JP3607406B2 - Carriage roller driving device for load processing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a load processing apparatus that takes out a desired number of packages stacked on a pallet or the like and stacks them on another pallet or the like, and more particularly to an improvement of a carriage roller driving device in the carriage.
[0002]
[Prior art]
Conventionally, a plurality of packages stacked on each pallet may be transferred to another pallet in units of the number of stages. For example, in a canned beverage production factory, cardboard boxes containing canned beverages are stacked on pallets according to the type of beverage, and a desired number of steps are taken out from these pallets, and various pallets are prepared for each destination.
[0003]
As such a load handling device to be taken out for each level, the applicant moves a carriage between the lower part and the upper part of the stacking part, and reciprocates between the layers of the cargo stacked in the lower part. Proposals have been made to pick up the luggage by entering the platform (for example, Japanese Utility Model Publication No. 7-14266). The carriage is provided with a plurality of carriage rollers between the carriage side frames, and the leading one or two carriage rollers are driven to rotate in the scooping direction. This drive carriage roller has a lining such as silicon rubber to increase the friction coefficient and increase the friction coefficient. However, the friction coefficient decreases due to wear, and it may be broken by protrusions on the lower surface of the luggage. . Therefore, it is necessary to be replaceable, and a carriage roller driving device as shown in FIG. 10 is used.
In the apparatus shown in the figure, the top two drive carriage rollers 110 and 110 are detachably installed together with a bearing (not shown) in a common bearing box 111 that can be opened and closed up and down. An endless chain 115 is hung between the shaft pulleys 113 and 114 to transmit the drive. A tension pulley 116 is provided in the path of the chain 115.
[0004]
[Problems to be solved by the invention]
When replacing the driving carriage roller 110, first, the tension of the driving chain 115 is loosened by adjusting the position of the tension pulley 116, and the chain 115 is removed. Thereafter, the drive carriage roller 110 is removed from the bearing box 111. As described above, since the work of loosening the tension and the work of attaching and detaching the chain 115 are necessary, the work of replacing the drive carriage roller 110 is complicated.
The drive carriage roller 110 may need to be replaced when the lining is broken during operation. In such a case, if the replacement takes time, the entire line flow is delayed. Therefore, quick replacement is required.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems and to provide a carriage roller driving device for a load processing device in which the driving carriage roller can be easily and quickly replaced.
[0006]
[Means for Solving the Problems]
A load processing apparatus to which the carriage roller driving device of the present invention is applied includes a stepped-down unit having a lifting / lowering base device for loading a load in a stacked state, and a stepped stacking unit having a loading table provided in parallel with the stepped-up unit. And a carriage that has a plurality of carriage rollers between a pair of carriage side frames and that can reciprocate between the elevator unit of the lowering unit and the upper part of the loading unit of the stacking unit. It is.
The carriage roller driving device is configured to rotate one or a plurality of carriage rollers from the head on the stepped-down portion side of the carriage in the load handling device, and has the following configuration. To do. A bearing that supports the roller shaft protruding from the end of the drive carriage roller is provided, and a vertically openable and closable bearing box that accommodates the bearing is provided. Further, a gear provided on the roller shaft, and the gear, that engagement from above to the drive source and connected to the drive transmitting gear. The bearing box has a fitting recess in the dividing surface where the upper and lower parts are opened and closed. When the bearing is placed on the fitting recess, the roller shaft gear is used for the drive transmission. It is designed to mesh with the gear .
Load processing apparatus above Symbol configuration, when the carriage travels in the stepped drop-off unit, bring scooping luggage uppermost layer on the carriage roller and the rotation of the driving operation and the driving carriage roller. The picked-up luggage is transported to the step-down section by traveling in the opposite direction of the carriage, and is stacked here.
When replacing the drive carriage roller, the bearing box is opened and the drive carriage roller is lifted. Since the gear of the roller shaft is meshed with the drive transmission gear from above, the meshing of the gear can be engaged / disengaged simply by lifting or lowering the drive carriage roller. Therefore, the drive carriage roller can be easily replaced.
