JP2005289102A - Carrying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To downsize a treatment tank, and to decrease treatment liquid, by shortening the length of the treatment tank and shallowing the depth of the treatment tank. <P>SOLUTION: The carrying device comprises: a fixed side rail 3 and a moving side rail 4 provided so as to transfer a carrier 2 fixing a carried article W, and guiding the carrier 2 so as to travel; a traveling drive device 6 traveling the carrier 2 along the rails 3 4; a cage 5 ascended/descended by an ascending/descending device 7 and rotated by a rotating device 8, and supporting the moving side rail 4; a carrier lock device 9 fixing the carrier 2 and the cage 5; and the treatment tank 12 storing the treatment liquid 11 for electrolytic coating. The carrier 2 transferred to the moving side rail 4 is fixed to the cage 5 by the carrier lock device 9. The carried article W is put in/take out from the treatment tank 12 while rotating action by the rotation device 8 and descending and ascending action by the ascending/descending device 7 are simultaneously carried out. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a transport apparatus that transports the object to be transported to a processing tank for performing the process in order to perform a process such as an electrolytic coating process or a pretreatment thereof on the object to be transported (processed object).

  For example, as a transport device for transporting a transported object to a treatment tank for performing the above-described treatment, which is used for an electrolytic coating process of a car body in an automobile production factory or a pretreatment thereof, a rotating shaft, a transported object fixed to the rotating shaft ( An automobile body), a skid that is fixed, a rotation driving device that rotates the rotating shaft, and a conveyor chain conveyor. The object to be conveyed is moved from the tank into the processing tank by the rotation driving device. Between the first tank and the tank to be rotated about 360 ° (see, for example, Patent Document 1) By passing it, it is rotated by a rotational drive motor to be in a vertically suspended state, and the object to be conveyed is lowered by a drop lifter at the second position and processed in the processing tank in a vertically suspended state. After being immersed in the liquid, transferred to the free rail, and rotated by 180 ° by the rotary drive motor in the processing tank while being transferred by the transfer chain (from the second position to the third position), at the third position. There is one that is lifted by a drop lifter in a vertically suspended state and is discharged to the overhead conveyor (for example, see Patent Document 2).

Japanese Patent Laying-Open No. 2003-306778 (FIG. 2-4) Japanese Patent Laid-Open No. 10-8292 (FIGS. 1-2 and 6)

  The conventional transfer apparatus as described above includes, for example, a descending inclined portion and an ascending inclined portion on an overhead conveyor, and a processing tank storing a processing liquid in a descending and ascending / descending portion of the object to be conveyed at the inclined portion, Compared with what is immersed in the processing liquid in the processing tank while transporting the transported object using the overhead conveyor, the length of the processing tank in the transport direction can be shortened, and the air of the transported object This has the effect of eliminating the accumulation (for example, when the object to be transported is an automobile body), the accumulation of air in the roof portion of the automobile or the like can be eliminated.

  However, there is a limitation in shortening the length in the transport direction of the processing tank and the depth of the processing tank needs to be increased due to the rotation of the object to be transported in the processing tank. There is a problem that a large processing tank is required and a large amount of processing liquid is required.

  The present invention has been made to solve the above-described problems, and can further reduce the length of the processing tank in the transport direction and reduce the depth of the processing tank. Therefore, an object of the present invention is to obtain a transfer device that can shorten the overall length of the production line, reduce the size of the treatment tank, and reduce the amount of treatment liquid.

