JPS6216660Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an automatic weighing conveyor device.

Conventionally, spring-type scales, pendulum-type scales, etc. have been used in the weighing section of automatic labeling systems with weight values, but with these scales, the amount of mechanical displacement when empty and under heavy load is Due to their large size, when weighing on a weighing conveyor using these scales, the conveyor section corresponding to the weighing tray must be stopped before weighing, making it impossible to speed up the weighing and pasting process. It is something. That is,
When weighing an item, the weighing conveyor is stopped and weighed when the item is placed on the weighing conveyor, and after the weighing is completed, the conveyor belt is driven to transfer the weighed item to the pasting conveyor.

Therefore, it would be convenient if the items could be weighed while being conveyed on a weighing conveyor, as this would speed up the weighing and pasting process. In this case, the weighing conveyor, the roller that supports and conveys the weighing conveyor, the motor that rotates the roller, the conveyor frame that supports the roller and motor, etc. are integrated into a weighing conveyor section corresponding to a loading tray, and this weighing conveyor The part is attached to a measuring mechanism such as a load cell. by the way,
These weighing conveyor sections and weighing mechanisms must always be kept in a horizontal state. Also,
Since repairs and adjustments are often required, it is desired that these can be easily attached and detached from the frame. However, since it constitutes a measuring section, it must be firmly positioned during use.

This idea was developed in view of these points, and the height of the support part can be freely adjusted so that the weighing part, which is made by integrating the weighing conveyor part and the electric resistance wire weighing mechanism, can be maintained horizontally. can be done,
Another object of the present invention is to provide an automatic weighing conveyor device in which the weighing section can be mounted in a positioned manner with respect to the frame and can be easily attached and detached in the event of repair or the like.

This invention consists of a weighing conveyor located between the carry-in conveyor and the pasting conveyor, a drive roller that rotates to move the weighing conveyor and supports one end of the weighing conveyor, and a motor that rotates the drive roller. A weighing conveyor section consisting of is attached to an electrical resistance wire weighing mechanism fixed to a base plate so as to weigh the goods while conveying them.
The present invention is characterized in that adjusting legs are provided which can adjust the height while receiving the four corners of the base plate, and a recessed portion for receiving the lower end of the adjusting legs is formed in a frame supporting the adjusting legs. Therefore, by supporting the base plate with the adjusting legs, the measuring section can be made horizontal by adjusting the adjusting legs.
In addition, by forming recesses in the frame corresponding to the adjustment legs, the metering section can be mounted in a positioned position relative to the frame, and it can be easily attached and detached for repairs, etc. be.

An embodiment of this invention will be described based on the drawings. First, Fig. 1 shows the external appearance of an automatic weighing label pasting system, in which a carry-in conveyor 1 is provided to receive items packaged by a packaging machine (not shown), and a predetermined gap is maintained by this carry-in conveyor 1. A weighing conveyor 2 is provided, onto which items are fed. Here, the conveyance speed of the loading conveyor 1 is
V ₁ , and if the conveyance speed of weighing conveyor 2 is V ₂ , then V ₁
< V ₂ , and even when items are conveyed in close contact on the carry-in conveyor 1, the difference between the conveyance speeds V ₁ and V ₂ is used to separate the items that are in close contact with each other. Only one piece is placed on the weighing conveyor 2. In this case, when an article is being weighed while being conveyed on the weighing conveyor 2, the operation of the carry-in conveyor 1 is controlled and stopped, so that the next article is not conveyed onto the weighing conveyor 2. Further, a pasting conveyor 3 is provided on the downstream side of this weighing conveyor 2, and the tip position of the item transferred to this pasting conveyor 3 is detected by a detector (not shown) of the pasting conveyor 3. It is. Further, the conveying speed V ₃ of the pasting conveyor 3 is constant, and in this embodiment is the same as the conveying speed V ₂ of the weighing conveyor 2. When the tip position of the item is detected by the detector, a timer operates, and on the other hand, the label 5 printed by the printer section 4 is printed at the lower end of the pasting section 6 based on the weighing data output from the weighing conveyor section, which will be described later. is sent out and held in a suction state. When the item is conveyed by the affixing conveyor 3 and reaches the position set by the timer, the affixing unit 6 performs an affixing operation, and the force of compressed air is used to place the label 5 on which the weighing data is printed on the item at a predetermined position. It is to be pasted. These operations are controlled by the control section 7. Further, the printer section 4 and the pasting section 6 are integrated, and are provided with a hydraulic jack 8 for holding the article at an appropriate height depending on the height of the article. and,
Adjustment legs 9 are provided so that the entire device can be installed horizontally on the floor, and a level 10 is also provided for checking the horizontal state of the measuring section.

