O-ring 6 is moved to the outer peripheral side of the mounting portion 1e of the lens 1. Next, the suction head 41 is driven by the actuator 48 toward the one side Z1 in the first direction Z.

  Next, in the lens mounting step, the side of the lens placement unit 10, the O-ring placement unit 20, and the holder placement unit 30 is moved by the drive mechanism 60 to one side X1 of the second direction X, and the holder placement unit 30 and the lens The suction head 41 of the holding mechanism 40 is opposed in the first direction Z. Next, the suction head 41 is driven toward the other side Z2 in the first direction Z by the actuator 48, and the lens 1 is mounted inside the large diameter portion 5b of the holder 5. As a result, the lens 1 is mounted inside the holder 5 through the O-ring 6. Next, after releasing the lens 1 from the suction head 41, the suction head 41 is driven by the actuator 48 toward the one side Z1 in the first direction Z.

  Next, the holder 5 with the lens 1 attached via the O-ring 6 is recovered from the holder placement portion 30. Next, the lens 1 is placed again on the lens placement unit 10 with the mounting portion 1e directed to the other side Z2 in the first direction Z. In addition, the O-ring 6 is attached again to the outer peripheral side of the first holding portion 211 of the O-ring placement portion 20. Further, the holder 5 with the lens 2, the diaphragm 4 and the lens 3 mounted inside is placed again on the holder placement portion 30 with the large diameter portion 5 b facing the one side Z 1 in the first direction Z. Then, the above process is repeated to obtain the holder 5 in which the lens 1 is mounted via the O-ring 6.

  As described above, in this embodiment, the lens placement unit 10, the O-ring placement unit 20, and the holder placement unit 30 are provided toward the one side Z1 in the first direction Z, and the lens holding mechanism is provided toward the other side Z2 in the first direction Z. 40 and an O-ring pressing mechanism 50 are provided. Therefore, the sides of the lens placement unit 10, the O-ring placement unit 20 and the holder placement unit 30 may be integrally moved relative to the lens holding mechanism 40 and the O-ring pressing mechanism 50 in the direction intersecting the first direction Z. A lens delivery process, an O-ring diameter expansion process, an O-ring installation process, and a lens installation process can be performed in order. Therefore, the lens unit 1000 in which the lens 1 is mounted to the holder 5 via the O-ring 6 can be manufactured efficiently. In addition, since the O-ring mounting step and the lens mounting step are performed using the common lens holding mechanism 40, the configuration of the lens unit manufacturing apparatus 100 can be simplified. Furthermore, since the sides of the lens arrangement unit 10, the O-ring arrangement unit 20, and the holder arrangement unit 30 are integrally moved relatively, the configuration of the drive system of the lens unit manufacturing apparatus 100 can be simplified.

  In addition, since the lens arrangement unit 10, the O-ring arrangement unit 20, and the holder arrangement unit 30 are linearly provided in the second direction X in order, the drive mechanism 60 includes the lens arrangement unit 10, the O-ring arrangement unit 20, and the holder arrangement unit 30. The lens transfer step, the O-ring mounting step, and the lens mounting step can be performed by moving the relative position in the second direction X linearly and integrally. Therefore, the configuration of the lens unit manufacturing apparatus 100 can be simplified as compared to the case where the lens placement unit 10, the O-ring placement unit 20, and the holder placement unit 30 are independently moved in the second direction X.

  Further, since the O-ring pressing mechanism 50 is provided, the O-ring 6 can be easily expanded. Here, the distance between the lens holding mechanism 40 and the O-ring pressing mechanism 50 in the second direction X is equal to the distance between the lens placement unit 10 and the O-ring placement unit 20 in the second direction X. When the suction head 41 and the lens holding mechanism 40 face each other in the first direction Z, the O-ring placement portion 20 and the pressing head 51 of the O-ring pressing mechanism 50 automatically face each other in the first direction Z. Therefore, the lens delivery process and the O-ring diameter expansion process can be performed efficiently.

Further, in the present embodiment, since the drive mechanism 60 moves the side of the lens placement unit 10, the O-ring placement unit 20, and the holder placement unit 30 integrally, the lens holding mechanism 40 and the O-ring pressing mechanism 50 There is no need to move in the X direction. In addition, the lens holding mechanism 40 is provided with the actuator 48 for driving the suction head 41 in the first direction Z, and the O-ring pressing mechanism 50 is provided with the actuator 58 for driving the pressing head 51 in the first direction Z. It is not necessary to provide the actuator 58 in the first direction Z in the portion 10, the O-ring placement portion 20, and the holder placement portion 30. Therefore, the configuration of the drive system of the lens unit manufacturing apparatus 100 can be simplified.