  In order to solve the above problems, the transport device according to the present invention is provided so as to be able to deliver a carrier for mounting and fixing the object to be transported. A traveling drive device that causes the carrier to travel along the rail, and a cage that supports the movable rail that is moved up and down by a lifting device and rotated around a horizontal axis that is orthogonal to the conveying direction of the object to be conveyed by a rotating device. A carrier locking device capable of fixing and releasing the carrier and the cage or the movable rail, and a treatment liquid for performing an electrolytic coating process or a pretreatment on the object to be conveyed. A carrier that is driven by the travel driving device and is transferred from the fixed rail to the movable rail to the carrier lock device. The fixed object is fixed to the cage or the movable rail, and the object to be conveyed is placed in the processing tank while simultaneously performing the rotation operation by the rotation device and the lowering operation by the lifting device, and the rotation device The object to be transported is taken out of the processing tank while simultaneously performing a rotating operation and a lifting operation by the lifting device.

  Here, the transported object in a substantially horizontal state, which is mounted and fixed on the carrier fixed to the cage or the movable rail by the carrier lock device, passes from the substantially horizontal state to the substantially vertical state, and further, It is preferable that the object to be transported is placed in the processing tank while simultaneously performing the rotation operation by the rotation device that rotates from the substantially horizontal state to the inverted substantially horizontal state and the lowering operation by the elevating device.

  In addition, the object to be conveyed in a substantially horizontal state, which is placed and fixed on the carrier fixed to the cage or the movable rail by the carrier lock device, is changed to a substantially vertical state by the rotation device, and the It is preferable that the object to be transported is put into the processing tank while simultaneously performing the rotation operation by the rotation device from the substantially horizontal state to the substantially horizontal state reversed and the lowering operation by the lifting device.

  Furthermore, it is preferable to provide a connection device that eliminates a positional shift between the fixed side rail and the movable side rail when the carrier is transferred between the fixed side rail and the movable side rail.

  According to the transport device according to the present invention, the fixed side rail and the movable side rail that are provided so as to be able to deliver and carry the carrier for placing and fixing the object to be transported, and that guide the carrier so as to travel, and the carrier to the rail. A traveling drive device that travels along, a cage that supports the movable-side rail that moves up and down by a lifting device and rotates around a horizontal axis that is orthogonal to the transport direction of the object to be transported, and the carrier A carrier lock device capable of fixing and releasing the cage or the movable-side rail; and a treatment tank for storing a treatment liquid for performing a treatment such as an electrolytic coating treatment or a pretreatment on the object to be conveyed; And the carrier driven by the travel drive device and delivered from the fixed rail to the movable rail by the carrier lock device. It is fixed to a movable rail, and the object to be conveyed is placed in the processing tank while simultaneously performing the rotation operation by the rotation device and the lowering operation by the lifting device, and the rotation operation by the rotation device. Since the object to be transported is discharged from the processing tank while simultaneously performing the ascending operation by the lifting device, it is possible to reduce resistance when the transported object enters and leaves the processing liquid. In addition, it is possible to eliminate the accumulation of air in the conveyed object. In addition, since the liquid drainage of the transported object can be improved, it is possible to suppress a decrease in the processing liquid due to the transported object being taken out when the tank is taken out. Furthermore, since the descending operation or the ascending operation and the rotating operation are performed simultaneously, the conveyance time can be shortened and the productivity can be improved. In addition, since the length of the processing tank in the transport direction can be further shortened and the depth of the processing tank can be further reduced, the overall length of the production line can be shortened, the processing tank can be downsized, and the processing liquid can be used. Can be reduced in quantity.

  Moreover, according to the conveying apparatus which concerns on this invention, the said to-be-conveyed object of the substantially horizontal state formed by mounting on the said carrier fixed to the said cage or the movable-side rail with the said carrier lock apparatus is set to this substantially horizontal state. From the substantially horizontal state to the substantially horizontal state reversed from the substantially horizontal state, while simultaneously performing the pivoting operation by the pivoting device and the lowering operation by the lifting device. Since the tank enters the processing tank, the posture of the transferred object when entering the processing tank and when leaving the processing tank is intermediate between a substantially vertical state and a substantially horizontal state. It is possible to reduce the resistance when an object enters and leaves the treatment liquid. Moreover, since the said to-be-conveyed object will be in the reverse state in the immersion state of the said to-be-conveyed object to the said process liquid, the air pocket of the said to-be-conveyed object can be eliminated. Furthermore, since the liquid drainage of the transported object can be improved, it is possible to suppress a decrease in the processing liquid due to the transported object being taken out when the tank is taken out. Furthermore, since the descending operation or the ascending operation and the rotating operation are performed simultaneously, the conveyance time can be shortened and the productivity can be improved. In addition, since the length of the processing tank in the transport direction can be further shortened and the depth of the processing tank can be further reduced, the overall length of the production line can be shortened, the processing tank can be downsized, and the processing liquid can be used. Can be reduced in quantity.