[0007]
In the above configuration, when the number of driving carriage rollers is two, the gears provided on both roller shafts may be meshed with one driving transmission gear. Thus, by engaging one drive transmission gear with the gears of the two roller shafts, it is possible to transmit drive to both drive carriage rollers with a simple configuration. Also in this case, by adopting a configuration in which the gear of the roller shaft is meshed with the drive transmission gear from above, the drive carriage roller can be easily attached and detached without requiring any particular engagement / disengagement operation of the drive transmission system. Bearings that support the roller shafts of both drive carriage rollers are accommodated in a common bearing box. Thereby, two drive carriage rollers can be attached and detached simultaneously.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. The overall outline will be described with reference to FIG. In this load processing apparatus, a step-down portion 1 and a stacking portion 2 are provided side by side, and a carriage 5 that reciprocates on a rail 4 of a main body frame 3 is provided between the lowering portion 1 and the stacking portion 2. The step-down unit 1 includes a carry-in conveyor 6 for loading a pallet P1 on which loads W are stacked, and a lifting platform device that lifts the loaded pallet P1 and sequentially raises the loads W at each level to the level of the carriage 5. 7. The stacking unit 2 includes a lifting platform device 9 that is a loading platform and a carry-out conveyor 8. An empty pallet P2 is placed on the lifting platform device 9, and the carriage 5 is moved from the lowering unit 2 to the carriage 5. Carried baggage is loaded. The carriage 5 has a large number of carriage rollers 10 constituting a roller conveyor. The carriage 5 picks up the cargo W one by one at the lowering portion 1 and lowers it to the stacking portion 2.
[0009]
In the upper part of the step-down part 1, there is provided a scooping alignment device 11 that sandwiches the uppermost load W when scooping up by the carriage 5, and a clamp device 12 that sandwiches the second-stage load W from the top. Yes. The scooping alignment device 11 includes an upper stopper 13 provided at a position opposite to the carriage entry side of the step-down portion 1 and a shutter 14 provided on the carriage entry side. The clamp device 12 includes a lower stopper 15 provided below the upper stopper 13 and a stopper 16 positioned below the shutter 14. This stopper 16 serves as a pusher. Above the stacking portion 2, a drop-off alignment device 19 including a stopper 17 and a shutter 18 is provided.
[0010]
Next, details of each part will be described. The lifting platform devices 7 and 9 of the step-down unit 1 and the stacking unit 2 are provided with two lifting arms 22 and 23 that are moved up and down along the guide columns 20 and 20 in parallel, and the lifting arms 22 and 23 are suspended. Elevating and lowering drive devices 21 and 21 that are moved up and down by a motor via a rope or a ball screw or the like are provided. The carry-in conveyor 6 of the step-down unit 1 and the carry-out conveyor 8 of the stacking unit 2 are each composed of a chain conveyor, and the chain path so that the lift arms 22 and 23 of the lift platform devices 7 and 9 can sink. Is provided with a recessed path portion (not shown) that sinks downward in a U-shape.
[0011]
As shown in FIGS. 2 and 3, the carriage 5 has a plurality of carriage rollers 10 attached between a pair of carriage side frames 5 a, 5 a. A rail 4 provided on the upper frame member 3a of the book is installed so as to freely advance and retract via a travel guide 24 such as a linear motion bearing or a wheel. The main body frame 3 is provided with a rack 25 along each rail 4. A self-propelled traveling device 28 including a pair of pinions 26 (FIG. 2) meshing with the rack 25 and a motor 27 with a speed reducer is provided as a carriage. It is mounted on the side frame 5a. The pinions 26 and 26 on both sides are connected to each other by a rotating shaft 26a.