(Detailed Configuration of Lens Holding Mechanism 40)
FIG. 4 is a perspective view of the lens holding mechanism 40 and the O-ring pressing mechanism 50 of the lens unit manufacturing apparatus 100 to which the present invention is applied, viewed from the other side Z2 in the first direction Z. FIG. 5 is an XZ cross-sectional view of a state where the lens holding mechanism 40 shown in FIG. 4 holds the lens 1.

  As shown in FIGS. 3 and 4, the lens holding mechanism 40 includes an actuator 48 fixed to the fixed plate 73, and a cylindrical suction head connected to the output shaft 481 of the actuator 48 via a cylindrical case 45. And 41. In the present embodiment, the actuator 48 is an air cylinder device, and drives the suction head 41 to the one side Z1 and the other side Z2 in the first direction Z. A pipe 49 connected to a vacuum suction device (not shown) is connected to the case 45 via a joint 491.

  Here, an end portion of the other side Z2 in the first direction Z of the suction head 41 is a contact portion 410 in contact with the lens 1. In the present embodiment, as shown in FIG. 5, at the end of the other side Z2 of the suction head 41 in the first direction Z, the inner surface is a tapered surface 411, and the tip of the tapered surface 411 is an abutment portion 410. It has become. Therefore, the width dimension of the contact portion 410 of the suction head 41 is narrower than the thickness (thickness) of the suction head 41. Therefore, in the suction head 41, the contact portion 410 contacts only the chamfered portion 101a at the outer peripheral end of the large diameter portion 1a of the lens 1 shown in FIG.

  In the lens holding mechanism 40 of the present embodiment, a cylindrical guide 42 is provided around the suction head 41. As shown in FIG. 4, an elongated hole-shaped opening 422 extending in the first direction Z is formed on the side surface of the guide 42, and the opening 422 is a shaft 421 for fixing the guide 42 to the suction head 41. Is penetrating. Therefore, when the actuator 48 drives the suction head 41 in the first direction Z, the guide 42 also moves in the first direction Z. Further, the guide 42 is moved by its own weight to the other side Z2 in the first direction Z with respect to the suction head 41 until the shaft 421 is positioned at the end of the one side Z1 in the first direction Z of the opening 422. In this state, the suction head 41 is retracted to one side Z1 in the first direction Z inside the guide 42, and the contact portion 410 of the suction head 41 is the other side Z2 in the first direction Z of the guide 42. Is located on one side Z1 of the first direction Z from the end of

  On the other hand, when the other member abuts on the end 420 of the other side Z2 in the first direction Z of the guide 42 from the other side Z2 of the first direction Z, as shown in FIG. The suction head 41 is moved to one side Z1 in the first direction Z, and the contact portion 410 of the suction head 41 is at substantially the same position as the end 420 of the guide 42 in the first direction Z.

(Detailed configuration of O-ring pressing mechanism 50)
As shown in FIGS. 3 and 4, the O-ring pressing mechanism 50 includes an actuator 58 fixed to the fixed plate 73, a cylindrical connecting member 53 connected to the output shaft 581 of the actuator 58, and the connecting member 53. And a pressing head 51 supported by the connecting member 53 by the inner adjustment screw 52. For this reason, the pressing head 51 can adjust the position in the first direction Z with respect to the connecting member 53 by means of the adjusting screw 52. In the present embodiment, the actuator 58
Is an air cylinder device, and drives the pressing head 51 to the one side Z1 and the other side Z2 in the first direction Z.

  In the pressing head 51, the end of the other side Z2 in the first direction Z includes a plurality of plate-like portions 515 aligned in the circumferential direction. Therefore, at the end of the pressing head 51, the plate-like portions 515 and the air gaps 516 are alternately formed in the circumferential direction. Further, a taper is formed on the radially outer side of the plate-like portion 515. Therefore, in the pressing head 51, the end of the other side Z2 in the first direction Z continuously reduces the outer diameter toward the other side Z2 in the first direction Z.

(Detailed Configuration of Lens Placement Unit 10)
FIG. 6 is an exploded perspective view of the lens placement unit 10, the O-ring placement unit 20, and the holder placement unit 30 of the lens unit manufacturing apparatus 100 to which the present invention is applied, viewed from one side Z1 in the first direction Z.

  As shown in FIG. 3 and FIG. 6, the lens placement portion 10 is a cylindrical fixing member 11 that opens toward the one side Z1 in the first direction Z, and a movable that is coaxially disposed inside the fixing member 11 A member 12 and a coil spring 13 disposed between the inner bottom of the fixed member 11 and the bottom of the movable member 12 are provided. The fixing member 11 is fixed to the support plate 64. The movable member 12 is elastically supported by the coil spring 13 on the fixed member 11 and is movable in the first direction Z inside the fixed member 11. The end of the movable member 12 at one end Z1 of the first direction Z is the receiving portion 120 of the lens 1, and the receiving portion 120 is shaped along the shape of the image side L2 of the lens 1. Therefore, the receiving unit 120 receives the lens 1 in a state where the surface of the object side L1 is directed to the one side Z1 in the first direction Z.

