JP6177921B2 - Nozzle changer - Google Patents

Description

  The present invention relates to a nozzle changer.

  2. Description of the Related Art Conventionally, there is known a nozzle changer configured to be detachable from an electronic component mounting apparatus that uses a plurality of types of suction nozzles to suck and mount electronic components on a circuit board and accommodates the plurality of types of suction nozzles. For example, the nozzle changer described in Patent Document 1 has a changer body in which a plurality of nozzle accommodation holes for individually accommodating a plurality of types of suction nozzles are formed, an open state in which the suction nozzles can be taken in and out of the nozzle accommodation holes, and a non-removable state. An open / close shutter that switches between a closed state and a spring that is supported by the changer body and biases the shutter so that the open / close shutter is closed. When this nozzle changer is attached to an electronic component mounting apparatus, a part of an open / close shutter is configured to engage with a tip of an air cylinder rod provided in the electronic component mounting apparatus. When the air cylinder is driven, the shutter is opened against the bias of the spring and the suction nozzle can be inserted into and removed from the nozzle housing hole. When the air cylinder stops driving, the shutter is closed by the bias of the spring. In this state, the suction nozzle cannot be put in and out of the nozzle housing hole.

JP-A-11-220294

  By the way, in such a nozzle changer, a suction nozzle corresponding to the type of electronic component mounted by the electronic component mounting apparatus is stored, and the type of electronic component varies depending on the circuit board to be mounted. The type of suction nozzle to be used will also be different. For this reason, when the type of circuit board to be mounted changes, an operator needs to replace the suction nozzle accommodated in the nozzle changer. Such a replacement operation of the suction nozzle can be performed with the nozzle changer attached to the electronic component mounting apparatus. However, during this period, the operation of the apparatus must be stopped, which is not preferable from the viewpoint of production efficiency. Therefore, a nozzle changer different from the nozzle changer attached to the electronic component mounting apparatus is prepared, and the other nozzle changer is required for the next circuit board to be mounted with the nozzle changer removed from the electronic component mounting apparatus. The suction nozzles are put in advance, and the necessary nozzles are replaced together with the nozzle changer at the timing when the circuit board is changed to the next mounting target.

  Thus, the work of replacing the suction nozzle with the nozzle changer removed from the electronic component mounting apparatus needs to be performed while the operator maintains the open state of the shutter. For this reason, the operator must replace the suction nozzle with the other hand while holding the openable shutter with one hand to maintain the open state, and the work efficiency is not good. In particular, in recent years, electronic components have been reduced in size, and the size of the suction nozzle has been reduced accordingly. Therefore, there have been cases where work efficiency is poor, for example, it is difficult to hold the suction nozzle with only one hand. Not only that, but maintaining the shutter in the open state also keeps the shutter pressed by the force of the hand against the bias of the spring, so the work burden has become large.

  The main purpose of the nozzle changer of the present invention is to efficiently replace the suction nozzle with respect to the nozzle changer removed from the electronic component mounting apparatus.

  The nozzle changer of the present invention employs the following means in order to achieve the above-mentioned main object.

The nozzle changer of the present invention is
A nozzle changer that is detachably attached to an electronic component mounting apparatus that adsorbs electronic components by a suction nozzle and mounts them on a circuit board,
A main body capable of accommodating the suction nozzle;
A shutter that is movably attached to the main body and moves between an open position that allows the suction nozzle to be taken in and out of the main body and a closed position that prevents the suction nozzle from being taken in and out of the main body. ,
A biasing means supported by the main body and biasing the shutter toward the closed position in the moving direction;
The nozzle changer is in contact with the shutter and the main body in the open position with the nozzle changer removed from the electronic component mounting apparatus, and the shutter is in the open position against the bias of the biasing means. An open state maintaining member to maintain;
It is a summary to provide.

  In the nozzle changer of the present invention, the open state maintaining member is in contact with the shutter and the main body in the open position in a state of being removed from the electronic component mounting apparatus, and biases the bias toward the closed position side in the moving direction. Since the shutter is kept in the open position against the bias of the means, the shutter can be kept open even if the operator does not press the shutter manually. For this reason, when performing the replacement | exchange operation | work of a suction nozzle in the state from which the nozzle changer was removed from the electronic component mounting apparatus, an operator can be concentrated on the replacement | exchange operation | work of a suction nozzle. In addition, since it is not necessary for the operator to keep pressing the shutter with his hand to maintain the open state, the work load can be reduced. As a result, it is possible to efficiently replace the suction nozzle with respect to the nozzle changer removed from the electronic component mounting apparatus.