  Furthermore, according to the transport device according to the present invention, the substantially horizontally transported object that is placed and fixed on the carrier fixed to the cage or the movable rail by the carrier lock device is moved by the rotating device. The processing is performed on the object to be conveyed while simultaneously performing a rotation operation by the rotation device and a lowering operation by the lifting device from the vertical state to the substantially horizontal state reversed from the substantially horizontal state to the substantially horizontal state. Since the tank is placed in the tank, the posture of the transported object when entering the processing tank and when leaving the processing tank is intermediate between a substantially vertical state and a substantially horizontal state. The resistance at the time of entering and leaving the treatment liquid can be reduced. Moreover, since the said to-be-conveyed object will be in the reverse state in the immersion state of the said to-be-conveyed object to the said process liquid, the air pocket of the said to-be-conveyed object can be eliminated. Furthermore, since the liquid drainage of the transported object can be improved, it is possible to suppress a decrease in the processing liquid due to the transported object being taken out when the tank is taken out. Furthermore, since the descending operation or the ascending operation and the rotating operation are performed simultaneously, the conveyance time can be shortened and the productivity can be improved. In addition, since the length of the processing tank in the transport direction can be further shortened and the depth of the processing tank can be further reduced, the overall length of the production line can be shortened, the processing tank can be downsized, and the processing liquid can be used. Can be reduced in quantity.

  Furthermore, according to the transport apparatus according to the present invention, the transport apparatus includes a connection device that eliminates a positional deviation between the fixed side rail and the movable side rail when the carrier is transferred between the fixed side rail and the movable side rail. Therefore, the positional deviation between the fixed side rail and the movable side rail can be eliminated, and the carrier can be prevented from dropping from the rail, and the carrier between the fixed side rail and the movable side rail can be prevented. The reliability of delivery can be improved.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments shown in the accompanying drawings, and all the embodiments that satisfy the requirements described in the claims are described. Is included. In addition, in this specification, the conveyance direction (forward travel side) which conveys a to-be-conveyed object (to-be-processed object) to the process tank which performs processes, such as an electrolytic coating process or its pre-processing, is forward (refer to arrow A direction in the figure). ), The opposite side is the rear, and the left and right are left and right from the front to the rear.

  1 to 3 are a schematic right side view, a schematic plan view, and a schematic front view (viewed from the front) showing a transport device according to an embodiment of the present invention. In the figure, a transport apparatus 1 includes a carrier 2 for placing and fixing a transported object W, fixed-side rails 3 and 3 for guiding the carrier 2 so that the carrier 2 can travel, and a movable-side rail 4 for guiding the carrier 2 so that it can travel. 4, a cage 5 that supports 4, a self-propelled trolley 6 that is a traveling drive device that causes the carrier 2 to travel along the rails 3, 3, 4, and 4, a lifting device 7 that lifts and lowers the cage 5, and the cage 5. Is a carrier that can fix and release the rotation device 8 that rotates the carrier 2 and the cage 5 around a horizontal axis that is orthogonal to the conveyance direction of the article W to be conveyed (see arrow A in FIG. 1). Connecting device 10 that eliminates the positional deviation between the fixed rails 3 and 3 and the movable rails 4 and 4 when the carrier 2 is transferred between the locking device 9 and the fixed rails 3 and 3 and the movable rails 4 and 4. ..And electrolytic coating treatment or before The process of management, etc. and a process tank 12 which is formed by storing the treating liquid 11 for applying the carried object W. The carrier lock device 9 may be configured to fix and release the carrier 2 and the movable rails 4 and 4.

