JPS5819203B2 - weight measuring device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a weight measuring device.

For example, in a sorting device that sorts fruits, etc. by weight, the fruits, etc. are transported along a sorting line, the weight is measured on this sorting line, and the fruits, etc. are divided into weight classes based on the measurement results. .

When measuring weight in such cases, if the object to be weighed is stopped during measurement, processing capacity will be reduced, so it is required that the transfer of the object to be weighed is not interrupted during measurement. An object to be weighed is placed on a packet of a predetermined weight that is engaged with a conveyor body, and is transferred by the conveyor body, and during the transfer, the object to be weighed is passed along with the packet on a weighing device. The weight of the object to be weighed is measured as a whole packet, but in this process, when the object to be weighed passes over the weighing device, the packet is engaged with the conveyor body and is restrained, so accurate weighing cannot be achieved. The problem was that it was impossible.

The present invention has been made in view of the above circumstances, and it is possible to weigh the object to be weighed, which is carried by the first conveyor while being supported on a packet, in each packet during the transfer. When the packet passes over the large pan of a donkey-pal balance used as a weighing device, the packet is disengaged from the first conveyor body and relayed by a second conveyor body attached to the top pan of the balance. In this way, the weight of the object to be weighed surrounding the packet is measured while keeping the packet unrestrained with respect to the first conveyor body, so that an accurate measurement value can be obtained.

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a machine frame, and an endless roller chain 3 is disposed oppositely through a rail 2 on both sides of the upper part along the longitudinal direction of the machine frame 1, and an engaging rod 4 is disposed in the longitudinal direction between the roller chains 73 on both sides. First conveyor bodies 5 are installed at appropriate intervals to move in a certain direction (to the right in FIG. 2).

The front part of the packet 6 is vertically rotatably engaged with the engaging rod 4 of the first conveyor body 5, and the rear part of the packet 6 is positioned below the transition trajectory of the engaging rod 4. It is supported on guide rails 7 on both sides provided on the machine frame 1 via support rollers 8 so that it can be moved freely.

This packet 6 is provided with a frame 10 in which a recess 9 having a substantially inverted truncated cone shape is formed in the upper plate part, and loose fitting holes 12 are provided in the front lateral direction of both side wall plate parts 11 of the frame 10. At the same time, the support roller 8 is rotatably supported at the rear part of both side wall plate portions 11 via a shaft rod 13, and the first conveyor body 5 is formed with respect to the loose fitting hole 12. The engaging rod 4 is penetrated in a loosely fitted state, and the supporting roller 8 is supported on the guide rail 7, and in this state, it is pulled by the engaging rod 4 as the first conveyor body 5 is driven. It is designed to be transported in parallel.

In this case, the loose fitting hole 12 is formed to a size that allows the engagement rod 4 to move within a certain range in the forward and backward direction and the up and down direction in the transfer direction (right side in FIG. 2). and when transferring, the engaging rod 4
The front hook of the loose fitting hole 12 engages with an engagement edge 12a serving as an engagement portion.

Reference numeral 13 denotes a Roberhull type balance, and this Roberpal type balance 13 has support frames 14 erected on both sides of the lower part of the machine frame 1, and extends in the front and back direction from the upper and lower parts of the support frames 14 on both sides. The middle parts of the swinging frames 15 and 160 are supported by shafts 17 and 18 so as to be able to swing freely in the vertical direction, and an elevating frame 19 is raised and lowered between the front parts of the upper and lower swinging frames 15 and 160 by shafts 20 and 21. A parallelogram link 22 is formed by movably pivoting, and a top plate part 23 is provided between the upwardly protruding parts of the elevating movable frame 19 in the parallelogram links 22 on both sides. It is constructed by connecting a measuring section 24 between the rear protrusions of the upper swinging frame 15 in the link 22 .

The top plate portion 23 has side frame plates 25 in an inverted triangular shape attached to the upper portions of the vertical movement frames 19 on both sides, and a motor roller 26 with a built-in electric motor (not shown) mounted between the side frame plates 25 on both sides by a shaft 27. In addition to being rotatably mounted on an axis,
Side rollers 28 and 29 are rotatably mounted on a shaft 30 between the upper front portion and the upper rear portion of the side frame plates 25 on both sides, and a second conveyor is connected between the side rollers 28 and 29 and the motor roller 26. It is formed by rotating the endless belt 31 as a body, and the ascending side portion 31a of the endless belt 31 in the top plate portion 23 is the transition of the engagement rod 4 in the first conveyor body 5. The first conveyor body 5 is positioned below the trajectory and faces the lower end surface of the packet 6 being transported by the first conveyor body 5, and faces in the same direction as the first conveyor body 5. It circulates while being transferred at a faster speed.