  Further, in the nozzle changer of the present invention, the open state maintaining member is built in the main body, and when housed in the main body, does not contact the shutter, and partially protrudes from the main body, The protruding portion may be in contact with the shutter to maintain the open state of the shutter. By doing so, the open state maintaining member is a built-in main body type, and it is not necessary for the operator to prepare it as a separate member. Therefore, the suction nozzle replacement operation can be performed more efficiently.

  In this aspect of the nozzle changer of the present invention, the main body is formed with a through hole, the shutter is formed with a communication hole communicating with the through hole of the main body at an open position, and the open state maintaining member is the main body In the case where it is incorporated into the through hole of the shutter and partially protrudes from the through hole, the protruding portion is fitted into the communication hole of the shutter at the open position to maintain the open state of the shutter. You can also. In this way, the operator can fix the shutter in the open state by moving the shutter to the open position and then pushing the open state maintaining member incorporated in the through hole of the main body toward the shutter. The shutter can be kept open with a simple operation.

  In this aspect of the nozzle changer of the present invention, the main body has the through hole formed in accordance with the outer diameter of the open state maintaining member so that the open state maintaining member is fitted, and the open state maintaining member has one end It is a rod-shaped member formed so that the outer diameter of the lens is larger than the outer diameter of the other end, and can be fitted into the through hole so that the larger diameter side is the shutter side. If it carries out like this, it can prevent that an open state maintenance member falls out to the opposite side of a shutter from a through-hole. For this reason, when the open state maintaining member is of a built-in main body type, it is not necessary to separately provide a mechanism or member for preventing the open state maintaining member from falling off, and thus the number of parts can be reduced.

  Further, in the nozzle changer of the present invention, the main body is formed with a fitting portion to be fitted to the electronic component mounting apparatus, the fitting portion has a wall portion, and the urging means includes the shutter. The open state maintaining member is urged toward the wall portion of the fitting portion, and the open state maintaining member is detachably attached between the shutter in the open position and the wall portion of the fitting portion of the main body. The open state can also be maintained. If it carries out like this, an open state maintenance member can be attached and the open state of a shutter can be maintained, without giving a special process to the main body of a nozzle changer.

  Further, in the nozzle changer of the present invention, the main body has a mark formed on a surface on the side where the suction nozzle is inserted and removed, and the shutter is out of a range facing the mark at the closed position, and the mark is formed at the open position. The opening part located in the range which opposes shall also be formed. In this way, the operator can easily recognize whether or not the shutter is in the open position based on whether or not the mark can be visually recognized through the opening. For this reason, it is possible to prevent inconveniences such as attachment to the electronic component mounting apparatus while the shutter is kept open by the open state maintaining member.

It is a block diagram which shows the outline of a structure of the electronic component mounting apparatus 10 to which the nozzle changer 20 is attached. It is a block diagram which shows the outline of a structure of the nozzle changer 20 and the changer action | operation mechanism 22. FIG. 2 is a configuration diagram showing an outline of a configuration of a surface of a nozzle changer 20. FIG. 2 is a configuration diagram showing an outline of a configuration of a back surface of a nozzle changer 20. FIG. It is explanatory drawing which shows a mode that the nozzle changer 20 is made into an open state in the state from which the nozzle changer 20 is removed from the electronic component mounting apparatus 10. FIG. It is a block diagram which shows the outline of a structure of the open state maintenance member 150 of a modification. It is explanatory drawing which shows a mode that the nozzle changer 120 is made into an open state by the open state maintenance member 150 of the modification. It is explanatory drawing which shows a mode that the open state maintenance member 150 of the modification was attached to the back surface of the nozzle changer 120. FIG.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing an outline of the configuration of an electronic component mounting apparatus 10 to which a nozzle changer 20 according to an embodiment of the present invention is attached. FIG. 2 is an outline of the configuration of a nozzle changer 20 and a changer operating mechanism 22. FIG.