  The carrier 2 includes front and rear frames 13, 14, 15 and 16, a transported object support member 17 erected on these frames, a traveling roller 18 disposed on the lower side of the frame. , And a center frame 20 which is provided between the left and right frames 15 and 16 and has a fixing vertical piece 20a projecting downward at the center thereof. The carrier 2 is engaged with the running roller 18 by engaging the fixed side rails 3 and 3 or the movable side rails 4 and 4 having a substantially U-shaped cross section having an engaging portion outward in the left-right direction. The vehicle is guided and can travel, and is driven along the rail by being pulled by a self-propelled trolley 6 described in detail later. Further, the object W to be conveyed is placed and fixed on the object support member 17...

  Guide rollers 19 are in contact with the lateral side surfaces of the fixed rails 3 and 3 or the movable rails 4 and 4 in the left-right direction, and the guide rollers function as a lateral anti-sway. The front and rear frames 13 and 14 are provided with protrusions 13a, 13b, 14a, and 14b that protrude to the left and right outside of the left and right frames 15 and 16, but the protrusions 13a, 13b, 14a, and 14b are It may be formed integrally with the front and rear frames 13, 14 or may be attached to the left and right frames 15, 16.

  A support column 22 is erected on the base 21 fixed to the floor surface FL, and a guide rail 23 extending vertically is fixed to the support column 22. The elevating member 24 has a pair of upper guide rollers 25a and 25b that rotate while holding the guide rail 23 between the upper and lower members 24, and a pair of lower guide rollers 26a that rotate while holding the guide rail 23 between the lower and upper members 24, 26b is provided, the elevating member 24 can be moved up and down along the guide rail (see arrow B in FIGS. 1 and 3). Further, a terminal 27 a of the lifting chain 27 is hooked or fixed to the upper part of the lifting member 24.

  The elevating device 7 is a device that winds and feeds the elevating chain 27 wound around the sprocket 28 by an elevating motor 29, and moves the elevating member 8 to a desired height position by the elevating device. Can do. The output of the elevating motor 29 is used for rotating the sprocket 28 by converting the rotation direction by, for example, a bevel gear and then amplifying the torque through a reduction gear. The positioning in the height direction may be performed by, for example, detecting the position of the elevating member 24 by using a sensor such as a limit switch (not shown) provided on the support column 22 or the guide rail 23 and controlling the elevating motor 29, as well as a limit not shown. After the origin of the height position of the elevating member 24 is obtained by a sensor such as a switch, the relative position from the origin is calculated from the output of a rotation angle sensor such as an encoder provided in the elevating motor 29, and the elevating motor 29 is calculated. It is possible to adopt a method for controlling the above.

  The lifting device 7 is not limited to the above configuration, and a configuration using pulleys and wire ropes instead of the sprocket 28 and the lifting chain 27 or a vertically extending rack is fixed to the support column 22. A configuration in which a pinion provided on the elevating member 24 is engaged with the rack and the pinion is driven by an elevating motor may be employed.

  A combination angular ball bearing, a double-row angular ball bearing, a cross roller bearing or the like (not shown) is incorporated in the elevating member 24, and the cage 5 is supported by the bearing and conveys the article W to be conveyed to the elevating member 24. It can be rotated around a horizontal axis (see arrow X in FIG. 3) orthogonal to the direction (see arrow A in FIG. 1) (see arrow C in FIG. 3). As shown in FIG. 3, the cage 5 supports the movable rails 4 and 4 with an offset from the pivot shaft (see arrow X in FIG. 3) in a substantially L shape when viewed from the front. It is formed as follows. Therefore, since the moment of inertia of the load around the rotation shaft can be further reduced, the capacity of the rotation device described later can be reduced and the speed response of the rotation operation is improved.