  In the lens placement unit 10 configured as described above, in the lens delivery step, suction is performed with the receiving unit 120 such that the central axis L10 of the lens placement unit 10 and the central axis L40 of the suction head 41 of the lens holding mechanism 40 are coaxial. The head 41 opposes. In this state, when the suction head 41 moves to the other side Z2 in the first direction Z, delivery of the lens 1 from the lens placement unit 10 to the suction head 41 is performed. At this time, the inner peripheral surface of the end of the other side Z2 of the guide 42 in the first direction Z is in contact with the outer peripheral edge of the lens 1, and the alignment between the suction head 41 and the lens 1 is performed.

(Configuration of O-ring placement unit 20)
FIG. 7 is an explanatory view of the O-ring placement portion 20 of the lens unit manufacturing apparatus 100 to which the present invention is applied, and FIGS. 7A, 7B, and 7C are XZ sectional views of the O-ring placement portion 20. A perspective view of pressing the O-ring 6 to the other side Z2 in the first direction Z by the O-ring pressing mechanism 50 as viewed from the one side Z1 in the first direction Z, and the other side Z2 in the first direction Z It is XZ sectional drawing which shows the mode after pressing to.

  As shown in FIGS. 4, 6 and 7, the O-ring placement portion 20 includes a first member 21 extending in the first direction, a second member 22 in which the first member 21 is disposed inside, and The second member 22 has a third member 23 disposed inside. The second member 22 and the third member 23 are bottomed cylindrical members coaxially arranged with the first member 21 and open toward the one side Z1 in the first direction Z. The third member 23 is fixed to the support plate 64. The first member 21 has an outer diameter slightly smaller than the inner diameter of the second member 22, and is movable in the first direction Z with the second member 22 as a guide. The second member 22 has an outer diameter slightly smaller than the inner diameter of the third member 23, and is movable in the first direction Z with the third member 23 as a guide. In the present embodiment, the second member 22 and the third member 23 are made of metal, and the first member 21 is made of resin.

An opening 237 extending in the first direction Z is formed on the side surface of the third member 23, and the pin 25 that is fixed to the bottom 229 of the second member 22 is located at the opening 237. For this reason,
The second member 22 is prevented from rotating around the axis L20 inside the third member 23, and the movable range of the second member 22 in the first direction Z is limited. Further, inside the third member 23, when the second member 22 retracts to the other side Z2 in the first direction Z, the second member 22 contacts the second member 22, and the other side of the second member 22 in the first direction Z A stopper 231 is formed to limit the movable range to Z2.

  Openings 226 and 236 extending in the first direction Z are formed in the side surface of the second member 22 and the side surface of the third member 23, and the opening 226 and 236 penetrate the first member 21. The pin 24 is located. Therefore, the first member 21 is prevented from rotating around the axis L20 inside the second member 22, and the movable range of the first member 21 in the first direction Z is limited.

  The end of the first member 21 in the first direction Z is a cylindrical first holding portion 211 holding the O-ring 6 on the outer peripheral side, and in the present embodiment, the outer diameter of the first holding portion 211 is The inner diameter of the O-ring 6 is smaller than or equal to the inner diameter of the O-ring 6 before being mounted on the mounting portion 1e of the lens 1. Therefore, the O-ring 6 can be easily mounted on the outer peripheral side of the first holding portion 211. As shown in FIG. 7B, the end of one side Z1 of the first member 21 in the first direction Z is formed with slits 215 into which the plate-like portion 525 of the pressing head 51 can enter at a plurality of locations in the circumferential direction. It is done.

  The end of the one side Z1 in the first direction Z of the second member 22 is a cylindrical second holding portion 221 which holds the O-ring 6 on the outer peripheral side. The outer diameter of the second holding portion 221 is larger than the inner diameter (the outer diameter of the mounted portion 1 e) of the O-ring 6 after the mounting of the second holding portion 221 to the mounted portion 1 e of the lens 1. Further, as shown in FIG. 7B, at the end portion of the second member 22 in the first direction Z, slits 225 into which the plate-like portion 525 of the pressing head 51 can enter are formed at a plurality of locations in the circumferential direction. There is. Further, an end of the one side Z1 of the third member 23 in the first direction Z is an extruded portion 230 whose inner diameter is smaller than the outer diameter of the O-ring 6 in the state of being held by the second holding portion 221.

  In the O-ring placement unit 20 configured in this manner, the first holding portion 211 of the first member 21 is the tip portion 220 of the second member 22 (first direction between the first member 21 and the second member 22 (first direction) A first spring 26 is disposed which applies an urging force to the first member 21 so as to project from the end of the one side Z1 of Z). In the present embodiment, the first spring 26 is a coil spring disposed between the bottom 219 of the first member 21 and the bottom 229 of the second member 22.

