JP4766982B2 - Cartridge cover, cover attaching / detaching device, and coating system - Google Patents

Description

  The present invention relates to a paint cartridge. In particular, a paint system including a paint cartridge filled with paint, a paint machine equipped with the paint cartridge and performing painting by supplying the paint, and a transfer unit for transferring the paint machine main body along a predetermined path Etc.

  The painting of a work such as an automobile body is performed by, for example, a painting machine equipped with a paint cartridge. The paint cartridge is detachably attached to the coating machine (see, for example, Patent Document 1). Painting by the coating machine is performed in a predetermined coating booth, but the transfer (detachment) of the paint cartridge is performed in a separate transfer device.

Briefly describing the transfer of the paint cartridge in such a coating system, the transfer device includes a stock mechanism for stocking a plurality of paint cartridges, for example. The paint cartridge appropriately taken out from the stock mechanism is filled with a predetermined color paint by the filling mechanism. Then, the filled paint cartridge is mounted on the coating machine, and the painted paint cartridge mounted on the coating machine is moved to the retracted position, and then stocked in the stock mechanism.
JP-A-11-000591

  However, while painting is being performed in the painting booth, rebound paint or the like may adhere to the paint cartridge. In other words, when the paint machine equipped with the paint cartridge after painting returns to the transfer device and the paint cartridge after painting is replaced with a new paint cartridge, the paint must adhere to the surface of the paint cartridge after painting. Is concerned.

  Then, when the paint is attached in this manner, the paint comes into contact with the new paint cartridge by contacting with the new paint cartridge, and is also in close contact (adhesion) with the new paint cartridge. May be caused. In this case, each cartridge may be displaced, which may hinder various controls (for example, position control and movement control).

  Also, in the transfer device, a wide variety of paints are filled. However, if the control management of the paint to be filled is performed based on, for example, a barcode attached to the paint cartridge, the barcode is soiled. In such a case, there is a concern that accurate reading cannot be performed and a wrong color paint is filled.

  Therefore, the present invention has a technical problem to provide a cartridge cover, a cover attaching / detaching device, and a coating system that can prevent problems in transferring and replacing a paint cartridge.

  In the following, each means suitable for solving the above-described problems will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

  Means 1. A paint cartridge filled with paint, a coating machine equipped with the paint cartridge and performing painting by supplying the paint, a transfer unit for transferring the paint machine body along a predetermined path, and a paint cartridge A coating system comprising: a holding unit that holds a cartridge cover that covers the side wall and the top wall; and an attachment / detachment unit that attaches / detaches the cartridge cover to / from the paint cartridge.

  According to the means 1, the coating is performed by the coating machine in a state where the paint cartridge filled with the paint is mounted. Further, at least the coating machine main body is transferred along a predetermined path by the transfer unit. Now, in means 1, the cartridge cover is held by the holding portion, and the cartridge cover is attached to and detached from the paint cartridge by the attaching / detaching portion. By attaching the cover, the side wall and the top wall of the paint cartridge are covered. For this reason, if the cover is attached and used for painting, even if paint adheres to the cover, it does not adhere to the cartridge. Accordingly, if the cover is removed after the painting is finished, the paint is not adhered to the painted cartridge surface. That is, not only the paint cartridge filled with paint but also the paint cartridge surface after painting does not adhere to the paint cartridge, and as a result, it is possible to prevent various problems in transferring and replacing the paint cartridge.

  Mean 2. A stock mechanism that stocks a plurality of paint cartridges, a filling mechanism that fills a paint cartridge taken out from the stock mechanism, a paint cartridge that is taken out from at least the stock mechanism, and the paint cartridge that is filled with paint A cartridge replacement mechanism for executing mounting on a coating machine, movement of a painted paint cartridge mounted on the coating machine to a retracted position, and movement of the paint cartridge at the retracted position to the stock mechanism. The coating system according to the means 1, characterized by comprising:

  According to the means 2, a plurality of paint cartridges are stocked in the stock mechanism, and the paint cartridge taken out from the stock mechanism is filled with the paint by the filling mechanism. At least the paint cartridge is taken out from the stock mechanism, the paint cartridge filled with paint is mounted on the coating machine, the painted paint cartridge mounted on the coating machine is moved to the retracted position, and the paint cartridge is in the retracted position. The movement of the paint cartridge to the stock mechanism is executed by the cartridge replacement mechanism. When a painted paint cartridge is replaced with a new paint cartridge, there is a concern about the adhesion of the paint taken during painting. In this respect, since the cover is attached so as to cover at least the side wall and the top wall of the paint cartridge, the same effect as that of the means 1 can be obtained.

  Means 3. Predetermined identification information about the paint is attached to the paint cartridge, and the identification information is read at least before the paint is filled by the filling mechanism, and based on the read result, the paint cartridge by the filling mechanism is read. The painting system according to means 2, characterized by comprising a control device for controlling the filling.

  According to the means 3, in addition to the operational effects of the invention described in the means 2, the paint cartridge is given predetermined identification information relating to the paint. The identification information is read at least before the paint is filled by the filling mechanism, and the filling of the paint by the filling mechanism is controlled based on the read result. Thereby, it is possible to determine whether or not the paint to be filled is appropriate for the paint cartridge, and for example, it is possible to eliminate the problem of filling the wrong color paint. By the way, under the configuration in which such identification information is attached, if the identification information is stained with paint, accurate reading cannot be performed, and the significance of attaching the corner identification information is lost. In this respect, as described above, since the paint does not adhere to the surface of the paint cartridge, accurate reading can be ensured.