  The rotating device 8 rotates the cage 5 around the horizontal axis (see arrow X in FIG. 3), and the center of the rotating motor 30 is separated from the horizontal axis so that a spur gear or a sprocket is provided. In addition, a configuration in which the cage 5 is rotated by a chain, a configuration in which the cage 5 is rotated via a planetary gear speed reducer with the horizontal axis and the axis of the rotation motor 30 being aligned, and the like can be adopted. . The angle of the rotation direction is determined by, for example, controlling the rotation motor 30 by detecting the angle of the cage 5 by a sensor such as a limit switch (not shown) provided on the elevating member 24, as well as a limit switch (not shown). After the origin of the angle of the cage 5 is determined by the sensor, a method of controlling the rotation motor 30 by calculating a relative angle from the origin from the output of a rotation angle sensor such as an encoder provided in the rotation motor 30, etc. Can be adopted.

  By using the lifting device 7 and the rotating device 8 configured as described above, the lifting and lowering operation of the transported object W placed and fixed on the cage 5 and the horizontal axis orthogonal to the transporting direction of the transported object W are provided. A rotating operation is possible.

  FIG. 4 is a right side view for explaining the configuration and operation of the self-propelled trolley 6 which is a traveling drive device that causes the carrier 2 to travel along the rails 3, 3 and 4, 4. The self-propelled trolley 6 can travel along the travel rail R by guide rollers 31, 31, 32, and 32 that engage with the travel rail R having a substantially I-shaped cross section, that is, the transport direction of the article to be transported W (see FIG. 1), and is supported so as to be able to travel in a direction opposite to the conveying direction. The self-propelled trolley 6 travels along the travel rail R by driving a travel roller 33 (see FIG. 3) that is in contact with the lower surface of the travel rail R by the travel motor 34. In addition, since the auxiliary trolley 35 that can run by engaging with the traveling rail R is connected to the self-propelled trolley 6 via a connecting rod 36 (see FIG. 1), More stable driving is possible. In addition, although the self-propelled trolley 6 was shown as an example of the traveling drive device for moving the carrier 2 along the rails 3, 3, 4 and 4, a traveling drive device using a friction roller, a traveling drive device using a power chain, etc. It may be adopted.

  An upper end 37 a of the upper link 37 is pivotally attached to the support plate 39, and a lower end 37 b is pivotally attached to the upper end 38 a of the lower link 38. Further, an intermediate portion of the upper link 37 protrudes in the transport direction of the transported object W, and a leading end 37 c of the projecting portion is pivotally attached to a leading end of the piston rod 43 a of the electric cylinder 43. A lower end 38b of the lower link 38 is pivotally attached to one clamping member 42a. Therefore, one clamping member 42a rotates around the pivot 40a via the upper link 37 and the lower link 38 by the expansion and contraction of the piston rod 43a of the electric cylinder 43 (see arrow D1 in FIG. 4).

  A spur gear 41a is fixed to one clamping member 42a, and a spur gear 41b that engages with the spur gear 41a is fixed to the other clamping member 42b. Accordingly, in conjunction with the rotation of the one clamping member 42a (see arrow D1 in FIG. 4), the other clamping member 42b also rotates in the direction opposite to the clamping member 42a around the pivot 40b (in FIG. 4). (See arrow D2). In this manner, the pair of clamping members 42a and 42b can be opened and closed by expansion and contraction of the piston rod 43a of the electric cylinder 43. Therefore, the carrier 2 is pulled by the self-propelled trolley 6 and moved along the fixed rails 3 and 3 or the movable rails 4 and 4 by clamping the protruding portion 13a of the carrier 2 by the clamping members 42a and 42b. Can be made. Further, if the holding members 42 a and 42 b are opened to release the holding of the protruding portion 13 a of the carrier 2, it is possible to eliminate transmission of driving force due to traction from the self-propelled trolley 6 to the carrier 2.

