JPH062118Y2 - Product supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The disclosed technology belongs to the technical field of the structure of a product supply device for a device that automatically measures a set weight value of a product such as peanut.

<Summary of summary> Thus, the present invention relates to a feeding hopper such as a radiation trough facing a weighing unit such as a pool hopper connected to an upper portion of the weighing hopper that is detachably provided to the apparatus frame via a load cell or the like. In a combination weighing device having a cone type dispersion table connected to the base, etc., the invention relates to a product supply device used for a weighing device provided with an opening / closing gate via an actuator such as an air cylinder, In particular, a pair of open / close gates provided on the lower side of the feeder, etc. connected to the front end of the bucket conveyor etc. from the previous stage are rotatably provided on the side panel that guides the open / close gate via the bracket on the rear surface thereof. Rotation mounted on the side panel so as to be rotated by an actuator while being linked to the four-point link It is provided via a lever with respect to the shaft, and the lower end edge of the opening / closing gate is made to turn and move back and forth so that its locus is a plane,
Or, in the opening and closing process, there is no disturbance or the occurrence of biting between the opening and closing gates with respect to the product discharged to the dispersion table so as not to be drawn in a concave shape downward, that is, a protruding shape. The invention relates to the product supply device.

<Prior Art> As is well known, with the improvement of citizen's life, various commodities such as daily necessities have been actively traded in the distribution market in large quantities and in small quantities. It has become desirable to standardize and manage such items in a standardized manner, and in response to this, various distribution technologies have been developed and adopted.

In many cases, the volume, number, weight, etc. of the distributed products are generally used as an important index for the transaction, and the weight and the number are basically dominant among them. In addition, generally, there are many modes in which transactions are carried out at a set weight value.

Therefore, in order to produce a large amount of products weighed to a set weight value, for example, in a confectionery maker, it is necessary to accurately measure each set weight value of the products to be distributed and processed. Research and development of weighing devices, for example,
As can be seen in many of the applicants' inventions of application, the theory of probability and statistics, and the combination weighing technology by high-speed calculation of a computer have been put into practical use, and various further improvements have been made.

Therefore, in automatic weighing devices such as combination weighing devices, there is still room for research and development improvements in individual mechanism parts, and various research and development departments are keenly engaged in technological development of these.

For example, in a combination weighing device 1 as an automatic weighing device as shown in FIG. 8, a cone type dispersion table 3 is provided at the center of an upper portion of a frame 2 of a tip portion of a bucket conveyor or the like from the preceding stage not shown. Radiation troughs 4, 4, ... As a feed trough having a predetermined number of heads are provided immediately below and the feed troughs 4 of each head are supported by a load cell 6 with respect to the frame 2 via a pool hopper 5, respectively. 7 are connected, and their opening / closing gates 8 and 9 are opened / closed at a predetermined timing by an opening / closing mechanism 10 connected to a drive device provided in the central portion inside the device, and the weighed product is on the lower side. The collective chute 11 is continuously discharged to the next-stage packaging device or the like.

Thus, in the automatic weighing device 1 for the sort combination weighing,
A predetermined automatic weighing process is performed in the process from the delivery of products such as bucket conveyors from the previous stage to the packaging process of the next stage, but the product supply section at the entrance and the discharge section at the front are weighed. In order to hit the inlet and the outlet of the automatic weighing device, the weighing process of the automatic weighing device 1 cannot be performed as designed unless the feeding process and the discharging process are accurately performed. Therefore, there is a strong demand for a design that maintains stable functions.

That is, in such an automatic weighing device 1, the weighing mechanism cannot avoid vibration or swing from the internal drive mechanism or the like.
In addition, since a large number of products flow through a complicated processing step continuously and intermittently, it is necessary to ensure a stable flow of the products, especially in the supply section at the inlet.

Therefore, from the preceding stage, the product is supplied from the tip of the feeding section such as the bucket conveyor to the weighing mechanism section to the distribution table 3 and the like, which intervenes in a baton-touch manner, by the dropping method via the weight from the tip section of the bucket conveyor. For this reason, the mode of the conversion movement from the drop to the feed trough 4 by the lateral movement via the electromagnetic vibration device or the like dynamically changes, so that a stable supply is desired.