Means 4. To paint cartridge to coater Ru mounted detachably, a cartridge cover which is detachably mounted, the cover includes a side wall portion covering a side wall periphery of at least the paint cartridge, the top wall of the paint cartridge A cover body comprising a top wall portion covering at least the top wall portion, wherein at least the top wall portion has a ventilation structure that restricts the intrusion of the scattered paint and allows ventilation between the inside and the outside. Cartridge cover.

  According to the means 4, the outer periphery of the side wall of the paint cartridge is protected from the paint by the side wall portion of the cover body, and the top wall of the paint cartridge is protected from the paint by the top wall portion. In addition, the above-described effects can be achieved with a relatively simple process of covering the paint cartridge from above. In addition, at least the top wall portion has a ventilation structure that restricts the internal penetration of the scattered paint and allows ventilation between the inside and the outside. For this reason, as well as being able to protect the paint cartridge from the scattered paint, when the cover is put on the paint cartridge, the inside of the cover is not sealed, and the air in the cover escapes smoothly to the outside. The cover can be covered smoothly. In addition to this, even if the diameter of the side wall portion is close to the diameter of the paint cartridge, it can be smoothly covered, so that there is an advantage that it is possible to suppress an unnecessary increase in the size of the cover.

  Means 5. The cartridge cover according to means 4, wherein the cover body is constructed by assembling one transparent resin sheet in an unfolded state.

  According to the means 5, the ventilation structure described in the means 4 can be relatively easily ensured by assembling one transparent resin sheet in a developed state. For example, when it is set as the structure assembled | attached by inserting a latching claw in a slit-shaped latching hole, air permeability can be ensured with the fine clearance gap by a latching hole. Moreover, since the cover can be obtained relatively easily without using a large-scale molding machine (for example, an injection molding machine or a blow molding machine), an increase in equipment cost can be suppressed.

  Means 6. The cartridge according to claim 4 or 5, wherein the top wall portion includes an upper protrusion that protrudes upward and a lower protrusion that protrudes downward and fits into a recess provided on the top of the paint cartridge. cover.

  According to the means 6, the top wall portion is provided with the upper protrusion protruding upward and the lower protrusion protruding downward, so that it can be lifted or pushed down by gripping the upper protrusion, etc. The cover can be easily attached and detached. In particular, in the means 6, since the lower protrusion is fitted into the recess provided on the top of the paint cartridge, it can be attached to the paint cartridge, so that it can be mounted more stably than when the cover is simply covered. Can be maintained. Therefore, for example, even if an upward stress is applied during painting (for example, even if a strong wind is blown), a situation in which the cover is removed is unlikely to occur. In addition, since the lower protrusion can be attached simply by fitting it into the recess, the workability during attachment / detachment can be improved. That is, there is an effect that it is possible to improve workability at the time of attachment / detachment while stabilizing the attachment state.

  Mean 7 The cartridge cover according to claim 6, wherein an elastic member is provided on an outer peripheral portion of the lower protrusion.

  According to the means 7, in addition to the function and effect of the means 6, it is possible to further improve the workability in attaching and detaching while further stabilizing the mounting state by the elastic force and elastic deformation of the elastic member. An example of the elastic member is a rubber O-ring.

  Means 8. A through hole is formed in the top wall portion, and the upper protrusion and the lower protrusion are sandwiched between the top wall portion at the periphery of the through hole in a state where the upper protrusion or the lower protrusion is inserted into the through hole. The cartridge cover according to claim 6 or 7, wherein the cartridge cover is fixed.

  According to the means 8, the upper projection and the lower projection can be attached to the cover body relatively easily. In particular, when one of the upper protrusion and the lower protrusion is screwed to the other, the protrusion can be fixed without using any special fixing means.

  Means 9. A cover attaching / detaching device for attaching / detaching the cartridge cover according to any one of means 4 to 8 to / from a paint cartridge.

  According to the means 9, the cover can be automatically attached and detached, so to speak, without depending on the hand.

  Means 10. A cover body including a side wall covering the outer periphery of the side wall of the paint cartridge and a top wall covering the top wall of the paint cartridge; at least the top wall regulates internal entry of the scattered paint and The top wall is provided with an upper protrusion protruding upward and a lower protrusion protruding downward, and the lower protrusion is formed on the top of the paint cartridge. A cover attaching / detaching device for attaching / detaching a cartridge cover that can be attached to the paint cartridge by being fitted in a recessed portion provided to the paint cartridge, the holding means capable of holding the upper protrusion, and the upper protrusion A cover attaching / detaching device comprising: pressing means for fitting the lower protrusion into the recess of the paint cartridge by pressing down.

  According to the means 10, the upper protrusion of the cover is gripped by the gripping means of the cover attaching / detaching device. Therefore, the cover can be attached and detached by moving the gripping means up and down while maintaining the gripping state. In particular, the upper protrusion is pushed down by the pressing means, so that the lower protrusion is fitted into the recess of the paint cartridge. For this reason, as described above, it is possible to improve workability at the time of attachment and detachment while stabilizing the attachment state as compared with the case of simply covering the cover.