  The connecting device 10... That eliminates the positional deviation between the fixed side rails 3 and 3 and the movable side rails 4 and 4 shown in FIG. 1 includes a fixed side connecting device 10a provided on the fixed side rail 3 and a movable side rail. 4 and a movable side connection device 10b. For example, the connecting device 10 may be formed by using a driving device such as an electric cylinder (not shown) to connect a protruding piece such as a plate or a tube protruding from one of the fixed-side connecting device 10a and the movable-side connecting device 10b to the other. The fixed side rails 3 and 3 and the movable side rails 4 and 4 are connected by being sandwiched by guide means such as upper, lower, left and right rollers provided on the other side of 10a and the movable side connection device 10b. Accordingly, the positional deviation between the fixed side rails 3 and 3 and the movable side rails 4 and 4 can be eliminated, and the carrier 2 can be prevented from dropping from the rails. The reliability of delivery of the carrier 2 between the rails 4 and 4 can be improved.

  However, such a connecting device 10 is not essential for the conveying device according to the present invention, and the positioning of the movable side rails 4, 4 with respect to the fixed side rails 3, 3 by the elevating device 7 is high or When the weight of the conveyed product W is light, etc., the connection devices 10 are not necessarily provided. For example, when the positioning accuracy of the movable side rails 4 and 4 with respect to the fixed side rails 3 and 3 by the elevating device 7 is high, a brake is attached to the elevating motor 29 of the elevating device 7 to fix the fixed side rails 3 and 3 to the movable side. If the brake is activated after positioning with the rails 4 and 4, the movable side when the carrier 2 is transferred from the fixed side rails 3 and 3 to the movable side rails 4 and 4 by being pulled by the self-propelled trolley 6. Problems such as lowering of the rails and eventually dropping of the object to be conveyed can be suppressed.

  FIG. 5 is a right side view for explaining the configuration and operation of the carrier lock device 9 capable of fixing the carrier 2 and the cage 5 and releasing the fixation. The carrier lock device 9 is provided on the cage 5, and the carrier 2 transferred from the fixed side rails 3 and 3 to the movable side rails 4 and 4 on the cage 5 is fixed to the cage 5 by the self-propelled trolley 6. To do.

  A lower end 45 b of the lower link 45 is pivotally attached to the support plate 44, and an upper end 45 a is pivotally attached to the lower end 46 b of the upper link 46. An intermediate portion of the lower link 45 protrudes in the transfer direction of the article to be transferred W, and a tip 45c of the protrusion is pivotally attached to a tip of the piston rod 50a of the electric cylinder 50. The upper end 46a of the upper link 46 is pivotally attached to one clamping member 47a. Therefore, one clamping member 47a rotates around the pivot 48a via the lower link 45 and the upper link 46 by the expansion and contraction of the piston rod 50a of the electric cylinder 50 (see arrow E1 in FIG. 5).

  A spur gear 49a is fixed to one clamping member 47a, and a spur gear 49b that engages with the spur gear 49a is fixed to the other clamping member 47b. Accordingly, in conjunction with the rotation of the one clamping member 47a (see arrow E1 in FIG. 5), the other clamping member 47b also rotates in the opposite direction to the clamping member 47a around the pivot 48b (in FIG. 5). (See arrow E2). In this way, the pair of clamping members 47a and 47b can be opened and closed by expansion and contraction of the piston rod 50a of the electric cylinder 50. Therefore, the carrier 2 can be fixed to the cage 5 by holding the fixing vertical piece 20a of the carrier 2 by the holding members 47a and 47b. Further, it is easy to release the fixing by opening the clamping members 47a and 47b.