The measuring section 24 also includes a connecting frame 32 that is horizontally suspended between the rear portions of the upper swinging frames 15 on both sides, and an interlocking rod 33 that extends in the front-rear direction with respect to the connecting frame 32.
A weight 34 is attached to the interlocking rod 33 in a cross-shaped manner, and a weight 34 is attached to the interlocking rod 33 so that its position can be freely adjusted back and forth, and one end of a chino 36 is connected to the lower rear end of the interlocking rod 33 via a coil spring 35.
This chino 36 is hooked onto a sprocket 38 which is mounted on the machine frame 1 via the interlocking shafts 3 and 7, and the other end is fixed to the sprocket 38, and the pointer 39 is attached to the interlocking shaft 37. In addition to fixing the proximal end, this pointer 39
It is formed by making the tip end face the scale plate 40 provided on the machine frame 1.

Furthermore, the horizontal rod 41 is hung between the elevating frames 19 on both sides of the donkey-pal type balance 13, and the stopper frame 42 for the horizontal rod 41 is attached to the machine frame 1.
Upper and lower stoppers 42a are attached to the stopper frame 42 and provided on the stopper frame 42.

42b is made to face the upper and lower parts of the horizontal rod 41 to limit the movement of the elevating frame 19 within a certain range.

A cushion roller 43 is placed in front of the ascending side 31a of the endless belt 31 of the Roba-Pal Takebin 13 in the direction of movement, and is rotatably installed horizontally between the upper both sides of the machine frame 1. A selection clutch 44 is provided between both upper sides of the machine frame 1, facing the lower end of the packet 6, and located in front of the cushion roller 43.

This selection clutch 44 has support frame pieces 45 on both sides of the machine frame 1.
The base end of a rotating rail piece 46 extending forward is rotatably supported by a shaft 46a at the upper end of each support frame piece 45, and the rotating rail piece 46 Link pieces 47 and 48, which can be bent rearward and upward, are hung between the front lower part of the support frame piece 45 and the upper front part of the support frame piece 45, and are mounted on a shaft. A spring 4 is provided between the frame 1 and the link piece 46 and between the machine frame 1 and the link piece 48.
9.50 is stretched to urge the rotating rail piece 46 forward and upward, and the link pieces 47 and 48 are urged forward and downward, and between the support frame pieces 45 on both sides. Rotation axis 51
The levers 52 on both sides of the link piece 48 are rotatably supported on the front part of the rotating shaft 51, and the arm 53 protruding from the rear part of the rotating shaft 51 is supported on the front part of the rotating shaft 51. It is formed by interlocking and connecting the operating portion of a solenoid 54 provided on the machine frame 1.

Further, a safety plate 56 is provided upright on both sides of the upper part of the machine frame 1 via a hinge 55 so as to be rotatable in both directions, located in front of the installation location of the selection clutch 44, and the upper end of the opposing safety plate 56 The guide rail piece 57 is bent inward, and a coil spring (not shown) is stretched between the safety plates 56 on both sides.

Further, a return rail piece 7a is disposed on the sending side (on the left side in FIG. 1) in the transfer process of the packet 6 and is movably interposed in the middle of the guide rail 70. A lifting plate 58 and several guide rollers 59 are located between the guide rails 7 on both sides in the path between the location where the rail piece 7a is laid and the location where the endless belt 31 is set on the donkey-pal type balance 13. The guide rails 7 are arranged sequentially, and the guide rails 7
A centered guide bar 60 is provided along.

The guide rail 7 is connected to the endless belt 3.
In the state relayed by 1, the state continues after the state is relayed, and then the rotating rail piece 46
and are sequentially relayed by the guide rail pieces 57 and extend toward the front of the transfer stroke.

Further, a descending guide 61 for the rotating rail piece 46 is provided between the machine frame 1 and located below between the guide rail pieces 57 on both sides, and a return guide 62 is provided at a distance in front of the descending guide 61. Further, a lead-out chute 63 is provided below the descending guide 61 and directed to the lower end side of the descending guide 61.

In the figure, 64 indicates a proximity switch for measurement detection, 65 indicates a proximity switch for packet signals, and P indicates an object to be weighed.