  Means 11. The cover attaching / detaching device according to claim 10, wherein at least a first driving means for moving the gripping means up and down and a second driving means for moving the pressing means up and down are provided.

  According to the means 11, at least the gripping means is moved up and down by the first driving means, and the pressing means is moved up and down by the second driving means. As described above, the above-described effects can be achieved by simply performing a linear motion using the two driving means.

  Means 12. The gripping means is configured to be switchable between an open state and a closed state, and is always maintained in the closed state, and when the gripping means is in the closed state, the upper protrusion is gripped and the pressing means is moved downward. Accordingly, the cover attaching / detaching device according to claim 10 or 11, wherein the gripper is switched to an open state.

  According to the means 12, the upper protrusion is gripped when the gripping means is closed, and the grip is released when the gripping means is open. In particular, in this means, since the gripping means is switched to the open state as the pressing means is moved downward, it is not necessary to separately use a driving means for opening and closing. That is, in accordance with the pressing operation of the pressing means, two operations of releasing the grip and fitting the paint cartridge into the recess by the lower protrusion can be realized. Therefore, the complexity of the apparatus due to the increase in the driving means can be suppressed, and the configuration can be simplified.

Means 13. The gripping means includes a plurality of chuck arms and biasing means for biasing each chuck arm, and the tip of each chuck arm is always biased toward the center by the biasing means. The gripping means is maintained in a closed state;
The pressing means is provided so as to be able to move up and down the central axis of the gripping means. When the pressing means moves down, the tip of each chuck arm is pushed outward against the biasing force, thereby holding the gripping. The cover attaching / detaching device according to claim 12, wherein the means is in an open state.

  According to the means 13, the gripping means is maintained in the closed state by always urging the tip of each chuck arm toward the center by the urging means. For this reason, it is not necessary to apply a particular external stress when gripping, and in this sense, it is not necessary to provide an actuator or the like for chucking. Further, when the pressing means moves down the central axis of the gripping means, the tip of each chuck arm is pushed to the outer peripheral side against the biasing force, and the gripping means is opened. For this reason, the opening / closing of each chuck arm (gripping means) can be derived only by a linear movement of the pressing means up and down. Therefore, the enlargement and complication of the apparatus can be suppressed.

  Means 14. 14. The cover attaching / detaching apparatus according to claim 13, wherein a separation detecting means for detecting a separation from the upper protrusion is provided on at least one of the chuck arms.

  According to the means 14, the separation from the upper protrusion is detected by the separation detecting means provided in at least one of the chuck arms. For this reason, it can be ascertained whether or not the upper protrusion and the chuck arm are separated from each other, and as a result, whether or not the attachment is surely performed. As a result, it is possible to prevent problems caused by painting with incomplete mounting.

  An embodiment of a transfer system and the like will be described below with reference to the drawings. 2 is a side perspective view showing an example of the transfer device, FIG. 3 is a schematic plan view for explaining a schematic configuration of the transfer device, and FIG. 4 explains a schematic configuration of the filling mechanism and the color changing mechanism. It is a side surface schematic diagram for doing. In the drawings, for convenience, various pipes are indicated by dotted lines or omitted.

  The transfer apparatus 1 shown in FIGS. 2 and 3 replaces the paint cartridge 5 that is detachably mounted on the coating machine 3 of the coating apparatus. In addition, the coating machine 3 of the coating apparatus performs coating of a work such as an automobile body in a coating booth (not shown) that is separated from the transfer apparatus 1 by a predetermined distance (for example, 3 m).

The transfer device 1 stocks a paint cartridge 5 that is not filled with paint (or is empty after painting), takes out the paint cartridge 5 from the stock mechanism 7, and applies the paint cartridge 5 filled with paint. The paint cartridge 5 mounted on the painting machine 3 is moved to the retracted position (collection table 6), and the paint cartridge 5 on the retracted position (collection table 6) is moved. A cartridge exchanging mechanism 8 capable of moving to the stock mechanism 7, a filling mechanism 9 for filling the paint cartridge 5 taken out from the stock mechanism 7 with a paint, and each color paint supplied from a predetermined paint supply source is selected. And a color changing mechanism 10 that is selected and supplied to the filling mechanism 9, and each of these mechanisms is integrally assembled by a frame set 11 to form a unit. To have. In this sense, the transfer device 1 in the present embodiment constitutes a transfer unit that transfers the coating machine 3 main body along a predetermined transfer path .

  The paint cartridge 5 has a substantially cylindrical shape, and a paint filling / discharging port (not shown) for filling and discharging paint is formed on the side (lower side) facing the mounting portion 3a of the coating machine 3. Further, a concave portion 5a for mounting a cover, which will be described later, is formed on the upper surface (see FIG. 1). Further, a bar code (not shown) as identification information including information on paint (for example, paint color, paint number, etc.) is attached to a predetermined position (eg, upper side wall) of the paint cartridge 5. .

  The stock mechanism 7 includes a plurality of turntables 12 arranged in the vertical direction, and a plurality of paint cartridges 5 are stored on each turntable 12 at equal angular intervals.

