JPS61263517A - Method and device for loading of plates - Google Patents

Abstract

PURPOSE:To enhance efficiency of loading of tire treads for car on a booking truck by allowing a loading conveyor to retract and run at the same time and same speed from the loading position for the booking truck, and by lifting one step after said retraction. CONSTITUTION:Treads 44 are transferred onto a loading conveyor 13 via a feed-in conveyor 89, a No.2 conveyor 56 and a No.1 conveyor 55. An empty rack 45 of a booking truck 11 is lowered to horizontal position, and the loading conveyor 13 is lifted for a level difference corresponding to one step of said rack 45 by a table lifter 46 of said conveyor 13. Then the conveyor 13 is advanced to the loading position for said booking truck 11. Then this conveyor 13 is driven and retracted at the same speed to cause transfer therefrom onto said rack 45. Then the conveyor 13 is lifted one pitch up, and the subsequent empty rack 45 is put into horizontal position to follow the procedure repeatedly. This constitution should assure enhancement of the efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is a method for automatically loading sheet materials, especially treads for automobile tires, onto a book truck equipped with a large number of swingable shelves using a conveyor. This invention relates to improvements in methods and apparatus.

(Prior art) In the conventional tread loading method, the loading height of the loading conveyor is fixed to the base frame at a fixed position, and the book cart is moved intermittently by one pitch with the height of one shelf level being one pitch using a lifting device. Treads are loaded into each column by lowering them one by one into the pit so that each shelf surface matches the loading height of the loading conveyor, and when all the shelves have been loaded, the book cart is lifted from the lowering limit position of the pit by the lifting device. After returning to the floor level, the empty cart is moved to a discharge conveyor, and then the empty cart is carried in and placed on the lifting device on the floor.

(Problems to be Solved by the Present Invention) Due to the above-described configuration in the prior art, in order to move a fully loaded book truck toward the discharge conveyor, the book truck that has descended into the pit must be raised back up to the floor level. Therefore, there is a problem in that it takes an extra time to replace the trolleys, resulting in poor efficiency.The present invention aims to solve this problem.

(Means for Solving the Problems) In order to solve the above problems, the method of the present invention includes the steps of: placing a book cart equipped with a large number of swingable shelves on the floor;
The loading conveyor carrying the plate-shaped material is advanced to the loading position of the book truck, and then, when retreating away from the loading position, the conveyor is rotated at approximately the same speed as the retreating speed, and the plate-shaped material is loaded into the book. It is characterized by the steps of loading onto the shelf of a trolley, and the step of raising the loading conveyor step by step each time each shelf is loaded to match the loading height to the shelf surface height. Further, the device of the present invention includes a loading conveyor rotatably supported by a moving frame, and the conveyor loads the plate-shaped material and advances to the loading position of the book cart, and then retreats in a direction away from the loading position. In this loading device, the conveyor rotates at almost the same speed as the backward speed of the conveyor to load the plate-like material onto the book truck, and the loading conveyor is raised and lowered by an elevating device such that its loading height is adjusted to the height of the book truck. It is characterized by being adjustable with respect to the shelf surface.

(Function) The loading conveyor is intermittently raised one pitch at a time with respect to the book cart placed on the floor, and the loading height is adjusted so that it is slightly above the horizontal empty shelf surface. Platy materials are loaded one after another into the columns, and when all shelves have been loaded, the fully loaded book cart is immediately moved on the floor toward the discharge conveyor, and at the same time, the empty book cart is replaced and carried in for loading. placed in place.

(Example) The present invention will be described in detail below with reference to the drawings by way of an example of a tire tread.

1 and 2, a loading device according to the invention is designated by the reference numeral 10.

Note that 11 is a book truck, and 12 is a tread conveyor device.

The loading conveyor 13 has a large number of conveyor chains 14 arranged in parallel at intervals as shown in FIGS. 2 and 3, and each conveyor chain 14 has a first
As shown in the figure, the guide sprocket wheels 16 to 21 are attached to the arm 15 (port in Figure 1), and as shown in Figures 3 and 4, the main sprocket wheel 23 is attached to the rotating shaft 22. It is set up on.

Each arm 15 is supported in a cantilever manner by the moving frame 24, and the rotating shaft 22 is rotatably supported by a side plate 25 (see FIG. 1) of the moving frame 24. The movable frame 24 is mounted on rails 27 (Fig. 4) fixed to the lifting base frame 26 so as to be movable forward and backward by wheels 28 to 31, and is further mounted on guide sprocket wheels 32 and 33 as shown in Fig. 1. set chain 34
The chain 34 is operated by a geared motor 35 fixed to the lifting base frame 26.
The forward rotation causes the loading conveyor 13 to move forward toward the loading position A of the book cart 11 placed on the floor, and the reverse rotation causes the loading conveyor 13 to move backward away from the loading position A.