Next, the configuration around the measuring section will be explained with reference to the drawings from FIG. 2 onwards. First, the weighing conveyor 2 is in the form of a seamless endless belt, and both ends thereof are supported by a driving roller 11 and a driven roller 12. This driving roller 11 and driven roller 12
is attached to frames 13 and 14 that are maintained at a constant width by stays (not shown), and the driven roller 12 side is long enough to apply appropriate tension to the weighing conveyor 2 and to prevent the weighing conveyor 2 from meandering. It can be freely adjusted using the hole 15 and the adjustment screw 16. Further, a support plate 17 is screwed between the frames 13 and 14 to prevent the weighing conveyor 2 from sagging. A motor 19, which is an induction motor, is attached to one frame 13 with respect to a motor frame 18, which is attached to the motor frame 18 such that its position can be freely adjusted. The output shaft 20 of the motor 19 is supported by a pulley block 21 mounted on the frame 13 so as to be adjustable in position, and is connected to the drive roller 11 via a two-stage reduction mechanism 22. That is, the timing pulley 23 and pulley block 2 provided on the output shaft 20
A large-diameter timing pulley 24 supported by a timing pulley 24 is connected by a timing belt 25 to achieve first-stage deceleration, and a small-diameter timing pulley 26 supported by a pulley block 21 and coaxial with the timing pulley 24 is connected to the drive by a timing belt 25. The roller 11 and a timing pulley 27 that rotate together are connected by a timing belt 28 to perform second-stage deceleration. In this way, these weighing conveyor 2, drive roller 11, frame 13,1
4, support plate 17, motor 19, two-stage reduction mechanism 22
etc. are integrated to form a weighing conveyor section 29, and this conveyor section 29 as a whole corresponds to a placing tray during weighing. Here, even if the frequency changes, if the conveying speed of the weighing conveyor 2 is not constant, the timing of the feeding, weighing, and pasting operations will be shifted and normal operations will not be performed.
A constant speed is set by changing the number of teeth of the timing pulley 27.

The conveyor section 29 is attached to an electrical resistance wire type measuring mechanism 30. That is, this electric resistance wire type measuring mechanism 30 has a load cell member 33 attached to a mounting portion 32 fixed to a base plate 31, and a part of the top of this load cell member 33 has an X-shaped plate. A receiving frame 34 is fixed by socket screws 35. Here, supporting metal fittings 36 are attached to each end of this pan support frame 34. This support fitting 36 is formed with a stepped portion 39 having a vertical surface 37 and a horizontal surface 38 to receive the frames 13 and 14, and this vertical surface 37 has a screw for fixing the frames 13 and 14 with screws 40. A hole (not shown) is formed. Further, this support metal fitting 36 is screwed from below to the pan support frame 34 with a screw (not shown),
A play hole (not shown) is formed in this screw so that the displacement can be adjusted in the width direction of the screw. In this way, the conveyor section 29 is supported at four locations by the electrical resistance wire type measuring mechanism 30. Furthermore, electronic circuit components in the measuring section are mounted on the base plate 31, and a cover 41 is fixed to cover the base plate 31. Here, this cover 41
A notch 42 is formed in a part of the notch 4.
2, the motor 19 and the electronic circuit components on the base plate 31 are connected by a Siegel wire 43 which is much softer than the cord used for normal wiring. Further, screw holes 44 are formed near the four corners of this base plate 31, and a screw portion 50 corresponding to the screw hole 44 is formed to form the weighing conveyor section 2.
Adjustable legs 45 are provided to keep the bar 9 horizontal and at a predetermined height. A hexagonal nut is attached to the threaded portion 50 of the adjustment leg 45, and the adjustment leg 45, once adjusted, can be fixed with a double nut to prevent it from turning easily. Further, a large-diameter metal ring 46 that is rotated when adjusting the height is integrally formed on the lower end side of this adjustment leg 45, and a shaft portion of this metal ring 46 that protrudes toward the inner lower side is provided with this metal ring 46. A rubber member 52 is attached by a retaining ring 53 while protruding downward from the metal ring 46 via a metal spacer 51 that makes the rotation of the ring 46 smooth.