  The cartridge exchange mechanism 8 includes a chucking table 16 that is moved up and down by a lift 15 and rotated in the horizontal direction, and a handling unit 17 that holds the paint cartridge 5 and reciprocates along the longitudinal direction of the chucking table 16. Yes.

  As shown in FIG. 4 and the like, the filling mechanism 9 includes a filling unit 22 having a filling connector 21 connected to the paint filling and discharging port of the paint cartridge 5, a drive unit 23 for moving the filling unit 22 up and down, and a relay described later. The coating material introduction part 26 connected via the part 55 and the paint piping 25 is provided. The filling mechanism 9 is provided with a barcode reader (not shown) that reads the barcode attached to the paint cartridge 5 immediately before filling, and the barcode reader is electrically connected to a control device described later. Connected.

  The color changing mechanism 10 is slidably mounted on a pedestal 31 fixed to the bottom 11a of the frame set 11. More specifically, the color changing mechanism 10 includes a base portion 33 slidably engaged with a guide rail 32 formed on the upper surface of the pedestal portion 31, and a front end side (filling mechanism 9 side) of the base portion 33. A support shaft portion 35 that is erected, a gate block 36 that is pivotable about the vertical direction at the upper end portion of the support shaft portion 35, and a rear base portion that is erected on the rear end side of the base portion 33 37, a pair of support shafts 38a and 38b erected on the upper end of the rear base 37, and manifolds provided at the upper ends of the support shafts 38a and 38b so as to be rotatable about the vertical direction. The blocks 39a and 39b and a grip 40 for sliding operation provided on the rear surface of the rear base 37 are configured. In addition, stoppers 41 a and 41 b that can contact the front and rear end portions of the base portion 33 are provided at the front and rear end portions of the base portion 31.

  Each manifold block 39a, 39b is provided with a plurality of color change valves 43 along the vertical direction. Each color change valve 43 has various connection ports such as a paint pipe 44 for supplying paint from a paint supply source (not shown) and an air pipe 45 for supplying air for opening and closing the color change valve 43 by air pressure. 46 is connected. On the other hand, each manifold block 39a, 39b has a paint supply path (not shown) communicating with the paint pipe 44, and the paint supply path is connected to a paint supply path (not shown) of the gate block 36 via the paint pipe 50. ing. A paint discharge portion 51 is provided at the downstream end of the paint supply path of the gate block 36.

  A relay unit 55 is provided between the filling mechanism 9 and the color change mechanism 10, and the relay unit 55 and the paint discharge unit 51 of the gate block 36 are connected by a coupling coupler 57 that can be attached and detached with one touch. Yes.

  Next, an outline of a series of operation modes of the transfer apparatus 1 will be described. The stock mechanism 7, the cartridge replacement mechanism 8, the filling mechanism 9, and the color change mechanism 10 are configured to be driven and controlled by a predetermined control device.

  First, when the turntable 12 is rotationally controlled in the stock mechanism 7 and a predetermined paint cartridge 5 is positioned at the take-out position P1 (see FIG. 3), the chucking table 16 is raised to that position, and the handling unit 17 is moved to the paint. The cartridge 5 is taken out.

  Subsequently, after the chucking table 16 is lowered at the paint filling position P <b> 2, the filling unit 22 of the filling mechanism 9 is raised, and the filling connector 21 is connected to the paint filling discharge port of the paint cartridge 5. At this point, preparation for filling is completed. At this timing, the bar code attached to the paint cartridge 5 is read by the bar code reader. In the control device, the color of the paint, the paint number, and the like are confirmed based on the read code information. In addition, the color change mechanism 10, the filling device 9, and the like are controlled, and the paint cartridge 5 is filled with a predetermined paint. When the filling of the paint is completed, the filling unit 22 is lowered.

  When the coating machine 3 is positioned at the replacement position (mounting position) P3, the chucking table 16 rotates and faces the replacement position P3. At this time, a painted paint cartridge 5 is mounted on the painting machine 3.

  Subsequently, when the handling unit 17 pushes the (new) paint cartridge 5 filled with paint to the replacement position P3, the paint cartridge 5 is transferred from the chucking table 16 to the mounting portion 3a of the painting machine 3. The painted paint cartridge 5 that has been mounted on the mounting portion 3 a of the coating machine 3 is pushed to a predetermined position on the collection table 6 so as to be pushed by the paint cartridge 5.

  Thereafter, when the coating machine 3 leaves the replacement position P3, the painted paint cartridge 5 is again collected from the collection table 6 by the handling unit 17, and after washing, returned to the stock mechanism 7 (stocked again).

  The above is the outline of the transfer device 1. Hereinafter, the cartridge cover 61 and the attachment device 81 for attaching and detaching the cover 61 used in the transfer system will be described in detail.