  Between the second member 22 and the third member 23, a second spring 27 is disposed which biases the second member 22 toward the side where the lens 1 is located (one side Z1 in the first direction Z). There is. In the present embodiment, the second spring 27 is a coil spring disposed between the bottom 229 of the second member 22 and the bottom 239 of the third member 23.

  When the first member 21 retracts to the side opposite to the lens 1 (the other side Z2 in the first direction Z) between the first member 21 and the second member 22, the second member 22 A third spring 28 is disposed to generate a biasing force for retracting to the opposite side (the other side Z2 in the first direction Z). In the present embodiment, an axis 29 extending in the first direction Z is supported by the bottom 229 of the second member 22 so as to be movable in the direction of the axis L20. A flange portion 291 is formed at an end of one side Z1 of the shaft 29 in the first direction Z, and the third spring 28 is a coil spring disposed between the flange portion 291 and the bottom portion 229 of the second member 22. It is. Therefore, the third spring 28 moves the second member 22 to the other side Z2 in the first direction Z when the first member 21 retracts to the other side Z2 in the first direction Z and abuts on the shaft 29. The second spring 27 is compressed.

In addition, since the large diameter portion 292 which is about to abut on the bottom portion 229 of the second member 22 from the other side Z2 in the first direction Z is formed on the shaft 29, the third spring 28 is via the flange portion 291. Even if the shaft 29 is biased to the one side Z1 in the first direction Z, the movement of the shaft 29 to the one side Z1 in the first direction Z is blocked. Therefore, since the first member 21 does not abut on the shaft 29 unless the first member 21 retracts to the other side Z2 in the first direction Z, the third spring 28 moves the first member 21 in the one direction Z in the first direction. There is no bias on side Z1.

Assuming that the spring pressure of the first spring 26 configured in this way is Pa, the spring pressure of the second spring 27 is Pb, and the spring pressure of the third spring 28 is Pc,
The spring pressure is Pa, Pb, Pc is the following conditional expression Pa <Pb <Pc
Pa + Pb <Pc
Meets neither.

(Function and effect of O-ring mounting device 100a)
FIG. 8 is an explanatory view showing an O-ring mounting method using the O-ring mounting device 100a of the lens unit manufacturing apparatus 100 to which the present invention is applied.

  In the lens unit manufacturing apparatus 100 according to this embodiment, the O-ring mounting device 100 a is configured by the O-ring placement unit 20, the O-ring pressing mechanism 50, and the lens holding mechanism 40. In order to mount the O-ring 6 on the mounting portion 1e of the lens 1 in the O-ring mounting device 100a, first, as shown in FIG. 7A, around the first holding portion 211 of the first member 21. Attach the O-ring 6 (first step).

  Next, in the O-ring expanding step (second step), the O-ring arranging portion is arranged such that the central axis L20 of the O-ring arranging portion 20 and the central axis L50 of the pressing head 51 of the O-ring pressing mechanism 50 are coaxial. 20 and the O-ring pressing mechanism 50 are opposed in the first direction Z. In this state, when the pressing head 51 moves to the other side Z2 in the first direction Z, as shown in FIGS. 7B and 7C, the plate-like portion 515 of the pressing head 51 is a slit 215 of the first member 21. And the slit 225 of the second member 22, the pressing head 51 presses the O-ring 6 toward the other side Z 2 in the first direction Z. As a result, the O-ring 6 moves from the first holding portion 211 of the first member 21 to the outer peripheral side of the second holding portion 221 of the second member 22. As a result, the O-ring 6 expands in diameter.

  Next, in the O-ring mounting step, as shown in FIG. 8A, O is set so that the central axis L20 of the O-ring placement portion 20 and the central axis L40 of the suction head 41 of the lens holding mechanism 40 are coaxial. After the ring placement portion 20 and the lens holding mechanism 40 are opposed in the first direction Z, the suction head 41 is moved to the other side Z2 in the first direction Z. As a result, as shown in FIG. 8B, the end of the mounting portion 1e of the lens 1 (the end of the other side Z2 in the first direction Z) is the end of the first member 21 (in the first direction Z). The end portion of the one side Z1 is pressed to the other side Z2 in the first direction Z. As a result, the first member 21 retracts inside the second member 22. At this time, the first spring 26 is compressed.

  Then, the bottom portion 219 of the first member 21 abuts on the shaft 29, and the shaft 29 is pressed against the other side Z2 in the first direction Z. As a result, the second member 22 is pressed by the third spring 28 and retreats to the other side Z2 in the first direction Z. At this time, the second spring 27 is compressed. Then, as shown in FIG. 8C, when the second member 22 retracts until it abuts against the stopper 231 of the third member 23, the tip of the third member 23 (the end of the one side Z1 in the first direction Z) ) Presses the O-ring 6 to the one side Z1 in the first direction Z, and the O-ring 6 is mounted on the outer peripheral side of the mounted portion 1e (third step).