[0012]
Of the carriage rollers 10 of the carriage 5, the first two carriage rollers 10 </ b> A on the step-down unit 1 side are driving carriage rollers that are rotationally driven by a carriage roller driving device 29 mounted on the carriage 5. A plate-like chute 30 whose upper surface is inclined downward is attached to the rear end side of the carriage roller 10 so as to extend between the two carriage side frames 5a and 5a. As shown in FIG. 3B, each non-driven carriage roller 10 is formed by applying a resin coating 10b to the surface of a metal roller body 10a made of iron or the like. For the resin coating 10b, a stretchable resin tube such as vinyl chloride is used. After covering the roller body 10a, it is contracted by heating or the like, and is attached to the roller body 10a. The chute 30 is formed with a coating layer of a fluororesin such as a tetrafluoroethylene resin as a resin coating only on the entire upper surface or on the entire surface. In addition, except for the driving carriage roller 10A, the carriage 5 desirably covers all the portions that may come into contact with the bottom surface of the luggage W, for example, the top surface and the inner surface of the cart side frame 5a with a resin coating. The driving carriage roller 10A is made of a metal such as iron, and has a non-slip coating such as silicon rubber on the surface thereof. This coating is also attached as a stretchable tube by heat shrinkage or the like. In the illustrated example, the coating of the driving carriage roller 10A is divided into a plurality in the longitudinal direction.
[0013]
The carriage roller driving device 29 includes a bearing portion 29A and a driving portion 29B as shown in FIGS. The bearing portion 29A is configured such that a bearing 31 is attached to a roller shaft 10c protruding from an end portion of each drive carriage roller 10A, and these bearings 31 are accommodated in a common bearing box 32 through which both roller shafts 10c pass. The bearing box 32 is installed on a mounting base 33 provided on the cart side frame 5a, and is divided into two vertically by a horizontal dividing surface, and a fitting recess 34 of the bearing 31 is provided on the dividing surface. . The bearing box 32 can be opened and closed up and down around the support shaft 35, and a stopper 36 provided at the front end of the lower divided bearing box so as to be able to be turned up and down is engaged with a recess at the front end of the upper divided bearing box. By being combined and tightened with the screw portion of the stopper 36, the closed state is maintained. In addition, the code | symbol 5c of the figure shows the connection material which connects between the cart side frames 5a of both sides.
The drive portion 29B of the carriage roller drive device 29 is provided with a gear 37 at the tip portion protruding from the bearing box 32 of each roller shaft 10c, and these gears 37 are meshed with a common drive transmission gear 38 from above. . The drive transmission gear 38 is rotatably supported by the mounting base 33 and meshes with the output gear 40 of the drive source 39 obliquely downward. The drive source 39 is composed of a motor 41 provided with a speed reducer 42. The speed reducer 42 has an output shaft orthogonal to the motor shaft.
[0014]
FIG. 4 shows the scooping alignment device 11 and the clamping device 12 in the step-down part 1. When scooping, the upper stopper 13 of the alignment device 11 and the lower stopper 15 of the clamp device 12 can be moved forward and backward by a guide member 46, 47 such as a slide bearing via a plurality of guide rods 44, 45 protruding rearward. It is supported and driven forward and backward by forward and backward drive devices 48 and 49 such as cylinders. The guide members 46 and 47 and the advance / retreat drive devices 48 and 49 are installed on the installation base 43 of the main body frame 3 via an appropriate base.
[0015]
The shutter 14 is attached to a lower end of a vertical shaft 52 that is supported by a forward / backward member 50 via a guide member 51 such as a slide bearing so as to be movable up and down, and is moved up and down by a shutter opening / closing device 53. The advance / retreat member 50 is installed on a shutter support frame 60 installed on the main body frame 3 through a guide member 55 such as a guide rod 54 and a slide bearing, and is advanced / retreated by a shutter advance / retreat device 56 such as a cylinder. The
[0016]
The stopper 16 on the carriage entry side of the clamping device 12 is divided into a plurality of unit stoppers 16a to 16c arranged in a direction orthogonal to the carriage traveling direction, and a unit stopper advance / retreat apparatus that advances and retracts each unit stopper 16a to 16c individually. 57 is provided. Each of the unit stoppers 16a to 16c has a plurality of guide rods 58 projecting from the back surface, and is supported by the guide rods 58 and a guide member 59 such as a slide bearing so as to freely advance and retract. The unit stopper advancing / retreating device 57 comprises a cylinder and is disposed between the guide rods 58 on both sides. The unit stopper advancing / retreating device 57 and the guide member 59 are installed on the main body frame 3. Each unit stopper advancing / retreating device 57 is a rod-like member extending in the arrangement direction, and a cushion member is attached to the load contact surface.