  First, the configuration of the cartridge cover 61 (hereinafter simply referred to as “cover”) used in the present embodiment will be described. As shown in FIG. 5, the cover 61 covers the outer periphery of the side wall of the substantially cylindrical paint cartridge 5, and has a side wall 62 that is slightly larger in diameter than the paint cartridge 5 and the top wall that covers the top wall of the paint cartridge 5. A cover main body 64 including a portion 63 is provided. As shown in FIG. 6A, the cover main body 64 is configured by assembling one transparent resin sheet 64A (for example, made of polyethylene in this embodiment) in an unfolded state. That is, the transparent resin sheet 64A includes a side wall constituting portion 62A and a plurality of pieces of the top wall constituting portion 63A provided integrally on one side of the side wall constituting portion 62A. Each of the constituting portions 62A and 63A includes: Locking holes 62b and 63b and locking claws 62c and 63c are formed, respectively. Then, the side wall constituting portion 62A is rounded into a cylindrical shape, and the top wall constituting portion 63A is bent toward the center, and the engaging claws 62c and 63c are engaged with the corresponding engaging holes 62b and 63b, thereby covering the cover main body. 64 is assembled (see FIG. 6B). By this assembly, the ceiling wall portion 63 and the side wall portion 62 are restricted from entering the inside of the scattered paint, while the presence of the locking holes 62b and 63b allows the ventilation between the inside and outside of the cover body 64. It has become.

  By the assembly, a through hole 65 is formed at the center of the top wall portion 63 of the cover main body 64. In the present embodiment, the projection 66 is fixedly attached so as to correspond to the through hole 65. More specifically, as shown in FIG. 5, the protrusion 66 is composed of an upper protrusion 67 that protrudes upward and a lower protrusion 68 that protrudes downward. The upper protrusion 67 is mainly held by an attaching / detaching device 81 described later or receives stress of vertical movement. The lower protrusion 68 is fitted into the recess 5 a of the paint cartridge 5 when the paint cartridge 5 is mounted.

  As shown in FIGS. 7A and 7B, the upper protrusion 67 includes a synthetic resin bolt 72 including a large-diameter head 69, a body portion 70, and a male screw portion 71, and an annular magnet 73. And an annular resin ring 74. The lower protrusion 68 is made of a synthetic resin and is mainly configured by a nut 75 having an internal thread formed on the inner periphery. The nut 75 is screwed in a state where the magnet 73 and the resin ring 74 are externally fitted to the body portion 70 of the bolt 72 and the male screw portion 71 of the bolt 72 is inserted into the through hole 65. Thus, the upper protrusion 67 and the lower protrusion 68 are fixed to each other so as to sandwich the top wall portion 63 at the periphery of the through hole 65.

  An annular housing groove 76 is formed on the lower end surface of the resin ring 74, and an O-ring 77 is fitted in the housing groove 76. Thereby, the firm fixation at the time of the said screwing can be ensured. Further, a constricted portion 78 is formed on the outer periphery of the nut 75, and an O-ring 79 as an elastic member is fitted on the constricted portion 78. Accordingly, the fitting into the concave portion 5a is smoothly and firmly performed, and the mounting state is stabilized.

  Next, the attachment / detachment device 81 will be described. As shown in FIG. 8, the attachment / detachment device 81 includes a gripping means 82 and a pressing means 83. The gripping means 82 includes a support plate 85 supported by a first cylinder 84 as a first drive means so as to be movable up and down, a plurality of (for example, three) brackets 86 attached and fixed to the lower surface of the support plate 85, The base end portion includes a plate spring 87 as an urging means attached to the bracket 86 and a chuck arm 88 attached to the tip of the plate spring 87. The leaf spring 87 normally biases each chuck arm 88 so that the tip of each chuck arm 88 is located at the center, as shown by the solid line in FIG. Configured to be maintained.

  The lower end of the chuck arm 88 is a hook-shaped hook portion 89, and the upper protrusion 67 is held (locked) by the hook portion 89. The inner lower surface of the hook portion 89 is a tapered surface. In addition, a through hole is formed in at least one of the plurality of hook portions 89, and a reed switch 90 as a separation detecting unit is provided in the through hole. The reed switch 90 can detect the presence of the magnet 73. When the hook portion 89 is opened and separated from the upper protrusion 67 (magnet 73), the reed switch 90 is turned off and separated. This can be detected. Further, a tapered surface 91 is formed inside the upper portion of the chuck arm 88.

  The pressing means 83 includes a push rod 93 supported by a second cylinder 92 as a second driving means so as to be movable up and down. Although not shown, the first cylinder 84 and the second cylinder 92 are disposed on the same axis, so that the push rod 93 also moves up and down as the gripping means 82 including the support plate 85 moves up and down. It has become. Furthermore, only the push rod 93 can be moved up and down relative to the gripping means 82 with the operation of the second cylinder 92. The first cylinder 84 and the second cylinder 92 are both driven and controlled by the predetermined control device described above.

  Next, the attaching / detaching operation of the cover 61 by the attaching / detaching device 81 will be described. First, when the coating machine 3 on which the painted paint cartridge 5 is mounted is positioned at the replacement position P3, the gripping means 82 is moved downward by the first cylinder 84. At this time, the inner lower surface of the hook portion 89 of the chuck arm 88 is a tapered surface, and the chuck arm 88 is pushed and expanded against the urging force as it moves downward. To do. As a result, as shown by a solid line in FIG. 8 or as shown in FIG. 9A, the upper protrusion 67 is held (locked) by the hook-shaped hook portion 89 of the chuck arm 88. From this state, when the gripping means 82 is moved upward by the first cylinder 84, the lower protrusion 68 is removed from the recess 5a, and the dirty cover 61 is moved upward and removed from the paint cartridge 5. It becomes.