As shown in FIGS. 3 and 4, a sprocket wheel 37 is attached to at least one side of the rotating shaft 22 of the loading conveyor 13 via an electromagnetic clutch 36.
A chain 42 is stretched between the sprocket wheel 37 and the guide sprocket wheels 38 to 41, and as shown in FIG. 1, the chain 42 is constantly operated by a motor 43 fixed to the lifting base frame 26. conveyor 1
3 carries the tread 44 and moves forward, the clutch 36
is cut and the rotation of the motor 43 is caused by the rotation shaft 2 of the conveyor 13.
Since the conveyor chain 14 remains inactive, the loaded tread 44 is fed to the loading position A. Next, when the loading conveyor 13 retreats in a direction away from the loading position A, the clutch 3
6 are connected, the rotation of the motor 43 is transmitted to the rotating shaft 22, and the conveyor chain 14 operates in one direction (counterclockwise). At this time, the two motors 35 and 43 are rotated at the same speed, and the sprocket wheel 37 and the sprocket wheel 23 have the same pin diameter, so the conveyor chain 14 moves at the same speed as the backward speed of the conveyor 13. The trend 44 is activated at the shelf 45 at the loading position A.
The objects are automatically loaded one after another without being subjected to any undesirable external forces. Alternatively, a known cam clutch (for example, PB-8 type manufactured by Tsubakimoto Chain Co., Ltd.) may be used, and when the conveyor 13 moves backward, the motor 43 is not operated, and therefore the chain 42 is in a fixed state. The conveyor chain 14 may be operated in a counterclockwise direction by engaging the cam clutch.

In addition, in another embodiment, the loading conveyor is
As described in Japanese Patent No. 591, a conveyor belt is supported by a support roller, and a pinion having a pin diameter that is the same as the diameter of the support roller is attached to one side of the support roller via a clutch, A rack may be engaged with the pinion, and a moving frame rotatably supporting the belt and the pinion may be moved forward and backward by a cylinder.

In the present invention, as shown in FIG. 1, the loading height H of the loading conveyor 13 can be arbitrarily adjusted using a lifting device 46. That is, the lifting base frame 26 of the loading conveyor 13 is mounted and fixed on a table lifter 46 disposed in a pit 47 provided adjacent to the loading place where the book cart 11 is placed. As shown in FIG. 2, it can be raised and lowered by being guided by guide bosses (49, 50) erected at the base 48 in the pit 47 on both sides of the lift base frame 26. In addition, in the figure, 51 to 54 are wheels supported by the lifting base frame 26 and engaged with the guide post 49.

The table lifter 46 connects the pantograph type link 105 with the screw screw 106 as shown in FIGS.
108 is a moving frame connected to a shaft 109, 110 is a bearing unit that supports the screw 106, 111 is a coupling, and 112 is a wheel attached to the shaft 109. be. Note that the link 105 may be operated by a hydraulic cylinder. Loading conveyor 13 is tray
Every time the table 44 is loaded onto the shelf 45 of the book cart 11, a detection device (not shown) detects this, and the table lifter 46
is raised one pitch at a time, with the height of one shelf level being one pitch, and the loading height H of the loading conveyor 13 is adjusted so that it is located slightly above the shelf surface of the next empty shelf 45 that has been lowered into a horizontal state. Ru. For example, as shown in FIG. 1(E), when the empty shelf 45 is lowered to a horizontal position by a shelf lowering device (not shown), the shelf retainer 113 pivotally supported by the lifting base frame 26 is swung by the cylinder 114. When the empty shelf 45 is pressed down, the motor 107 of the table lifter 46 is driven to rotate the screw 106, and the table lifter 46 starts to rise. If the table lifter 46 is stopped from rising as detected by the angle detection device connected to the table lifter 46, it means that the loading conveyor has risen by one pitch, which is the height of one shelf.

As described above, the loading conveyor 13 of the present invention changes the loading height H in stages according to changes in the shelf height of the book cart 11, so the trends 44 aligned on the loading conveyor 13 are The carrying-in conveyor device to be carried in must have at least a standby conveyor in contact with the loading conveyor 13 to follow the vertical movement of the loading conveyor 13. That is, as shown in FIGS. 1 and 2, one end of the first standby conveyor 55 and the second standby conveyor 56 is pivotally supported by a fixed base 57, and the other end is connected to the lifting base frame 26 via wheels 58. The hook is swingably supported by a swing frame 60 extending over the beam 59. Note that the swing frame 60 is
As shown in the figure, it is designed to swing within a range of ±α'=10' or within a total of 20e from the horizontal position. The first standby conveyor 55 has a large number of conveyor chains 61, and the chains 61 are stretched between guide sprocket wheels 63 to 65 attached to an arm 62 and a sprocket wheel 67 rotatably attached to a fixed shaft 66. 68 and each arm 62 . A fixed shaft 66 and a motor 68 are supported by the swing frame 60. In addition, both 69 and 70 in FIG. 1 are drive shafts.