  The electronic component mounting apparatus 10 is configured as an apparatus for mounting the electronic component P on the circuit board S. As shown in FIG. 1, the component supply unit 12 for supplying the electronic component P and the board for transporting the circuit board S are provided. A transport unit 14, a component mounting unit 16 that sucks electronic components P by a suction nozzle 15 and mounts them on a circuit board S, and a controller 18 that is configured as a microprocessor centered on a CPU and controls the entire apparatus. The component mounting unit 16 includes a mounting head 17 in which the suction nozzle 15 is replaceably attached and is movable in the XY directions. The mounting head 17 moves the suction nozzle 15 in the Z-axis direction and the Z-axis. Rotation around is possible. As shown in FIG. 2, the suction nozzle 15 has an air passage formed therein and is attached to the mounting head 17 on the base end side (upper side in the figure) and sucks the electronic component P on the front end side (lower side in the figure). A cylindrical nozzle body 15a and a disk-shaped flange portion 15b projecting radially from the nozzle body 15a are configured. The nozzle body 15a is not limited to a cylindrical shape, and may be formed in a truncated cone shape with a proximal end tapering in a tapered shape, or may be formed with a distal end side having a larger outer diameter than the proximal end side. . The electronic component mounting apparatus 10 can use a plurality of types of suction nozzles 15 having different sizes and shapes on the tip side of the nozzle body 15a according to the types (sizes and shapes) of the electronic components P.

  As shown in FIGS. 1 and 2, the electronic component mounting apparatus 10 includes a nozzle changer (nozzle stocker) 20 that can be stocked with a plurality of types of suction nozzles 15 and is detachable from the electronic component mounting apparatus 10. The nozzle changer 20 includes a changer operating mechanism 22 (see FIG. 2) that operates the nozzle changer 20 so as to switch between a state in which the suction nozzle 15 can be inserted and removed and a state in which the suction nozzle 15 cannot be inserted and removed.

  As shown in FIGS. 1 and 2, the nozzle changer 20 has a rectangular parallelepiped changer body 30 provided with a plurality of nozzle receiving holes 31 (12 in FIG. 1), and the front-rear direction in FIG. The shutter 40 is attached so as to be movable in the left-right direction in FIG. 2 and a spring 48 that biases the shutter 40 rearward in FIG. 1 (right side in FIG. 2). The nozzle housing hole 31 of the changer body 30 is formed by countersink processing so as to support the flange portion 15b of the suction nozzle 15. The shutter 40 is configured to cover the front surface of the changer body 30 (the surface on which the nozzle housing hole 31 is formed) and to go around the back surface. Further, the shutter 40 is formed with a nozzle extraction hole 41 that allows the suction nozzle 15 to be taken out (in / out) from the nozzle accommodation hole 31 at a position on each nozzle accommodation hole 31 of the changer body 30. In FIG. 2, for the convenience of illustration, the nozzle accommodation hole 31 and the nozzle extraction hole 41 are illustrated one by one. The nozzle extraction hole 41 has a circular large-diameter hole 41a having a slightly larger diameter than the nozzle accommodation hole 31 and a width smaller than the diameter of the nozzle accommodation hole 31 (smaller than the outer diameter of the flange portion 15b of the suction nozzle 15). And a long hole-like small-diameter hole 41b extending along the moving direction of the shutter 40 from the large-diameter hole 41a. Further, a plurality (four in FIG. 1) of cylindrical pins 32 protrude from corners of the upper surface of the changer body 30, and the pins 32 are engaged with the shutter 40 so as to be slidable in the moving direction of the shutter 40. A long hole 42 is formed. For this reason, the shutter 40 can move with respect to the changer body 30 within the range of the length of the long hole 42 in the longitudinal direction. One end of the spring 48 is fixed to a spring mounting portion 35 provided on the lower surface of the changer body 30, and the other end is locked to a spring locking portion 47 provided on the shutter 40.

  As shown in FIG. 2, the changer operating mechanism 22 includes a base 23 in which a positioning recess 23 a of the nozzle changer 20 (changer body 30) is formed, an air cylinder 24 provided on the base 23, A tip member 25 attached to the tip of the rod 24a and a solenoid valve 26 that switches supply of air to the air cylinder 24 by a control signal from the controller 18 are provided. The air cylinder 24 is switched between a non-driving state and a driving state by supplying air from the electromagnetic valve 26, the rod 24a is pushed out in the non-driving state, and the rod 24a is pulled in the driving state. When the nozzle changer 20 is attached to the electronic component mounting apparatus 10, the nozzle changer 20 is placed on the base 23 with the air cylinder 24 in a non-driven state. At this time, the protrusion 36 protruding from the back surface of the changer body 30 is fitted into the recess 23a of the base 23 to position the nozzle changer 20 (changer body 30), and the tip attached to the air cylinder 24 (rod 24a). The member 25 is engaged with a notch-shaped engaging portion 46 provided in the shutter 40 (FIG. 2A).