  Next, when another new paint cartridge 5 is mounted on the coating machine 3, the gripping means 82 is moved down by the first cylinder 84. At the same time, the push rod 93 is moved downward by the second cylinder 92. Then, as shown by a two-dot chain line in FIG. 8 or as shown in FIG. 9B, the upper protrusion 67 is pressed by the lower surface of the push rod 93, whereby the lower protrusion 68 is The new paint cartridge 5 is fitted into the recess 5a. Further, as the push rod 93 moves downward while hitting the tapered surface 91, the tip of each chuck arm 88 is pushed outward toward the outer periphery against the urging force of the leaf spring 87. As a result, the gripping (locking) of the upper protrusion 67 by the hook portion 89 of the chuck arm 88 is released. Note that when the gripping (locking) of the upper protrusion 67 by the hook portion 89 is released, the reed switch 90 is separated from the magnet 73, and this is reliably detected by the reed switch 90.

  Then, the gripping means 82 and the push rod 93 are moved up in this state (while the chuck arm 88 is in the open state), whereby the gripping means 82 is completely separated from the cover 61, and thereafter the gripping means 82. On the other hand, by moving the push rod 93 upward, the attachment / detachment device 81 is set in a standby state. Thereafter, the paint cartridge 5 fitted with the cover 61 is moved together with the paint machine 3 to the paint booth.

  As described above in detail, according to the present embodiment, the coating machine 3 can perform painting at the painting booth, and moves between the predetermined replacement (mounting) position P3 and the painting booth. In the transfer device 1, the paint cartridge 5 filled with the paint is mounted on the coating machine 3 at the mounting position P3, and the painted paint cartridge 5 previously mounted on the coating machine 3 is collected. It is moved to the table 6. In such a system, when the painted paint cartridge 5 is replaced with a new paint cartridge 5, there is a concern about the adhesion of the paint taken during painting. In this regard, in the present embodiment, the cover 61 is mounted so as to cover at least the side wall and the top wall of the paint cartridge 5 at the mounting position P3. For this reason, if the cover 61 is attached and used for painting, even if the paint adheres to the cover 61, it does not adhere to the cartridge 5. Therefore, if the cover 61 is to be removed after returning to the mounting position P3 after the completion of painting as described above, no paint has adhered to the surface of the painted cartridge 5. That is, the paint does not adhere not only to the paint cartridge 5 filled with paint, but also to the surface of the paint cartridge 5 after painting. As a result, various problems (for example, between the paint cartridges 5) Adhesion, misalignment, etc.) can be prevented.

  In particular, the paint cartridge 5 according to the present embodiment is provided with a barcode relating to the paint, and the barcode is read before the paint is filled by the filling mechanism 9. The filling of the paint is controlled. Thereby, it is possible to determine whether or not the paint to be filled is appropriate for the paint cartridge 5, and for example, it is possible to eliminate the problem of filling the wrong color paint. On the other hand, if the bar code is stained with paint, it cannot be read accurately. In this respect, as described above, since the paint does not adhere to the surface of the paint cartridge 5, accurate reading can be ensured.

  In the present embodiment, the above-described effects can be achieved by a relatively simple process of covering the cover 61 from the top of the paint cartridge 5. As a result, no effort is required for attachment / detachment. The cover 61 has the assembly structure described above, and the side wall portion 62 and the top wall portion 63 have a ventilation structure that restricts the intrusion of the scattered paint and allows ventilation between the inside and the outside. For this reason, not only can the paint cartridge 5 be protected from the scattered paint, but also when the cover 61 is put on the paint cartridge 5, the cover 61 is not hermetically sealed, and the air in the cover 61 is not sealed. The cover can be smoothly covered by smoothly moving outside. In addition to this, even if the diameter of the side wall portion 62 is close to the diameter of the coating material cartridge 5, it can be smoothly covered, so that there is an advantage that the useless enlargement of the cover 61 can be suppressed.

  Further, the top wall portion 63 is provided with an upper protrusion 67 and a lower protrusion 68, and the cover 61 is attached to the paint cartridge 5 by fitting the lower protrusion 68 into the recess 5 a of the paint cartridge 5. For this reason, basically, the cover 61 can be easily attached to and detached from the coating material cartridge 5 by grasping the upper protrusion 67 or the like to lift or push it down, and a stable mounting state can be maintained. That is, there is an effect that it is possible to improve workability at the time of attachment / detachment while stabilizing the attachment state.

  Further, in the present embodiment, the cover 61 is attached using the attachment / detachment device 81, and the cover can be attached / detached automatically, so to speak, regardless of hand.

  In particular, the attaching / detaching device 81 according to the present embodiment can basically perform the attaching / detaching operation of the cover 61 only by operating the first cylinder 84 and the second cylinder 92. As a result, the configuration can be simplified without increasing the size and complexity of the apparatus.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) Each structure of the stock mechanism 7, the cartridge replacement mechanism 8, the filling mechanism 9, and the color replacement mechanism 10 is not limited to the above embodiment. In addition, these mechanisms may be omitted as appropriate.

  (B) In the above embodiment, the ventilation mechanism is provided on the side wall part 62 and the ceiling wall part 63, but the ventilation mechanism may be provided only on the ceiling wall part 63.