  FIG. 6 is an explanatory diagram of an operation for entering the transported object W into the processing tank 12. As described above, the carrier 2 pulled by the self-propelled trolley 6 and delivered to the movable rails 4 and 4 on the cage 5 is fixed to the cage 5 by the carrier lock device 9. In this state, the object to be transported W placed and fixed on the carrier 2 is in a substantially horizontal state (see state H1 in FIG. 6). From this substantially horizontal state, the object W to be conveyed is brought into a substantially vertical state by the rotating device 8 (see state V in FIG. 6), and is further reversed from the substantially horizontal state by the rotating device 8. The conveyed object W is rotated to the substantially horizontal state (see the state H2 in FIG. 6). Then, the carrying object W enters the treatment tank 12 and is immersed in the treatment liquid 11 while simultaneously performing the rotation operation and the lowering operation of the conveyance object W by the elevating device 7 (FIG. 6). (See arrow F inside.) Moreover, what is necessary is just to perform operation | movement contrary to the operation | movement at the time of the said tank entry, for example, the tank from the processing tank 12 of the to-be-conveyed object W after completion | finish of processes, such as the electrolytic coating process to the to-be-conveyed object W.

  Alternatively, as described above, the article to be conveyed W fixed to the cage 5 and in a substantially horizontal state (see the state H1 in FIG. 6) is brought into a substantially vertical state by the rotating device 8. (See state V in FIG. 6). Then, from this state, the rotating device 8 rotates the transported object W to the approximately horizontal state (see state H2 in FIG. 6) obtained by inverting the transported object W from the approximately horizontal state, and the above-described rotation operation. The conveyed object W may be entered into the processing tank 12 while simultaneously performing the lowering operation of the conveyed object W by the lifting device 7.

  By such an operation, the posture of the transported object W when entering the processing tank 12 becomes an intermediate state between the substantially vertical state and the substantially horizontal state, and therefore, when the transported object W enters the processing liquid 11. Resistance can be reduced. Moreover, in the immersion state (refer to state H2 in FIG. 6) of the transported object W in the processing liquid 11, the transported object W is reversed (for example, when the transported object is an automobile body, Since the roof portion is turned upside down, the air accumulation of the conveyed object W can be eliminated. Furthermore, by the said tank operation | movement, the resistance at the time of the liquid discharge of the to-be-conveyed object W from the process liquid 11 can be made small, the liquid drainage property of the to-be-conveyed object W can be improved, and the reduction | decrease of the process liquid 11 Can be suppressed. Furthermore, since the descending operation or the ascending operation and the rotating operation are performed simultaneously, the conveyance time can be shortened and the productivity can be improved. In addition, the length of the processing tank 12 in the transport direction (see L in FIG. 6) can be shortened by the above operation as compared to the prior art, and the depth of the processing tank 12 (depth of the processing liquid 11). 6 can be made shallower. Therefore, the overall length of the production line can be shortened, the processing tank can be downsized, and the amount of processing liquid can be reduced.

  As described above, the simultaneous operation of the lowering operation of the conveyed object W by the elevating device 7 and the rotating operation of the conveyed object W by the rotating device 8 makes the elevating device 7 and the rotating device 8 the same control device (so-called “so-called”). A so-called PTP control (point to point control) may be performed from the substantially vertical state (see arrow V in FIG. 6) to the substantially horizontal state (see state H2 in FIG. 6) by a multi-axis control device. . Alternatively, a path on the way from the substantially vertical state (see arrow V in FIG. 6) to the substantially horizontal state (see state H2 in FIG. 6) is problematic due to interference between the processing tank 12 and the object W to be conveyed. In such a case, what is necessary is to perform so-called CP control (continuous path control) in which a target posture of the conveyed object W is continuously prepared and a path is set. In addition, the simultaneous operation of the lowering operation of the transported object W by the lifting device 7 and the rotating operation of the transported object W by the rotating device 8 can program the driving circuit of the lifting device 7 and the driving circuit of the rotating device 8. It can also be performed by driving in synchronization with a controller.