[0017]
The shutter 18 of the stacking section 2 in FIG. 1 is moved up and down by the shutter opening / closing device 61 and moved back and forth by the shutter advance / retreat apparatus 62, similarly to the shutter 14 on the stepped-down section side in FIG. 4. Further, the stopper 17 of the stacking portion 2 is advanced and retracted by a stopper advancing / retracting device 63 made of a cylinder or the like.
[0018]
The operation of the above configuration will be described. The load W on the pallet P1 on the stepped-down portion 1 side in FIG. 1 is, for example, a cardboard box containing canned drinks, and the load W is placed on a conveyor (not shown) following the conveyor 6 according to type. A plurality of pallets P1 are sequentially placed on standby. The layers of the stacked packages W are bonded to each other with a hot-melt adhesive (not shown) so as not to collapse when transported. The pallet P2 on the stacking unit 2 side is a pallet prepared for each shipping destination.
[0019]
As shown in FIG. 6 (A), when the pallet P1 in the stacked state is transported to the predetermined position of the step-down unit 1 by the carry-in conveyor 6, the carry-in conveyor 6 is stopped and the lifting platform device 7 is raised. The pallet P1 of the carry-in conveyor 6 is lifted. When the uppermost load W reaches the height of the carriage 5 as indicated by the chain line, the lifting of the lifting platform device 7 stops. After this stop, as shown in FIG. 6B, the upper stopper 13 of the alignment device 11 and the lower stopper 15 of the clamping device 12 move forward to a predetermined position where they contact the load W, and the shutter 14 is lowered to the closed position. While moving forward, the stopper 16 on the pusher side of the clamping device 12 moves forward. Accordingly, the uppermost load W is sandwiched between the upper stopper 13 and the shutter 14, and the second load W from the top is sandwiched between the lower stopper 15 and the pusher stopper 16 of the clamp device 12.
[0020]
In such a clamped state, the carriage 5 waiting on the stacking portion 2 side travels to the step-down portion 1 side while rotationally driving the leading drive carriage roller 10A upward. When the driving carriage roller 10A hits the side surface of the uppermost load W, the load W is picked up by the frictional force generated by the rotation, and is placed on the carriage 5 as the carriage 5 travels (FIG. 6C). . Since the uppermost package W is sandwiched between the aligning devices 11 when scooping, it is not pushed away by the carriage 5 and does not collapse.
At the time of scooping up, the adhesive bonding the layers of the luggage W is peeled off and rubbed against each carriage roller 10 and each part of the carriage 5, but the carriage roller 10 and the chute 30 are made of resin coating 10 b or fluorine resin. Since it is covered with the coating layer, it is possible to prevent the adhesive from adhering to the carriage roller 10 or the like due to the property of the resin. Therefore, the frequency of cleaning and replacement of the carriage roller 10 and the chute 30 can be reduced.
[0021]
In addition, when the luggage W is picked up by the carriage 5, the second-stage luggage W, which is the lower layer of the scooping layer, is sandwiched between the clamping devices 12, so that the load does not collapse. Further, the position and posture of the second-stage baggage W are scattered and the entry of the carriage 5 is prevented, and smooth scooping is performed.