  (C) The O-rings 77 and 79 and the magnet 73 (reed switch 90) may be omitted as appropriate.

  (D) Although not particularly mentioned in the above embodiment, the cover 61 may be periodically removed and replaced. The cover 61 to which the paint has adhered can be cleaned with a predetermined organic solvent relatively easily, or can be discarded or recycled as it is.

  (E) The cover and the paint cartridge are not necessarily limited to those of the above embodiment. For example, it is good also as comprising as shown to Fig.10 (a), (b).

  As shown in the figure, the paint cartridge 100 in this example includes a main body 101 and a lid 102, and an annular groove 103 is formed on the outer periphery of the lid 102. A recess 104 is formed on the upper surface of the lid 102.

  On the other hand, the cover 111 covers the outer periphery of the side wall of the paint cartridge 100, and has a cover main body including a side wall part 112 having a slightly larger diameter than the paint cartridge 100 and a top wall part 113 covering the top of the paint cartridge 100. 114. The cover main body 114 is configured by assembling one transparent resin sheet in an unfolded state, as in the above embodiment.

  Now, the projection 116 is attached and fixed so as to correspond to the through hole 115 formed in the center of the top wall 113 of the cover body 114 by the assembly. More specifically, the protrusion 116 includes an upper protrusion 117 that protrudes upward and a lower protrusion 118 that protrudes downward. The upper protrusion 117 is mainly held by the attaching / detaching device 81 or receives a stress of vertical movement. The lower protrusion 118 mainly contributes to the mounting of the paint cartridge 100.

  The upper protrusion 117 is composed of a synthetic resin bolt 122 mainly composed of a large-diameter head portion 119, a trunk portion 120, and a male screw portion 121. In addition, a disk-shaped reinforcing polyoxymethylene hard plate 123 is interposed between the top wall portion 113 and the body portion 120 of the bolt 122. The lower protrusion 118 is mainly composed of a holder 124 made of synthetic resin, a magnet 125, and a nut 126. The holder 124 has a leg portion 124a that is formed in an annular shape or that hangs at predetermined intervals, and a locking projection 124b that protrudes inward is integrally formed at substantially the tip thereof. The nut 126 is screwed in a state where the holder 124 and the magnet 125 are externally fitted to the male screw portion 121 of the bolt 122 and the male screw portion 121 of the bolt 122 is inserted into the through hole 115. Thus, the upper protrusion 117 and the lower protrusion 118 are fixed to each other so as to sandwich the top wall portion 63 and the hard plate 123 around the periphery of the through hole 115.

  In this case, the attaching / detaching operation of the cover 111 by the attaching / detaching device 81 will be described focusing on differences from the above embodiment. The upper protrusion 67 is gripped (locked) by the hook-shaped hook portion 89 of the chuck arm 88 of the attachment / detachment device 81, and the gripping means 82 is moved upward from this state, so that the leg portion 124 a of the holder 124 is also moved. A tensile stress from above is applied, and the locking projection 124 b of the holder 124 is removed from the groove 103. At this time, the top wall 113 is subjected to bending stress due to being pulled from above, but the holder 124 is removed from the lid 102 without being deformed so much by the presence of the hard plate 123. As a result, the dirty cover 111 moves up and is removed from the paint cartridge 100.

  Next, when another new paint cartridge 100 is mounted on the coating machine 3, the gripping means 82 is moved downward. At the same time, the push rod 93 (not shown here) is moved downward. Then, the upper protrusion 117 is pressed by the lower surface of the push rod 93, whereby the locking protrusion 124 b of the holder 124 is locked in the groove 103 of the lid portion 102 of the new paint cartridge 100. It becomes. The nut 126 is accommodated in the recess 104 with a predetermined margin.

  Further, as in the above embodiment, when the grip (locking) of the upper protrusion 67 by the hook portion 89 is released, the reed switch 90 is separated from the magnet 125. 90 is reliably detected. Here, in this example, since the magnet 125 is not exposed to the outside, damage to the magnet 125, deterioration with time, and the like can be avoided.

  Then, the gripping means 82 and the push rod 93 are moved up in this state (while the chuck arm 88 is in the open state), whereby the gripping means 82 is completely separated from the cover 111, and thereafter the gripping means 82. On the other hand, by moving the push rod 93 upward, the attachment / detachment device 81 is set in a standby state. Thereafter, the paint cartridge 100 to which the cover 111 is attached is moved to the painting booth together with the painting machine 3.