  When the air cylinder 24 of the changer operating mechanism 22 is in a non-driven state, as shown in FIG. 2A, the position where the large-diameter hole 41a of the nozzle extraction hole 41 is displaced from the nozzle accommodation hole 31 (the small-diameter hole 41b is Therefore, the suction nozzle 15 cannot be taken out from the nozzle housing hole 31. Of course, the suction nozzle 15 cannot be inserted into the nozzle housing hole 31. As described above, when the shutter 40 is in the position of FIG. 2A, the suction nozzle 15 cannot be put into and taken out of the nozzle housing hole 31, and this position is referred to as a closed position of the shutter 40. On the other hand, when the air cylinder 24 of the changer operating mechanism 22 is in a driving state, as shown in FIG. 2 (b), the rod 24a is pulled, so that the shutter 40 is closed against the bias of the spring 48. 2 moves to the left in FIG. 2 and stops. Although not shown in FIG. 2, the shutter 40 stops at a position where the long hole 42 contacts the pin 32. At this time, since the large-diameter hole 41 a of the nozzle extraction hole 41 is positioned so as to overlap the nozzle accommodation hole 31, the suction nozzle 15 can be extracted from the nozzle accommodation hole 31. Of course, the suction nozzle 15 can be inserted into the nozzle housing hole 31. As described above, when the shutter 40 is in the position of FIG. 2B, the suction nozzle 15 can be taken in and out of the nozzle housing hole 31, and this position is referred to as an open position of the shutter 40. As described above, when the nozzle changer 20 is attached to the electronic component mounting apparatus 10, the open position and the closed position of the shutter 40 can be switched by the shutter operation mechanism 22. For this reason, the mounting head 17 to which the suction nozzle 15 is attached is moved to a position on the nozzle changer 20 (nozzle accommodation hole 31), and the suction attached to the mounting head 17 with the opening and closing of the shutter 40 by the shutter operating mechanism 22. The nozzle 15 can be replaced with a required nozzle.

  Here, the configuration of the nozzle changer 20 of the present embodiment will be further described. FIG. 3 shows the front surface of the nozzle changer 20 (upper surface attached to the electronic component mounting apparatus 10), and FIG. 4 shows the back surface of the nozzle changer 20. FIG. 3A shows a case where the shutter 40 is in the closed position, and FIG. 3B shows a case where the shutter 40 is in the open position.

  As shown in FIGS. 3 and 4, the changer body 30 has a through hole 33 (shown by a dotted line) penetrating to the back surface in the lower left of the front surface of FIG. 3 in addition to the nozzle receiving hole 31 and the pin 32 described above. A rectangular mark 34 (shown by a dotted line) is formed on the lower right side of FIG. The through hole 33 is formed in a tapered shape in which the hole diameter gradually increases from the back surface side to the front surface side of the changer body 30. Further, the shutter 40 has a through hole 43 having a slightly larger diameter than the hole diameter on the surface side of the through hole 33 at a position corresponding to the through hole 33 of the changer body 30 in addition to the nozzle extraction hole 41 and the long hole 42 described above. And an opening 44 having a rectangular opening slightly larger than the mark 34 is formed at a position corresponding to the mark 34 of the changer body 30. As shown in FIG. 3A, when the shutter 40 is in the closed position, the through hole 43 of the shutter 40 is shifted from the through hole 33 of the changer body 30 and the opening 44 is away from the formation region of the mark 34. It will be out of position. As shown in FIG. 3B, when the shutter 40 is in the open position, the through hole 43 of the shutter 40 just overlaps the through hole 33 of the changer body 30 (the through holes 33 and 43 are in complete communication). Position) and the opening 44 is positioned on the mark 34 formation region. When the shutter 40 is in the closed position, the through-hole 43 of the shutter 40 is not limited to the position where the through-hole 43 of the shutter 40 is shifted from the through-hole 33 of the changer body 30, that is, the part of the through-hole 43 of the shutter 40 overlaps. It does not matter even if it becomes a position that does not overlap with the through hole 33 of the changer body 30 at all.