Since the stopper 16 on the pusher side of the clamp device 12 is divided into a plurality of parts, even when there is a gap d between some rows of packages W as shown in FIG. ), The load W is clamped for each row by the respective division stoppers 16a to 16c, and is clamped without any gap. Therefore, reliable clamping can be performed, and smooth loading of the luggage W by the carriage 5 can be performed. Further, not only when there is a gap between the packages W, but also when the lengths of the columns of the packages W are different, by pressing the packages W for each column with the respective division stoppers 16a to 16c, Secure clamping is possible.
[0022]
After the load W is picked up on the carriage 5 in this way, as shown in FIG. 7A, the upper stopper 13 of the alignment device 11 is retracted and the shutter 14 is retracted and opened to the upper position as shown in FIG. The table 5 runs backward to the stacking unit 2 side. Further, the lower stopper 15 and the pusher side stopper 16 of the clamping device 12 are retracted to release the clamp, and prepare for the next lifting of the load W.
When the carriage 5 travels to a predetermined position of the stacking section 2, after the traveling stops, the load W on the carriage 5 is sandwiched between the shutter 18 and the stopper 17 of the drop-off alignment device 19 (FIG. 7B). In this state, when the carriage 5 passes under the shutter 18 and travels to the stepped-down portion 1 side, the load W on the carriage 5 is stopped by the stopper 17 and is dropped onto the pallet P2.
While the carriage 5 is positioned in the stacking portion 2, the lifting platform device 7 is raised by one stage of the load W in the lowering portion 1, and the scooping alignment device 11 and the clamping device 12 in the same manner as described above. Stand by with the luggage W in between. Therefore, when the carriage 5 travels to the stepped-down portion 1 side for paying off the luggage W, the traveling W is continued as it is, so that the next stage of the luggage W of the stepped-down section 1 becomes the carriage. 5 (FIG. 7C).
[0023]
In this way, the carriage 5 is reciprocated to take out the desired number of loads W on the pallet P1 of the lowering unit 1 and stack them on the pallet P2 of the stacking unit 2. The excess load W in the lowering section 1 is lowered together with the pallet P1 from the lifting platform device 7 onto the carry-in conveyor 6 and carried out from the subsequent conveyor (not shown).
[0024]
When the anti-slip coating of the drive carriage roller 10A of the carriage 5 is worn or damaged during operation, the bearing box 32 is opened as shown in FIG. 9A, and the drive carriage roller 10A and the bearing 31 together with the bearing box 32 are opened. Remove from. In this removed state, the anti-slip coating is replaced, or the drive carriage roller 10A and the bearing 31 are replaced with new ones. The replaced drive carriage roller 10A fits the bearing 31 into the bearing box 32, closes the bearing box 32, and tightens it with the stopper 36 (FIG. 9B).
When the drive carriage roller 10A is replaced in this way, power is transmitted to the drive carriage roller 10A by the gear 37, and the gear 37 is engaged with the drive transmission gear 38 from above, so that the drive carriage roller 10A is lifted. Alternatively, the drive transmission system can be disconnected or reconnected at the same time by simply lowering. Therefore, the replacement operation of the drive carriage roller 10A is simplified as compared with the conventional case where the drive is transmitted to the drive carriage roller using a chain. Therefore, the operation rate of the load processing apparatus is improved, and even when the anti-slip coating of the drive carriage roller 10A is suddenly broken during operation, the drive carriage roller 10A is immediately replaced to minimize line stagnation. Can be suppressed.
[0025]
In the above-described embodiment, the drive transmission gear 38 meshes with the output gear of the drive source 39. However, the drive transmission gear 38 may be an output gear of the drive source 39. Moreover, in the said embodiment, although the stacking part 2 used the raising / lowering platform apparatus 9 as a loading platform and stacked on the pallet P2, a loading platform may be a conveyor, a trolley | bogie, etc.
[0026]
【The invention's effect】
Since the carriage roller driving device of the load processing apparatus according to the present invention is configured so that the gear of the roller shaft meshes with the driving transmission gear from above, the driving carriage roller can be replaced without requiring the engagement / disengagement of the driving transmission system. The replacement work can be done easily and quickly.