Next, as shown in FIG. 8D, when the third spring 28 is compressed and the suction head 41 further moves to the other side Z2 in the first direction Z, the O-ring 6 is the tip of the second member 22. (The end of the one side Z1 in the first direction Z) is pressed to contact the step 1c on the side of the one side Z1 in the first direction Z (the root side of the mounting portion 1e). As a result, the O-ring 6 is mounted at a predetermined position of the mounting portion 1 e (fourth step). The movement of the suction head 41 in the first direction Z to the other side Z2 may be performed a plurality of times, and the O-ring 6 may be pressed a plurality of times on the other side Z2 in the first direction Z.

  After that, the suction head 41 moves to the one side Z1 in the first direction Z while holding the lens 1. As a result, the second member 22 returns to the position shown in FIG. 7A by the biasing force of the third spring 28. Further, the first member 21 returns to the position shown in FIG. 7A by the biasing force of the first spring 26.

  As described above, in the present embodiment, when the distal end of the mounting portion 1 e of the lens 1 presses the distal end of the first member 21 to retract the first member 21 and the second member 22 to the side opposite to the lens 1, The O-ring 6 is pressed by the tip of the third member 23 and moves from the second holding portion 221 of the second member 22 to the mounting portion 1 e of the lens 1. Here, since the outer diameter of the second holding portion 221 is larger than the outer diameter of the mounting portion 1 e, the O-ring 6 is moved from the first holding portion 211 of the first member 21 to the second holding portion 221 of the second member 22. When the diameter is increased by moving, even if twisting occurs, such twisting is mitigated when being attached to the mounting portion 1e. Further, after the O-ring 6 is attached to the attached portion 1e of the lens 1, the distal end of the first member 21 is further pressed by the attached portion of the lens 1 to further retract the first member 21, the second member The distal end portion 22 presses the O-ring 6 toward the root of the mounting portion 1e. For this reason, even if the O-ring 6 tries to be displaced toward the tip of the mounting portion 1e after the O-ring 6 is mounted to the mounting portion 1e of the lens 1, the O-ring 6 is mounted on the mounting portion 1e. It can be attached to a predetermined place. Further, since the above-described steps can be realized by relative movement of the O-ring 6 in the axial direction and relative movement of the lens 1 in the axial direction, the configuration of the drive mechanism and the like can be simplified.

  In the present embodiment, in particular, the outer diameter is the same or the outer diameter is reduced from the root side to the distal end side in the mounting portion 1e, so the O ring 6 is displaced toward the tip portion of the mounting portion 1e. Although it is easy to do, according to the present embodiment, such positional deviation of the O-ring 6 can be suppressed.

  Furthermore, in the present embodiment, the spring pressure Pa of the first spring 26, the spring pressure Pb of the second spring 27, and the spring pressure Pc of the third spring 28 satisfy the above conditions. Thus, pressing of the distal end of the first member 21 to the root of the mounting portion 1e with respect to the O-ring 6 can be performed automatically.

  Moreover, although the coating film 7 is provided in the part contact | abutted with the front-end | tip part of the 1st member 21 among the mounting | wearing parts 1e, since the 1st member 21 is resin, it is an end of the 1st member 21 Peeling or the like of the coating film 7 is unlikely to occur at the portion in contact with the portion.

  Further, in the present embodiment, since the O-ring pressing mechanism 50 is provided, the O-ring 6 is easily moved from the first holding portion 211 of the first member 21 to the second holding portion 221 of the second member 22, It can be diameter.

(Detailed configuration of the holder placement unit 30)
As shown in FIGS. 3 and 6, the holder placement portion 30 has one of the cylindrical fixing member 31 fixed to the support plate 64 and one of the fixing member 31 in the first direction Z so as to close the opening of the fixing member 31. And a holder holder 32 fixed to the end of the side Z1. A circumferential groove 232 is formed on the end face of the one side Z1 of the holder holder 32 in the first direction Z, and an annular seal member 33 is disposed in the circumferential groove 232. The holder holder 32 has a bottomed cylindrical shape, and the inner diameter of the hollow portion 321 of the holder holder 32 is slightly larger than the outer diameter of the small diameter portion 5 c of the holder 5. Therefore, when the holder 5 is disposed at the end of the one side Z1 of the holder holder 32 in the first direction Z, the surface of the image side L2 of the large diameter portion 5b abuts on the seal member 33, and the hollow of the holder holder 32 The part 321 is sealed.

  A tube 39 of a vacuum suction device (not shown) is connected to the hollow portion 321 of the holder holder 32 via a joint 391, and the vacuum suction device can vacuum suction the inside of the hollow portion 321.

(Function and effect of lens mounting device 100b)
FIG. 9 is an explanatory view showing a lens mounting method using the lens mounting device 100b of the lens unit manufacturing apparatus 100 to which the present invention is applied.