  A rod-shaped member is incorporated in the through hole 33 of the changer body 30. This rod-shaped member is for maintaining the open state in which the shutter 40 is in the open position, and is referred to as an open state maintaining member 50. This open state maintaining member 50 has a tapered shape in which the outer diameter at one end is gradually larger than the outer diameter at the other end, and the overall length is longer than the thickness of the changer body 30; and the tapered member 50a. Is inserted into the through-hole 33 of the changer main body 30 and the flange member 50b is attached to the lower end surface of the taper member 50a with a bolt or the like (not shown). The taper member 50a and the flange member 50b can be made of metal, or can be made of rubber or resin. Moreover, you may attach the flange member 50b to the lower end surface of the taper member 50a by adhesion | attachment. As described above, the through-hole 33 of the changer body 30 is formed so that the hole diameter gradually increases from the back surface side to the front surface side, and the hole diameter is the open state maintaining member 50 (taper member 50a). When the large diameter side is the surface side of the changer body 30, the open state maintaining member 50 (taper member 50 a) is formed so as to be fitted. For this reason, when the open state maintaining member 50 is accommodated in the through-hole 33 in such a direction that the large diameter side of the open state maintaining member 50 (taper member 50a) is the surface side of the changer body 30, the open state maintaining member 50 is changed to the changer. It does not fall off from the back side of the main body 30. The outer diameter of the flange member 50b attached to the lower end surface of the taper member 50a is larger than the hole diameter on the back surface side of the through hole 33 of the changer body 30. For this reason, the open state maintaining member 50 to which the flange member 50b is attached does not fall off from the surface side of the changer body 30. As described above, the nozzle changer 20 of the present embodiment incorporates the open state maintaining member 50.

  A case will be described in which the operator manually replaces the suction nozzle 15 with the nozzle changer 20 thus configured removed from the electronic component mounting apparatus 10. FIG. 5 is an explanatory diagram illustrating a state in which the nozzle changer 20 is opened while the nozzle changer 20 is removed from the electronic component mounting apparatus 10. Here, when the nozzle changer 20 is removed from the electronic component mounting apparatus 10, the shutter 40 cannot be opened and closed by the changer operating mechanism 22. Therefore, the operator first manually moves the shutter 40 from the state where the shutter 40 is in the closed position (FIG. 5A) to the open position against the bias of the spring 48 (FIG. 5B). )). When the shutter 40 is moved to the open position, the through hole 33 of the changer body 30 and the through hole 43 of the shutter 40 just overlap. Next, the operator pushes the open state maintaining member 50 toward the front surface side (shutter 40 side) of the changer body 30 until the flange member 50b of the open state maintaining member 50 contacts the back surface of the changer body 30. The maintenance member 50 is protruded from the changer body 30 and is fitted into the through hole 43 of the shutter 40 (FIG. 5C). In a state in which the open state maintaining member 50 is fitted in the through holes 33 and 43, the inner peripheral surface of the through holes 33 and 43 and the outer peripheral surface of the open state maintaining member 50 are maintained even if the operator releases the hand from the shutter 40. Since the shutter 40 cannot move due to the contact, the shutter 40 stops at the open position against the bias of the spring 48 (FIG. 5D).

  In this way, the open state maintaining member 50 can maintain the open state in which the shutter 40 is in the open position, so that the operator resists the bias of the spring 48 when replacing the suction nozzle 15. There is no need to keep pressing with your hand. For this reason, the work burden in the replacement work of the suction nozzle 15 can be reduced. In addition, since the operator can perform the replacement work of the suction nozzle 15 using both hands, workability can be improved. In particular, in recent years, the size of the suction nozzle 15 has been reduced with the reduction in the size of the electronic component P, so that the merit of using both hands is significant. For these reasons, the operator can efficiently replace the suction nozzle 15 with respect to the nozzle changer 20 that has been detached from the electronic component mounting apparatus 10. Here, as shown in FIG. 3B, when the shutter 40 is in the open position, the mark 34 can be visually recognized from the opening 44. For this reason, it is possible to prevent the nozzle changer 20 from being attached to the electronic component mounting apparatus 10 while the shutter 40 is kept open by the open state maintaining member 50. Thus, when the nozzle changer 20 is attached to the electronic component mounting apparatus 10, the tip member 25 of the air cylinder 24 of the shutter operating mechanism 22 is not engaged with the engaging portion 46 of the shutter 40, and thus the shutter 40 is opened. It is possible to prevent inconvenience such as collision. Even if the open state maintaining member 50 is incorporated into the changer body 30, the open state maintaining member 50 is housed in the through-hole 33 and does not fall off from the back surface of the changer body 30. The open state maintaining member 50 does not interfere with the shutter 40 during opening and closing.