Even when two drive carriage rollers are provided, the drive shafts of both drive carriage rollers can be engaged with the drive transmission gears from above to provide a drive transmission system with a simple configuration, and the drive carriage rollers can be replaced. Easy to do. In addition, since the bearings of the roller shafts of both drive carriage rollers are accommodated in a common bearing box that can be opened and closed vertically, the two drive carriage rollers can be attached and detached simultaneously. By combining this configuration with a configuration in which the gear of the drive roller shaft is engaged with the drive transmission gear from above, a carriage roller drive device with a simple configuration and a very simple replacement of the drive carriage roller can be realized.
[Brief description of the drawings]
FIG. 1 is an overall front view of a load processing apparatus including a carriage roller driving device according to an embodiment of the present invention.
FIG. 2 is a plan view of the cargo handling apparatus.
FIG. 3A is a perspective view showing a carriage and a traveling guide system of the cargo handling apparatus, and FIG. 3B is a partially enlarged perspective view of the carriage roller.
4A is a perspective view showing a clamp device and each stopper of the load processing device, and FIG. 4B is a plan view showing a split stopper of the clamp device and its peripheral portion.
5A is a plan view showing a carriage roller driving device of the load processing apparatus, FIG. 5B is a side view of the same portion, and FIG. 5C is a cutaway side view of the same portion.
FIG. 6 is an operation explanatory diagram of the load processing apparatus.
FIG. 7 is an explanatory diagram of the operation of the load processing apparatus following FIG.
FIG. 8 is an operation explanatory view of a clamp device in the same load processing apparatus.
9A is an enlarged perspective view showing a bearing box open state of the carriage roller driving device, and FIG. 9B is a partial perspective view showing the bearing box closed state.
FIG. 10 is a perspective view of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Lowering part, 2 ... Stacking part, 3 ... Main body frame, 5 ... Reciprocating base, 5a ... Carriage side frame, 7 ... Elevating base apparatus, 9 ... Elevating base apparatus (loading base), 10 ... Carriage roller DESCRIPTION OF SYMBOLS 10A ... Drive carriage roller, 29 ... Carriage roller drive device, 29A ... Bearing part, 29B ... Drive part, 31 ... Bearing, 32 ... Bearing box, 34 ... Fitting recessed part, 35 ... Support shaft, 36 ... Stopper, 37 ... Gear, 38 ... Gear for drive transmission, 39 ... Drive source, 40 ... Output gear, 41 ... Motor, 42 ... Speed reducer, P1, P2 ... Pallet, W ... Luggage

Claims (2)

A stepped-down unit having a lifting platform device for loading the cargo in a stacked state, a stepped-up unit having a loading table arranged in parallel with the stepped-up unit, and a plurality of carriage rollers between a pair of cart side frames And a reciprocating platform capable of reciprocating between the upper and lower platform devices of the lowering unit and the loading unit of the stacking unit. A carriage roller driving device that rotationally drives one or more carriage rollers from the top in the direction of picking up a load, and is provided with a bearing that supports a roller shaft protruding from an end of the driving carriage roller, and this bearing can be attached and detached. the openable bearing box provided above and below to be accommodated in the gear provided on the roller shaft, the gear, meshed from above to the drive transmitting gear connected to the driving source, wherein the bearing housing has opening and closing of the upper and lower The lower part of the dividing plane to be performed is in front Has a fitting recess in the divided surface, Placing the bearing into the fitting recess, the carriage of the load processing unit, characterized that you gear of the roller shaft is adapted to mesh with the power transmission gear Roller drive device. There are two carriage rollers that are driven to rotate, bearings that support the roller shafts of these carriage rollers are housed in a common bearing box, gears are provided on the two roller shafts, and one drive transmission gear is provided. The carriage roller driving device of the load processing device according to claim 1, wherein the carriage roller is engaged with gears of the two roller shafts.

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