The second standby conveyor 56 has a large number of conveyor chains 71, which are arranged in parallel so that one end is located between the ends of the conveyor chains 61, and guide sprockets 73, 74 attached to an arm 72. and a sprocket wheel 75 rotatably attached to a fixed shaft 66 and a sprocket wheel 77 attached to a drive shaft 76 and are operated by a motor 78.
．． The fixed shaft 76 and the motor 78 are supported by the swing frame 60.

The branch conveyor 79 has a large number of conveyor chains 80, and the chains 80 are stretched around guide sprocket wheels 82 to 85 attached to a floating frame 81 and are operated by a motor 87, and the floating frame 81 is connected to a fixed base. Operated by an elevating mechanism supported by the table 57, for example, an eccentric cam type elevating mechanism 88, one of the chains 80 rises from a standby position slightly lower than a drive roller 90 of a feed conveyor 89, which will be described later, using the drive shaft 76 as a fulcrum. It looks like this.

The feed conveyor 89 has a large number of drive rollers 90, whose rotation axes are supported by the base 57, are arranged in parallel between the conveyor chains 80, and are connected to a drive source (not shown). It is driven by a chain (not shown). A plurality of trends 44 arranged in groups on an alignment conveyor (not shown) are sequentially fed into the feeding conveyor 89 in the direction of the arrow.

As shown in FIG. 1, the book cart 11 has a known structure in which a large number of shelves 45 are supported so as to be swingable between an inclined position and a horizontal position, and 91 is a base portion, and 92 and 93 are side wheels. ,9
4 is a central wheel with rails 95 to 97 provided on the floor respectively.
The puncher 101 attached to the chain 100 is rotated by the rotation of the conveyor chain 100 which is placed on top of the conveyor chain 100 and rotatably supported by a fixed base 99 provided in the pit 98.
102 hits the brackets 103 and 104 of the base portion 91, and the cart 11 is transferred toward a discharge conveyor (not shown). The shelves 45 of the book cart 11 are automatically lowered from an inclined position to a horizontal position by a shelf lowering device (not shown). Although this embodiment specifically describes a tire tread, the present invention is of course applicable to all plate materials other than tire trends.

The loading method of the present invention and the operation of the device 0 will be explained below.

The treads 44, which are arranged in sets of four and have been transferred onto the feed conveyor 89 from other conveyor groups (not shown) of the carry-in conveyor device 12, flow over drive rollers 90 driven by a motor (not shown) and are transferred onto the feed conveyor 89. When it reaches the other end, it darkens the photocell and stops. At the same time, the elevating mechanism 88 of the branch conveyor 79 operates, and the branch conveyor 7
9 floats up, and the tread 44 is connected to the branch conveyor 79.
The transfer direction is changed by 90°. At the same time, the motor 87 operates to rotate the branch conveyor 79, and the motor 78 operates to rotate the second standby conveyor 56, so that the tread 44 is transferred to the second standby conveyor 56, and the phototube is darkened and stopped.

When it is confirmed by a detection device (not shown) that the tread 44 is not on the first mechanical conveyor 55, the second standby conveyor 56 resumes rotation, the motor 68 is activated, the first standby conveyor 55 is also rotated, and the tread 44 is removed. It moves onto the first standby conveyor 54, darkens the phototube, and stops. When the absence of the tread 44 on the loading conveyor 13 is confirmed by a detection device (not shown), the rotation of the first standby conveyor 55 is restarted, and the clutch 36 of the loading conveyor 13 is connected, and the rotation of the motor 43 is transferred to the rotating shaft 22 of the conveyor chain 14. conveyed to loading conveyor 1
3 rotates in the transfer direction, and the tread 44 is transferred onto the loading conveyor 13, and when it reaches the other end of the conveyor 13, it darkens the phototube and stops. At the same time, when a shelf unloading device (not shown) is activated and the empty shelf 45 of the book cart 11 is automatically lowered from the inclined position to the horizontal position, the table lifter 46 of the loading conveyor 13 is activated and the shelf 45 is lifted one step higher. The conveyor 13 rises by one pitch and then stops, and its loading height H is located slightly above the surface of the shelf 45 in the horizontal position.