  FIG. 7 is an explanatory diagram of the operation of swinging the transported object W within the processing tank 12. In the immersion state of the object to be conveyed W in the processing liquid 11 (see state H2 in FIG. 6), the object to be conveyed W can be swung by the rotating device 8 (see arrow G in FIG. 7). ) By such a swinging operation using the rotating device 8, it is possible to more efficiently eliminate the accumulation of air in the conveyed object W without adding a swinging drive device.

It is a schematic right view which shows the conveying apparatus which concerns on embodiment of this invention. It is a schematic plan view which shows the conveying apparatus which concerns on embodiment of this invention. It is a schematic front view (figure seen from the front) which shows the conveying apparatus which concerns on embodiment of this invention. It is a right view for composition and operation explanation of a self-propelled trolley. It is a right view for composition and operation explanation of a carrier lock device. It is explanatory drawing of the operation | movement which enters a to-be-conveyed object into a processing tank. It is explanatory drawing of the operation | movement which rocks a to-be-conveyed object within a processing tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Transfer device 2 Carrier 3 Fixed side rail 4 Movable side rail 5 Cage 6 Self-propelled trolley (travel drive device)
7 Lifting device 8 Rotating device 9 Carrier lock device 10 Connection device 11 Processing liquid 12 Processing tank 13a Protruding portion 17 Conveyed object support member 18 Traveling roller 19 Guide roller 20a Fixing vertical piece 21 Base 22 Post 23 Guide rail 24 Lifting member 25a, 25b Upper guide roller 26a, 26b Lower guide roller 27 Lifting chain 28 Sprocket 29 Lifting motor 30 Turning motor 34 Traveling motor 37 Upper link 38 Lower link 42a, 42b Holding member 43 Electric cylinder 43a Piston rod 45 Lower link 46 Upper link 47a, 47b Holding member 50 Electric cylinder 50a Piston rod R Running rail

Claims (4)

A fixed-side rail and a movable-side rail, which are provided so as to be able to deliver a carrier for placing and fixing the object to be conveyed, and guide the carrier so as to be able to travel;
A travel drive device for traveling the carrier along the rail;
A cage for supporting the movable rail, which is moved up and down by a lifting device and rotated around a horizontal axis perpendicular to the conveying direction of the conveyed object by a rotating device;
A carrier locking device capable of fixing the carrier and the cage or movable rail and releasing the fixing;
A treatment tank for storing a treatment liquid for performing treatment such as electrolytic coating treatment or pre-treatment on the object to be conveyed;
The carrier driven by the travel driving device and delivered from the fixed side rail to the movable side rail is fixed to the cage or the movable side rail by the carrier lock device. The object to be transported enters the processing tank while simultaneously performing a lowering operation by an apparatus, and the object to be transported is performed while simultaneously performing a rotating operation by the rotating device and an ascending operation by the lifting device. A conveying apparatus characterized by being discharged from the processing tank.   The substantially horizontal state of the object to be transported, which is placed and fixed on the carrier fixed to the cage or the movable rail by the carrier lock device, passes from the substantially horizontal state to the substantially vertical state, and further to the substantially horizontal state. The object to be transported is placed in the processing tank while simultaneously performing a rotating operation by the rotating device that rotates to a substantially horizontal state reversed from a lower position and a lowering operation by the lifting device. Item 2. The conveying device according to Item 1.   The object to be conveyed in a substantially horizontal state, which is placed and fixed on the carrier fixed to the cage or the movable rail by the carrier lock device, is brought into a substantially vertical state by the rotating device, and the substantially horizontal state is changed from the vertical state to the substantially horizontal state. The transported object is placed in the processing tank while simultaneously performing a rotating operation by the rotating device and a descending operation by the lifting device from a state to a substantially horizontal state reversed. The transfer apparatus according to 1.   The transport apparatus according to claim 1, further comprising a connection device that eliminates a positional shift between the fixed side rail and the movable side rail when the carrier is transferred between the fixed side rail and the movable side rail.

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