It is a perspective view which shows mounting positions, such as a transfer apparatus in one Embodiment. It is a perspective view for demonstrating schematic structure of a transfer apparatus. It is a plane schematic diagram for demonstrating schematic structure of a transfer apparatus. It is a side surface schematic diagram for demonstrating schematic structure of a filling mechanism and a color change mechanism. It is a perspective view which shows the cover for paint cartridges. (A) is an expanded view of a cover main body (seat), (b) is a perspective view which shows the cover main body after an assembly. (A) is a partial cross-sectional view showing the upper protrusion and the lower protrusion in an exploded manner, and (b) is a partial cross-sectional view after the protrusion is assembled. It is a side surface schematic diagram which shows an attachment / detachment apparatus. It is a figure which shows the attachment / detachment operation | movement by an attachment / detachment apparatus, Comprising: (a) is a schematic diagram which shows the state by which the cover was hold | gripped by the holding means, (b) is a schematic diagram which shows the state by which the lower protrusion was engage | inserted by the push rod. It is. It is a figure which shows another embodiment, Comprising: (a) is a fragmentary sectional view which decomposes | disassembles and shows an upper protrusion and a lower protrusion, (b) is a fragmentary sectional view after protrusion assembly | attachment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Transfer apparatus, 3 ... Coating machine, 5,100 ... Paint cartridge, 5a ... Recess, 7 ... Stock mechanism, 8 ... Cartridge exchange mechanism, 9 ... Filling mechanism, 10 ... Color change mechanism, 61, 111 ... (Cartridge ) Cover, 62, 112 ... Side wall part, 63, 113 ... Top wall part, 64, 114 ... Cover main body, 65, 115 ... Through hole, 66, 116 ... Projection, 67, 117 ... Upper projection, 68, 118 ... Lower part Projection 73, 125 ... Magnet, 79 ... O-ring as elastic member, 81 ... Detachable device, 82 ... Holding means, 83 ... Depressing means, 84 ... First cylinder as first driving means, 87 ... As biasing means Plate spring, 88 ... chuck arm, 89 ... hook part, 90 ... reed switch as separation detecting means, 92 ... second cylinder as second driving means, 93 ... push rod.

Claims (14)

A paint cartridge filled with paint;
A coating machine equipped with the paint cartridge and performing painting by supplying paint;
A transfer unit for transferring the coating machine body along a predetermined path;
A holding part for holding a cartridge cover covering the side wall and the top wall of the paint cartridge;
A coating system comprising: an attachment / detachment portion for attaching / detaching the cartridge cover to / from the paint cartridge. A stock mechanism for stocking multiple paint cartridges;
A filling mechanism for filling the paint cartridge taken out from the stock mechanism with a paint;
Removing at least the paint cartridge from the stock mechanism, mounting the paint cartridge filled with paint on the coating machine, moving the painted paint cartridge mounted on the coating machine to the retracted position, and The coating system according to claim 1, further comprising a cartridge replacement mechanism that performs movement of the paint cartridge in position to the stock mechanism. The paint cartridge is provided with predetermined identification information about the paint,
The apparatus according to claim 2, further comprising a control device that reads the identification information at least before the paint is filled by the filling mechanism and controls the filling of the paint by the filling mechanism based on the read result. Painting system. To paint cartridge to coater Ru mounted detachably, a cartridge cover which is detachably mounted, the cover includes a side wall portion covering a side wall periphery of at least the paint cartridge, the top wall of the paint cartridge A cover body composed of a top wall covering the
The cartridge cover according to claim 1, wherein at least the top wall portion has a ventilation structure that restricts the intrusion of the scattered paint and allows ventilation between the inside and the outside.   The cartridge cover according to claim 4, wherein the cover body is configured by assembling one transparent resin sheet in an unfolded state.   The said top wall part is equipped with the upper protrusion which protrudes upwards, and the lower protrusion which protrudes below and fits into the recessed part provided in the top part of the said coating material cartridge. Cartridge cover.   The cartridge cover according to claim 6, wherein an elastic member is provided on an outer peripheral portion of the lower protrusion.   A through hole is formed in the top wall portion, and the upper protrusion and the lower protrusion are sandwiched between the top wall portion at the periphery of the through hole in a state where the upper protrusion or the lower protrusion is inserted into the through hole. The cartridge cover according to claim 6 or 7, wherein the cartridge cover is fixed.   A cover attaching / detaching device for attaching / detaching the cartridge cover according to claim 4 to / from a paint cartridge. A cover body including a side wall covering the outer periphery of the side wall of the paint cartridge and a top wall covering the top wall of the paint cartridge; at least the top wall regulates internal entry of the scattered paint and The top wall is provided with an upper protrusion protruding upward and a lower protrusion protruding downward, and the lower protrusion is formed on the top of the paint cartridge. A cover attaching / detaching device that attaches / detaches a cartridge cover that can be attached to the paint cartridge by being fitted into a provided recess,
A gripping means capable of gripping the upper protrusion;
A cover attaching / detaching device comprising: pressing means for pressing the upper protrusion to fit the lower protrusion into the concave portion of the paint cartridge. First driving means for moving up and down at least the gripping means;
The cover attaching / detaching device according to claim 10, further comprising second driving means for moving the pressing means up and down. The gripping means is configured to be switchable between an open state and a closed state, is always maintained in the closed state, and grips the upper protrusion by being in the closed state,
The cover attaching / detaching device according to claim 10 or 11, wherein the gripping means is switched to an open state in accordance with the downward movement of the pressing means. The gripping means includes a plurality of chuck arms and biasing means for biasing each chuck arm, and the tip of each chuck arm is always biased toward the center by the biasing means. The gripping means is maintained in a closed state;
The pressing means is provided so as to be able to move up and down the central axis of the gripping means. When the pressing means moves down, the tip of each chuck arm is pushed outward against the biasing force, thereby holding the gripping. The cover attaching / detaching device according to claim 12, wherein the means is in an open state. 14. The cover attaching / detaching device according to claim 13, wherein a separation detecting means for detecting a separation from the upper protrusion is provided on at least one of the chuck arms.

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