  Here, the correspondence between the components of the present embodiment and the components of the present invention will be clarified. The nozzle changer 20 of this embodiment corresponds to the nozzle changer of the present invention, the changer main body 30 corresponds to the main body, the shutter 40 corresponds to the shutter, the spring 48 corresponds to the biasing means, and the open state maintaining member 50 It corresponds to an open state maintaining member. Further, the through hole 33 of the changer body 30 corresponds to a through hole, and the through hole 43 of the shutter 40 corresponds to a communication hole. Further, the mark 34 of the changer body 30 corresponds to the mark, and the opening 44 of the shutter 40 corresponds to the opening.

  According to the nozzle changer 20 of the present embodiment described above, the open state maintaining member 50 is fitted into the through hole 33 of the changer body 30 and the through hole 43 of the shutter 40 with the shutter 40 moved to the open position. Since the open state of the shutter 40 can be maintained against the bias of the spring 48, the suction nozzle 15 can be efficiently replaced with the nozzle changer 20 removed from the electronic component mounting apparatus 10. Can do. For this reason, during operation of the electronic component mounting apparatus 10, it is efficient to put the suction nozzle 15 necessary for the next circuit board S to be mounted in advance in a nozzle changer 20 different from that used. If necessary, the necessary suction nozzle 15 can be replaced with the nozzle changer 20 at the timing of changing to the next circuit board S. From the above, the time required for replacing the suction nozzle 15 can be shortened, and the operating rate of the electronic component mounting apparatus 10 can be improved.

  Further, since the open state maintaining member 50 is built in the nozzle changer 20, it is not necessary for the operator to prepare the open state maintaining member 50 separately. Furthermore, the operator can fix the shutter 40 in the open state by moving the shutter 40 to the open position and pushing the open state maintaining member 50 incorporated in the through hole 33 to the shutter 40 side. The open state of the shutter 40 can be maintained with a simple operation. Since the open state maintaining member 50 and the through-hole 33 are formed in a tapered shape, it is not necessary to separately provide a mechanism or member for preventing the open state maintaining member 50 from falling out of the through hole 33, and the number of parts can be reduced. Can be reduced. Further, since the mark 34 is formed on the changer body 30 and the opening 44 is formed on the shutter 40 so as to face the mark 34 at the open position, it can be easily recognized whether or not the shutter 40 is in the open position. The open state maintaining member 50 can prevent the shutter 40 from being attached to the electronic component mounting apparatus 10 while being in the open state.

   It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.

  For example, in the above-described embodiment, the open state maintaining member 50 is incorporated into the through hole 33, but is not limited to the through hole, and may be incorporated into a hole that does not penetrate (a hole with a bottom). In this case, for example, the open state maintaining member 50 is provided with a protrusion for pulling out toward the shutter 40 on the upper surface (end surface on the large diameter side), and the protrusion is pinched from the through-hole 43 of the shutter 40 to open the state. The maintenance member 50 may be pulled out and the open state maintenance member 50 may be fitted into the through hole 43.

  In the above-described embodiment, the open state maintaining member 50 and the through hole 33 are formed in a tapered shape whose diameter gradually changes. However, the present invention is not limited to this. For example, the open state maintaining member 50 may be formed in a stepped shape having a large diameter portion and a small diameter portion, and the through hole 33 may be formed in a counterbore shape having a large diameter hole and a small diameter hole.

  Moreover, in embodiment mentioned above, although the open state maintenance member 50 and the through-hole 33 were formed in the taper shape, it prevented that the open state maintenance member 50 fell out, but it is not restricted to this, The open state maintenance member 50 and The through-hole 33 may be formed in a straight shape, and a mechanism for preventing dropout may be provided separately. For example, a slide type lid that can open and close the through hole 33 may be provided on the lower surface of the changer body 30. Alternatively, a communication hole that communicates in the radial direction is formed in the through hole 33 and a pin that is biased to protrude into the through hole 33 is provided in the communication hole, and the open state is accommodated in the through hole 33. The maintenance member 50 may be prevented from falling off by contacting the pin.