  In the lens unit manufacturing apparatus 100 of the present embodiment, the lens mounting device 100 b is configured by the holder placement unit 30 and the lens holding mechanism 40. In this lens mounting apparatus 100b, in order to mount the lens 1 mounted with the O-ring 6 on the holder 5, first, as shown in FIG. 8A, the holder 5 is mounted on the holder holder 32 of the holder placement portion 30. Do. At this time, the lens 2, the aperture 4 and the lens 3 are attached to the inside of the holder 5.

  Next, in the lens mounting step, the holder arranging portion 30 and the lens holding mechanism 40 are arranged in the first direction so that the central axis L30 of the holder arranging portion 30 and the central axis L40 of the suction head 41 of the lens holding mechanism 40 are coaxial. Let Z face each other. At that time, in the suction head 41, vacuum suction is performed as indicated by an arrow A1, and the lens 1 is vacuum suctioned. Further, as indicated by an arrow A2, the inside of the hollow portion 321 of the holder 32 is vacuum-suctioned by the vacuum suction device, and the inside of the holder 5 is vacuum-suctioned through the hollow portion 321.

  Next, as shown in FIG. 9B, the suction head 41 is moved to the other side Z2 in the first direction Z, and the lens 1 is mounted inside the large diameter portion 5b of the holder 5. At this time, the end 420 of the other side Z2 of the inner circumferential surface of the guide 42 in the first direction Z abuts on the end 5i of the large diameter portion 5b of the holder 5 in the first direction Z1. Here, the end 420 of the guide 42 is formed to follow the shape of the end 5 i of the holder 5. Therefore, the end 420 of the guide 42 and the end 5i of the holder 5 are positioned. Therefore, even when the central axis of the holder 5 is deviated from the central axis L30 of the holder placement portion 30 when the holder 5 is held by the hollow portion 321 of the holder holder 32, the suction with the central axis of the holder 5 occurs. It is adjusted to be coaxial with the central axis L40 of the head 41. Accordingly, alignment between the lens 1 and the holder 5 is performed.

  Then, while vacuum suction is performed on the inside of the holder 5 via the inside of the hollow portion 321 of the holder holder 32, the vacuum suction is stopped in the suction head 41, and the suction head 41 releases the lens 1. In addition, after the lens holding mechanism 40 releases the lens 1, the lens holding mechanism 40 performs the first suction head 41 while vacuum suctioning the inside of the holder 5 through the hollow portion 321 of the holder holding tool 32. The lens 1 is moved toward the inside of the holder 5 by moving the lens 1 to the other side Z 2 in the direction Z. The pressing of the lens 1 is performed a plurality of times.

  Thus, in the present embodiment, the cylindrical holder 5 is held by the lens holding mechanism 40 from the opposite side to the O-ring 6 to hold the lens 1 to which the O-ring 6 is attached, and to close the opening via the O-ring 6. When the lens 1 is attached, the inside of the holder 5 is vacuum suctioned, and after the lens holding mechanism 40 releases the lens 1, the inside of the holder 5 is vacuum suctioned. For this reason, even when the lens holding mechanism 40 can not reliably push the lens 1 into the holder 5, the lens 1 can be drawn into the holder 5 by the suction force at the time of vacuum suction of the inside of the holder 5. The lens 1 can be mounted at a predetermined position 5.

  When air is compressed in the space surrounded by the lens 1, the holder 5, and the O-ring 6 when the lens 1 is attached to the holder 5, the air pressure causes the holder 5 to compress the O-ring 6 and the lens 1. However, in this embodiment, since the inside of the holder 5 is vacuum-sucked, such positional deviation is unlikely to occur.

  Further, even after the suction head 41 releases the lens 1, the inside of the holder 5 is vacuum-sucked through the hollow portion 321 in the holder holder 32. In addition, after the lens holding mechanism 40 releases the lens 1, while the vacuum suction of the inside of the holder 5 is performed via the hollow portion 321 of the holder holding member 32, the movement in the first direction Z to the other side Z2 To press the lens 1 toward the inside of the holder 5. For this reason, the lens 1 can be attached to a predetermined position of the holder 5.

  The lens holding mechanism 40 has a cylindrical guide 42 movable in the axial direction around the suction head 41. The guide 42 sucks the suction head 41 and the lens when the suction head 41 vacuum-sucks the lens 1. When the lens 1 is mounted in the holder 5, the lens 1 and the holder 5 are positioned. For this reason, since the lens 1 can be held at an accurate position, the attachment of the O-ring 6 to the lens 1 and the attachment of the lens 1 to the holder 5 can be reliably performed.

  Further, since the holder holding tool 32 is provided with the annular seal member 33 that abuts on the holder 5, the inside of the holder 5 can be reliably vacuum-sucked through the holder holding tool 32.