In such a configuration, a driving force is transmitted to the roller chain 3 by a prime mover (not shown) to drive the first conveyor body 5.
At the same time, the motor roller 26 is driven to rotate the endless belt 31, and in this state, when the object to be weighed P is placed on the packet 6 located on the sending side of the transfer process, the packet 6 is The object to be weighed P is towed and transferred by the first conveyor body 5 while being guided by the rising plate 58 and the guide bar 60 in a state where it is supported;
As the supporting rollers 8 of the packet 6 move away from the guide rail 1 after passing on the guide roller 59, the lower end surface of the packet 6 is transferred onto the ascending side 31a of the endless belt 31.

In this case, since the rotation speed of the endless belt 310 is set to a faster speed than the transfer speed of the first conveyor body 5, the packets 6 are transferred at an increased speed. The engagement edge 12a of the hole 12 is disengaged from the engagement rod 4 of the first conveyor body 5, and the packet 6 is placed on the endless belt 31 to be weighed in an unrestrained state with respect to the first conveyor body 5. Item P will be loaded.

In this state, the Roba Pal Bushinbin 13 acts,
The object to be weighed P including the packet 6 supported on the top plate part 23 is measured in the weight part 24, and the weight is sorted by comparing the measured value with a preset reference value via a control device (not shown). and sends a predetermined selection signal to the solenoid 54 of the selection clutch 44.

Then, the object to be weighed P whose weight has been measured on the top pan 23 is transferred together with the packet 6 again by the first conveyor body 5, and the rear part of the packet 6 is transferred to the i-separated latch 4.
If the weight of the object to be weighed P is heavier than the reference value at the stage of being transferred onto the rotating rail piece 46 of No. 4, the solenoid 54 is activated based on the selection signal from the weighing section 24,
The link pieces 47 and 48 are bent through the actuating lever 52, and as a result, the rotating rail piece 46 tends to rotate downward and forward using the shaft 46a as a fulcrum. At the same time, the object to be weighed P is separated from the packet 6, released onto the descending guide 61, and guided to a predetermined collection location via the delivery chute 63.

On the other hand, after the object to be weighed P has been discharged, the packet 6 is returned to its original position via the return guide 62 and is then transported along the guide rail 7 toward the next process.

Further, if the measured weight of the object to be weighed P is lighter than the reference value, the sorting clutch 44 does not operate and the packet 6
is transferred to the next process via the rotating rail piece 46 and the guide rail piece 57 while supporting and holding the object to be weighed P.

Note that the rotating rail piece 46 in the selection clutch 44
When rotating, if the packet 6 does not rotate smoothly because the support rollers 8 of the packet 6 are caught on the guide rail piece 57, etc., the safety plates 56 on both sides may move outward due to the weight of the object to be weighed P. This acts to smoothly rotate and tilt the packet 60 and release the object P to be weighed.

According to the present invention, the packet carrying the object to be weighed is towed and transferred by the engagement between the engagement portion and the engagement rod of the first conveyor body, and the packet is transported by a donkey pal provided in the middle of the transfer. At the stage when the Bujin bottle is transferred onto the large plate part, the second conveyor body of the top plate part transfers the relay at a faster speed than the first conveyor body, and thereby the engagement part and the first conveyor body are transferred. As the body disengages from the engagement rod, the packet
The first conveyor body is weighed in a completely free state, so the weight of the objects to be weighed, including packets of a predetermined weight, is accurately measured. Therefore, it is possible to provide an ideal device that is capable of carrying out measurements and also transporting objects to be weighed during weighing.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a plan view of the device, Fig. 2 is a side view thereof, Fig. 3 is a sectional view taken along Fig. 2 A-N, and Fig. 4 is a cross-sectional view of the device. A cross-sectional view in Figure B-B′,
FIG. 5 is a sectional view taken along line C-σ in FIG. 2, FIG. 6 is a perspective view of a packet in the same device, and FIG. 7 is an enlarged side view with a portion cut away. 4... Engagement rod, 5... First conveyor body, 6°. ...Packet, 12a...The hook is the engagement edge as the engagement part, 13...Robapal Bujin bottle, 2
3...Top plate portion, 31...Endless circulating belt as a second conveyor body, P...Object to be weighed.

Claims (1)

[Claims] 1. A first conveyor body having an engaging rod, and a hook that is removably engaged with the engaging rod of the first conveyor body has an engaging portion and supports and engages the object to be weighed. A packet of a predetermined weight is towed and transferred by the first conveyor body by the engagement of the coupling rod and the engaging portion, a donkey-pal type balance disposed midway in the transfer process of the packet, and this A conveyor is provided on the top pan of the balance to support the packet and transfer it at a faster speed than the first conveyor, and this speed difference causes the engaging rod to disengage from the engaging part (second conveyor). A weight measuring device characterized by comprising a conveyor body.