  In the above-described embodiment, the total length of the open state maintaining member 50 is longer than the thickness of the changer body 30, but is not limited thereto, and is formed to have substantially the same length as the thickness of the changer body 30. Alternatively, the length may be shorter than the thickness of the changer body 30.

  In the above-described embodiment, the open state maintaining member 50 has the flange member 50b attached to the lower end surface of the taper member 50a. However, the present invention is not limited to this, and the taper member is provided on the outer peripheral surface near the lower end of the taper member 50a. You may attach the pin etc. which are orthogonal to the axial direction of 50a. Even if it does in this way, it can prevent that the open state maintenance member 50 falls out from the surface side of the changer main body 30. FIG. Alternatively, the open state maintaining member 50 may be configured by only the taper member 50a, assuming that no member (for example, the flange portion 50b) for preventing the open state maintaining member 50 from falling off from the surface side of the changer body 30 is attached. Good.

  In the above-described embodiment, the mark 34 is formed on the changer body 30. However, the present invention is not limited to this, and the formation of the mark may be omitted. In this case, the formation of the opening 44 of the shutter 40 may be omitted.

  In the above-described embodiment, only one open state maintaining member 50 is used. However, the number is not limited to this, and a plurality of open state maintaining members 50 may be used. In this case, a plurality of through holes 33 in the changer body 30 and a plurality of through holes 43 in the shutter 40 may be provided.

  In the above-described embodiment, the open state maintaining member 50 is incorporated in the nozzle changer 20 (incorporated in the through hole 33). However, the present invention is not limited to this, and the open state maintaining member is connected to the nozzle changer 20. It may be configured to be detachable. The configuration of the open state maintaining member 150 of this modified example is shown in FIG. 6, and the state in which the shutter 40 of the nozzle changer 120 is opened by the open state maintaining member 150 of the modified example is shown in FIG. A state in which the maintenance member 150 is attached to the back surface of the nozzle changer 120 is shown in FIG. The modified nozzle changer 120 has the same configuration as the nozzle changer 20 except that the formation of the through hole 33 of the changer body 30 is omitted and the formation of the through hole 43 of the shutter 40 is omitted. The same reference numbers as the nozzle changer 20 are attached to the elements.

  As shown in FIG. 6, the modified open state maintaining member 150 includes a pair of flat plate members 152 and a pair of springs 154 attached to the planes of the pair of flat plate members 152 facing each other. The biasing force of the pair of springs 154 is greater than the biasing force of the spring 48 that acts on the shutter 40 when the shutter 40 is in the open position. Further, as shown in FIG. 7, a wall on the shutter 40 side in the convex portion 36 of the changer body 30 is a wall portion 36 a, and a wall on the convex portion 36 side in the engaging portion 46 of the shutter 40 is a wall portion 46 a. For this reason, the spring 48 urges the shutter 40 toward the wall portion 36 a of the convex portion 36.

  Then, the wall portion 36a of the convex portion 36 of the changer body 30 and the wall portion 46a of the engaging portion 46 of the shutter 40 in a state where the operator manually moves the shutter 40 to the open position (FIG. 7A). The open state maintaining member 150 is attached so as to be fitted between them (FIGS. 7B and 7C). At this time, the pair of flat plate members 152 is pressed toward each other so that the pair of springs 154 contract, and the open state maintaining member 150 is placed between the wall portion 36 a of the convex portion 36 and the wall portion 46 a of the engaging portion 46. The open state maintaining member 150 may be fitted while making it easy to fit. If the hand is released after the open state maintaining member 150 is fitted, the pair of flat plate members 152 try to return to their original positions by the bias of the spring 154, so that the back surfaces of the pair of flat plate members 152 are the walls of the projections 36. The open state maintaining member 150 can be attached to the nozzle changer 120 in contact with the portion 36 a and the wall portion 46 a of the engaging portion 46. In this way, the open state maintaining member 150 changes to a state where it can be easily fitted between the wall portion 36a of the convex portion 36 and the wall portion 46a of the engagement portion 46. The burden at the time of attaching the state maintenance member 150 can be reduced. When the open state maintaining member 150 is thus attached to the nozzle changer 120, the open state of the shutter 40 can be maintained as shown in FIG. 7C and FIG. Thereby, the open state maintenance member 150 can be attached and the open state of the shutter 40 can be maintained, without performing a special process to the nozzle changer 120 (changer main body 30 and shutter 40). For this reason, also in the modified example, the replacement operation of the suction nozzle 15 can be efficiently performed in a state where the nozzle changer 120 is detached from the electronic component mounting apparatus 10 as in the above-described embodiment. In addition, the convex part 36 of the changer main body 30 of this modification is equivalent to the fitting part of this invention, and the wall part 36a of the convex part 36 is equivalent to the wall part of a fitting part.