Due to the operation of the motor 35, the loading conveyor 13 carries the tread 44 and starts moving forward toward the loading position A of the book cart 11, and at the same time, the clutch 36 is disengaged and the rotation of the motor 43 is transmitted to the rotating shaft 22 of the conveyor chain 14. Therefore, the loading conveyor 13 does not rotate, and the trend 44 is fed to the loading position on the horizontal shelf 45 of the book cart 11, and the phototube is darkened and stopped. At the same time, the loading conveyor 13 starts to move backward away from the loading position due to the reverse rotation of the motor 35, and at the same time, the clutch 36 is engaged and the rotation of the motor 43 is transmitted to the rotating shaft 22 of the conveyor chain 14, and the conveyor chain 14 Rotating at the same speed as the retraction speed of the conveyor 13, the trends 44 on the conveyor 13 are automatically stacked one after another on the shelf 45 in an aligned state. Loading conveyor 1
3 has returned to the standby position, the table lifter 46 is actuated by the rotation of a screw (not shown), and the loading conveyor 13 is raised by one pitch (height of one shelf), and at the same time When the non-shelf unloading device operates and unloads the next empty shelf 45 from the inclined standby position to the horizontal loading position, the loading conveyor 13 repeats the above loading operation and loads the next tread 44. When the loading of all types is completed in this way, the conveyor chain 100 under the floor of the book truck 11 is activated, and the pushers 101 and 102 push the fully loaded book truck 11 automatically toward the discharge conveyor (not shown). discharged,
Instead, when the empty truck 11 with all the seeds held in the inclined position is carried in, the table lifter 46 is operated and the loading conveyor 13 is lowered to the lower limit in the pit 47 and stopped. At the same time, the shelf unloading device operates to take down the first empty shelf 45 to a horizontal position, and the loading conveyor 13 performs the above-mentioned loading operation.

(Effects) As described above, the present invention enables the loading conveyor to be raised and lowered relative to the book cart placed on the floor, and the loading height of the loading conveyor is raised in stages and intermittently, thereby changing the shelf height. Since the book truck is adjusted accordingly, the fully loaded book truck can be immediately removed from the loading area when all types have been loaded, greatly reducing the time required to replace the book truck compared to the conventional method. As a result, it is possible to reduce the number of conveyors for accumulating plate-shaped materials within the conveyor device, contributing to the downsizing of the equipment.

[Brief explanation of the drawing]

Figure 1 (a) is a front view showing the loading device and part of the loading conveyor device of the present invention, Figure 1 (b) is a front view of the arm of the loading conveyor, and Figure 1 (c) is the loading conveyor. Figure 1 (d) is a partial plan view of the operating mechanism of the link of the table lifter, Figure 1 (e) is a front view of the blank holder of the trolley, and Figure 2 is the device shown in Figure 1. Figure 3 is a partial plan view of the loading conveyor, and Figure 4 is a partial side view of the loading conveyor. 10...Loading device, 11...Book trolley, 12
... Part of the loading conveyor device, 13... Loading conveyor, 24... Moving frame, 26... Elevating base frame, A... Loading position, 44... Plate material (tread), 45... Shelf, 46
・・Lifting device (table lifter), H・・Loading height, 49° 50・・Guide post, 55.56・・Waiting conveyor, 57・・Fixed base, 59・・Beam, 60・・
Swinging frame, 79... Branch conveyor, 81... Floating frame, 87... Feeding conveyor, 96... Fixed base, 97...
・Conveyor chain for book cart, α... Swing angle of swing frame. Patent applicant: Sumitomo Rubber Industries, Ltd. Oats Tire Co., Ltd. Tsubakimoto Kogyo Co., Ltd. Figure 3 Sword Figure 4

Claims (2)

[Claims] (1) placing a book trolley equipped with a number of swingable shelves on the floor, advancing a loading conveyor carrying sheet materials to the loading position of the book trolley, and then moving away from the loading position; loading the sheet materials onto the shelves of the book cart by rotating the conveyor at approximately the same speed as the reversing speed when reversing in the direction; and raising the loading conveyor in stages each time each shelf is loaded. A method for loading plate-shaped materials, comprising the steps of: adjusting the loading height to the height of a shelf surface; (2) A loading conveyor rotatably supported by a moving frame is provided, and when the conveyor loads the plate material and advances to the loading position of the book cart, then retreats in a direction away from the loading position. The loading device is configured such that the conveyor rotates at approximately the same speed as the conveyor and loads the plate-like material onto the book truck, and the loading conveyor has an elevating device that allows the loading height to be adjusted relative to the shelf surface of the book truck. A loading device for plate material, characterized in that it is adjustable.