A frame body 47 for the entire system is formed as shown in FIG. 5, and a frame body 48 on which the adjustment leg 45 is placed is attached to a part of the frame body 47. A recess 49 is formed in the frame 48 so that the rubber member 52 of the adjustment leg 45 can fit therein to position the adjustment leg 45.

Also, looking at the height relationship of the carrying-in conveyor 1, weighing conveyor 2, and pasting conveyor 3 in this embodiment, as shown in FIG. 6, which is simplified, the weighing conveyor 2 is higher than the carrying-in conveyor ₁ by a height h1 ,
The pasting conveyor 3 is set to be higher than the weighing conveyor 2 by a height h ₂ , so that when the goods are transferred from the carry-in conveyor 1 to the weighing conveyor 2, the center of gravity of the goods moves quickly, and weighing is performed quickly. When the weighed articles are transferred from the weighing conveyor 2 to the pasting conveyor 3, the center of gravity of the articles is moved quickly, so that the weighing conveyor 2 is quickly cleared and the next article can be quickly weighed. .

In such a configuration, the articles transferred from the carry-in conveyor 1 to the weighing conveyor 2 are weighed while being conveyed on the weighing conveyor 2. That is, weighing conveyor 2, drive roller 1
1. The weighing conveyor section 29 consisting of the motor 19 etc. corresponds to a placing tray, but is independent from the cover 41 and is attached to the electrical resistance wire weighing mechanism 30 such as the load cell member 33. It is. In this case, since the mechanical displacement during empty loading and under heavy load is very small at 0.1 mm, the measuring time can be shortened and the speed of measuring and pasting processing can be increased. Furthermore, even when a load is applied to the weighing conveyor 2, the height relationship with the other carry-in conveyors 1 and pasting conveyor 3 does not change.

By the way, at this time, the weighing section including the weighing conveyor section 29 and the electric resistance wire weighing mechanism 30 must be maintained in a horizontal state. It is confirmed by the level gauge 10 whether this measuring section is horizontal. Therefore, if the adjustment leg 4 is not level,
The heights of the four corners of the base plate 31 can be adjusted as appropriate by rotating the adjustment leg 45 using the metal ring 46 of No. 5. As a result, the measuring section attached to the base plate 31 is placed in a horizontal state, and can be maintained in this state since the adjusting leg 45 does not easily turn. In this case, prior to this, the adjustment leg 9 is adjusted so that the entire system is in a horizontal state,
The carry-in conveyor 1 and the pasting conveyor 3, which are integrally attached to the frame body 47, are horizontal.

Furthermore, looking at the attachment state of the measuring section to the frame 48, it is attached via the base plate 31 and the adjustment leg 45, but the frame 48 has a recess 49 that receives the rubber member 52 of the adjustment leg 45. , so that the rubber member 52 is positioned simply by aligning it with the recess 49 and will not shift. Since it is simply placed on the frame 48 in this way, the measuring section can be easily attached to and removed from the frame 48 in the event of repair or adjustment.

In this invention, as mentioned above, the base plate on which the measuring section is attached is supported by the adjusting legs, so that the measuring section can be placed in a horizontal state by adjusting the adjusting legs. Since a recess is formed to receive the sides, the measuring section can be installed in a positioned position relative to the frame, and at the same time, it has the effect of being able to be easily attached to and removed from the frame during repairs, etc. be.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a perspective view of the whole, Figure 2 is a perspective view of the measuring section, Figure 3 is an enlarged perspective view of the deceleration mechanism, Figure 4 is a perspective view of the metering mechanism, Figure 5 is a perspective view of the frame, FIG. 6 is a simplified front view, and FIG. 7 is a partially cutaway side view of the adjustment leg. 1... Loading conveyor, 2... Weighing conveyor, 3
... Pasting conveyor, 11 ... Drive roller, 19 ...
...Motor, 29...Measuring conveyor section, 30...Electric resistance wire type weighing mechanism, 31...Base plate, 45...
... Adjustment leg, 46 ... Frame body, 49 ... Recess.

Claims (1)

[Scope of utility model registration request] It consists of a weighing conveyor located between the carry-in conveyor and the pasting conveyor, a drive roller that rotates to move the weighing conveyor and supports one end of the weighing conveyor, and a motor that rotates the drive roller. The weighing conveyor section is attached to an electric resistance wire type weighing mechanism fixed to a base plate so as to weigh the goods while conveying them, and adjustable legs are provided that can adjust the height while receiving the four corners of the base plate, and the adjusting legs An automatic weighing conveyor device characterized in that a frame supporting the is formed with a recess for receiving the lower end of the adjusting leg.