  In this modification, the changer main body 30 is formed with a convex portion 36 as a fitting portion and the concave portion 23a into which the convex portion 36 is fitted is formed in the base 23. However, the present invention is not limited to this. It is good also as what forms the convex part in which the concave part as a fitting part is formed in the base 23, and the concave part is fitted together. Even in this case, the open state maintaining member may be attached between the wall portion of the concave portion as the fitting portion and the wall portion 46a of the engaging portion 46 of the shutter 40.

  In this modified example, the convex portion 36 as a fitting portion to be fitted to the electronic component mounting apparatus 10 is formed on the back surface of the changer main body 30. It may be formed on the side surface. Even in this case, the open state maintaining member may be attached between the fitting portion formed on the side surface and the side surface portion of the shutter 40 that goes from the front surface of the changer body 30 to the back surface.

  It can be used in the manufacturing industry of electronic component mounting apparatuses.

  DESCRIPTION OF SYMBOLS 10 Electronic component mounting apparatus, 12 Component supply unit, 14 Substrate conveyance unit, 15 Adsorption nozzle, 15a Nozzle body, 15b Flange part, 16 Component mounting unit, 17 Mounting head, 18 Controller, 20, 120 Nozzle changer, 22 Changer operating mechanism , 23 base, 23a recess, 24 air cylinder, 24a rod, 25 tip member, 26 solenoid valve, 30 changer body, 31 nozzle receiving hole, 32 pin, 33 through hole, 34 mark, 35 spring support, 36 protrusion, 36a wall part, 40 shutter, 41 nozzle holding hole, 41a large diameter hole, 41b small diameter hole, 42 long hole, 43 through hole, 44 opening part, 46 engaging part, 46a wall part, 47 locking part, 48 spring, 50,150 Open state maintaining member, 50a Te Super member, 50b flange member, 152 flat plate member, 154 spring, P electronic component, S circuit board.

Claims (6)

A nozzle changer that is detachably attached to an electronic component mounting apparatus that adsorbs electronic components by a suction nozzle and mounts them on a circuit board,
A main body capable of accommodating the suction nozzle;
A shutter that is movably attached to the main body and moves between an open position that allows the suction nozzle to be taken in and out of the main body and a closed position that prevents the suction nozzle from being taken in and out of the main body. ,
A biasing means supported by the main body and biasing the shutter toward the closed position in the moving direction;
The nozzle changer is in contact with the shutter and the main body in the open position with the nozzle changer removed from the electronic component mounting apparatus, and the shutter is in the open position against the bias of the biasing means. An open state maintaining member to maintain;
Nozzle changer with The nozzle changer according to claim 1,
The open state maintaining member is built in the main body, and does not abut against the shutter when housed in the main body, and when the protrusion is partially projected from the main body, the projecting portion contacts the shutter. A nozzle changer that contacts and maintains the shutter open. The nozzle changer according to claim 2,
The body is formed with a through hole,
The shutter is formed with a communication hole communicating with the through hole of the main body at an open position,
The open state maintaining member is incorporated in the through hole of the main body, and when partially protruding from the through hole, the protruding portion is fitted into the communication hole of the shutter in the open position to A nozzle changer that keeps it open. The nozzle changer according to claim 3,
The through hole is formed in the main body according to the outer diameter of the open state maintaining member so that the open state maintaining member is fitted,
The open state maintaining member is a rod-shaped member formed so that an outer diameter at one end is larger than an outer diameter at the other end, and is fitted into the through-hole so that a larger diameter side becomes the shutter side. The nozzle changer according to claim 1,
The main body is formed with a fitting portion to be fitted to the electronic component mounting apparatus,
The fitting portion has a wall portion,
The urging means urges the shutter toward the wall portion of the fitting portion,
The open state maintaining member is detachably attached between the shutter in the open position and the wall portion of the fitting portion of the main body, and maintains the open state of the shutter. The nozzle changer according to any one of claims 1 to 5,
The main body has a mark formed on a surface on the side where the suction nozzle is inserted and removed,
The shutter is out of a range facing the mark at a closed position, and an opening is formed in a range facing the mark at an open position.

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