Other Embodiments
In the above embodiment, the O-ring mounting device 100a mounts the O-ring 6 to the lens 1. However, the O-ring mounting device 100a of this embodiment is used when mounting the O-ring 6 to a work other than the lens 1 It is also good.

  In the above embodiment, in the lens mounting apparatus 100b, the lens 1 is mounted on the holder 5, but the configuration of the lens mounting apparatus 100b of this embodiment is adopted as a workpiece mounting apparatus for mounting a workpiece other than the lens 1 on the holder. It is also good.

  In the above embodiment, one side Z1 in the first direction Z is the upper side, and the other side Z2 in the first direction Z is the lower side. However, one side Z1 in the first direction Z is the lower side, the first direction Z The other side Z2 may be the upper side. In the above embodiment, the first direction Z is the vertical direction, but the first direction Z may be the horizontal direction.

  In the above embodiment, the lens arrangement unit 10, the O-ring arrangement unit 20, and the holder arrangement unit 30 are arranged linearly in the second direction X, but a layout not arranged linearly may be adopted. Further, in the above embodiment, the lens arranging unit 10, the O ring arranging unit 20, and the holder arranging unit 30 are moved. However, the lens holding mechanism 40 or the O ring pressing mechanism 50 may be moved. .

1 · · Lens, 1a · · · Large diameter portion of the lens, 1b · · · Small diameter portion of the lens, 1e · · · · · · · · · · · · · · · · 5a · · · 5a · · · · · · O ring 7 · · Coating film, 10 · · · lens arrangement portion, 20 · · O ring arrangement portion, 21 · · first member, 22 · · second member, 23 · · third member, 26 · · first spring, 27 · · · 2 spring 28 third spring 30 holder arrangement portion 32 holder holder 33 seal member 40 lens holding mechanism 41 suction head 42 guide 48 58 · · · Actuator, 50 · · O ring pressing mechanism, 51 · · Pressing head, 60 · · Drive mechanism, 100 · · Lens unit manufacturing device, 100a · · O ring mounting device, 100b · lens mounting device, 1000 · · · Lens unit 211 First holder 221 The second holding unit, X · · second direction, Z · · first direction, Z1 · · one side of the first direction, Z2 · · the other side in the first direction

Claims (12)

A lens arrangement portion in which a lens is arranged toward one side in the first direction;
An O-ring arranging portion provided at a position separated from the lens arranging portion in a direction intersecting the first direction, and an O-ring mounted on the lens being arranged toward one side in the first direction ,
The holder is provided at a position separated from the lens placement portion and the O-ring placement portion in a direction intersecting the first direction, and a holder on which the lens is mounted is disposed toward one side in the first direction. A holder placement unit,
A lens holding mechanism for holding the lens toward the other side of the first direction;
The lens placement portion and the lens holding mechanism are integrally moved relative to the lens holding mechanism in the direction intersecting the first direction with respect to the lens placement portion, the O ring placement portion, and the holder placement portion. A lens passing step in which the lens holding mechanism receives the lens from the lens arrangement portion, and the O ring arrangement portion and the lens holding mechanism are opposed in the first direction. An O-ring attaching step of attaching the O-ring to the lens held by the holding mechanism; and the lens on which the O-ring is attached with the holder disposition portion and the lens holding mechanism facing each other in the first direction A drive mechanism for performing a lens mounting process for mounting on the holder;
A lens unit manufacturing apparatus characterized by having. The lens placement portion, the O-ring placement portion, and the holder placement portion are provided linearly in order in a second direction intersecting the first direction,
The driving mechanism moves the side of the lens arrangement portion, the O-ring arrangement portion, and the holder arrangement portion integrally in a linear manner in the second direction with respect to the lens holding mechanism; The lens unit manufacturing apparatus according to claim 1, wherein the O-ring mounting step and the lens mounting step are performed. The O-ring attached to the first holding portion provided in the O-ring arrangement portion is pressed to a position separated in the second direction with respect to the lens holding mechanism, and is larger than the first holding portion. An O-ring pressing mechanism for moving the second holding portion provided in the O-ring arrangement portion with an outer diameter to expand the O-ring is disposed toward the other side in the first direction,
The drive mechanism moves the sides of the lens arrangement portion, the O-ring arrangement portion, and the holder arrangement portion integrally in a linear manner in the second direction with respect to the lens holding mechanism and the O-ring pressing mechanism. Performing the lens delivery step, the O ring expansion step of expanding the diameter of the O ring by causing the O ring placement portion and the O ring pressing mechanism to face each other, the O ring attachment step, and the lens attachment step. The lens unit manufacturing apparatus according to claim 2, wherein The distance in the second direction between the lens holding mechanism and the O ring pressing mechanism is equal to the distance in the second direction between the lens placement portion and the O ring placement portion,
4. The lens unit manufacturing apparatus according to claim 3, wherein the O-ring pressing mechanism and the O-ring disposing portion face each other when the lens holding mechanism and the lens disposing portion face each other. The O-ring attached to the first holding portion provided in the O-ring arrangement portion is pressed to a position separated from the lens holding mechanism in the direction intersecting with the first direction to press the first ring. An O-ring pressing mechanism for moving the second holding portion provided in the O-ring arrangement portion with an outer diameter larger than the holding portion to expand the O-ring is disposed toward the other side in the first direction,
The drive mechanism integrally moves the sides of the lens arrangement portion, the O ring arrangement portion, and the holder arrangement portion in a direction intersecting the first direction with respect to the lens holding mechanism and the O ring pressing mechanism. And the O-ring expanding portion, the O-ring mounting step, and the lens mounting step. The lens unit manufacturing apparatus according to claim 1, The drive mechanism integrally moves the side of the lens placement portion, the O-ring placement portion, and the holder placement portion in a direction intersecting the first direction.
The lens according to any one of claims 1 to 5, wherein the lens holding mechanism is provided with an actuator for moving the lens holding mechanism to one side and the other side in the first direction. Unit manufacturing device. A lens arrangement portion in which a lens is arranged toward one side in the first direction;
An O-ring arranging portion provided at a position separated from the lens arranging portion in a direction intersecting the first direction, and an O-ring mounted on the lens being arranged toward one side in the first direction ,
The holder is provided at a position separated from the lens placement portion and the O-ring placement portion in a direction intersecting the first direction, and a holder on which the lens is mounted is disposed toward one side in the first direction. A holder placement unit,
A lens holding mechanism for holding the lens toward the other side of the first direction;
Set up,
The sides of the lens placement portion, the O-ring placement portion and the holder placement portion are integrally moved relative to the lens holding mechanism in a direction intersecting the first direction,
A lens delivery step in which the lens placement unit and the lens holding mechanism are opposed in the first direction, and the lens holding mechanism receives the lens from the lens placement unit;
An O-ring mounting step of mounting the O-ring on the lens held by the lens holding mechanism with the O-ring placement portion and the lens holding mechanism facing each other in the first direction;
A lens mounting step of mounting the lens on which the O-ring is mounted on the holder with the holder placement portion and the lens holding mechanism facing each other in the first direction;
And manufacturing a lens unit. The lens placement portion, the O-ring placement portion, and the holder placement portion are provided linearly in order in a second direction intersecting the first direction,
The lens transfer step, the O-ring mounting step are performed by integrally moving the side of the lens placement portion, the O-ring placement portion, and the holder placement portion in the second direction integrally with the lens holding mechanism. And manufacturing the lens unit according to claim 7, wherein the lens mounting step is performed. The O-ring attached to the first holding portion provided in the O-ring arrangement portion is pressed to a position separated in the second direction with respect to the lens holding mechanism, and the outside larger than the first holding portion An O-ring pressing mechanism for moving the second holding portion provided in the O-ring arrangement portion by diameter to expand the O-ring is disposed toward the other side in the first direction,
The lens delivery step is performed by linearly and integrally moving the side of the lens placement portion, the O-ring placement portion, and the holder placement portion in the second direction with respect to the lens holding mechanism and the O-ring pressing mechanism. And an O-ring expanding step of expanding the diameter of the O-ring by opposing the O-ring arrangement portion and the O-ring pressing mechanism, the O-ring mounting step, and the lens mounting step. Item 9. A method of manufacturing a lens unit according to item 8. The distance in the second direction between the lens holding mechanism and the O ring pressing mechanism is equal to the distance in the second direction between the lens placement portion and the O ring placement portion,
10. The method of manufacturing a lens unit according to claim 9, wherein the O-ring pressing mechanism and the O-ring arrangement portion are opposed when the lens holding mechanism and the lens arrangement portion are opposed. The O-ring attached to the first holding portion provided in the O-ring arrangement portion is pressed to a position separated from the lens holding mechanism in the direction intersecting with the first direction to press the first ring. An O-ring pressing mechanism for moving the second holding portion provided in the O-ring arrangement portion with an outer diameter larger than the holding portion to expand the O-ring is disposed toward the other side in the first direction. ,
The lens delivery unit is moved relative to the lens holding mechanism and the O-ring pressing mechanism integrally in the direction intersecting the first direction integrally with the lens placement unit, the O-ring placement unit, and the holder placement unit. And an O-ring expanding step of expanding the diameter of the O-ring by causing the O-ring placement portion and the O-ring pressing mechanism to face each other, the O-ring attaching step, and the lens attaching step. The manufacturing method of the lens unit of Claim 7. Moving the sides of the lens placement portion, the O-ring placement portion, and the holder placement portion in a direction intersecting the first direction;
The method according to any one of claims 7 to 11, wherein the lens holding mechanism is moved to one side and the other side in the first direction by an actuator.

Images