Then, the pool hopper 5 connected to the feed trough 4
Since the weighing mechanism section such as the weighing machine and the weighing hopper 7 intermittently operates with time, the product supply from the distribution table 3 to the feed trough 4 is smooth with time, and is neither too much nor too much with respect to the weighing section. Feeding must be performed in a stable manner. Therefore, the bulk capacity of the products dropped and supplied onto the distribution table 3 via a bucket conveyor or the like is detected by a photoelectric detection device or the like, and the distribution table 3 is supplied at a level below a predetermined level. A product supply device provided with a pair of opening / closing gates having a dumping function for supplying products to a product has been developed as disclosed in, for example, the invention of Japanese Utility Model Application Laid-Open No. 60-183831 of the prior application. 8 is provided on an upper portion of the distribution table 3 and an opening / closing gate (not shown) is opened / closed to the left and right to supply the products to the distribution table as stably as possible. There.

<Problems to be Solved by the Invention> However, in the product supply device installed on the distribution table 3 of the weighing device 1 of the conventional type, a pair of opening / closing gates is provided when opening / closing by an actuator such as an air cylinder. Because it is designed to make a downward swing operation,
Although it has a dumping function, it interferes with the products that have been loaded and accumulated in advance on the dispersion table 3 at the time of opening and closing, and operates to disturb the feed trough 4 for stable supply, or However, there is a problem that a product may be caught between the ends of the opening / closing gate when it is closed. Therefore, it is difficult to supply the product as designed to the original weighing mechanism. There is an inconvenience that the opening / closing operation may not be performed smoothly.

Therefore, as described above, the level when the product level on the distribution table 3 is detected by the photoelectric detection device is likely to fluctuate, and as a result, there is a negative point that the operation of the actuator for opening and closing the opening / closing gate is disturbed. It was

<Object of the Invention> The object of the present invention is to open / close the gate of the supply device for supplying the products to the distribution table etc. in the mechanism of each mechanism of the weighing device such as the combination weighing device based on the above-mentioned prior art. The technical problem to be solved is to solve the problem of operation, and while maintaining the damping mechanism of the opening / closing gate, it does not affect the products that have been loaded and accumulated in advance on the distribution table, and therefore the level detection thereof is also possible. The purpose of the present invention is to provide an excellent product supply device that can be performed as designed and can stably supply products to the feed trough in a distributed manner, which is useful in the field of measurement technology use in the distribution industry.

<Means and Actions for Solving the Problem> In order to solve the above-mentioned problems, the structure of the present invention, which is based on the above-mentioned utility model registration claim, is provided above the automatic weighing device such as a combination weighing device. On the other hand, when the product is fed and supplied from the preceding stage by the bucket conveyor, etc., the actuator is activated by the signal from the level sensor etc. to the rotary shaft mounted on the side panel of the product supply device provided on the distribution table etc. The rotating shaft is rotated in a predetermined manner, and one or both of the pair of opening / closing gates are moved forward and backward through the lever integrally provided on the rotating shaft so as to open and close. A four-point link pivotally supported by the rotary shaft via a bracket on the back surface of the gate cooperates with the pivoting movement of the lever, and the upper end of the bracket pivots while the lower end of the opening / closing gate is horizontal. Forwards and backwards, and while moving forward and backward as a whole, the leading end of the opening / closing gate does not interfere with the products deposited and deposited in advance on the distribution table. It does not adversely affect the feed trough supply, and the products on the distribution table are placed in the stacking position where they are naturally dropped so that there is no effect such as biting the products into the tip of the opening / closing gate in the process of reaching the closing position. It is maintained and supplied to the feed trough in a predetermined manner, and the weighing device is provided with the technical means for stably performing the designed weighing action.

<Embodiment> An embodiment of the present invention will be described below with reference to FIGS. It should be noted that parts that are the same as those in FIG. 8 will be described using the same symbols.

In the embodiment shown in FIG. 1, reference numeral 1'denotes a combination weighing device having a 16-head circular array as an automatic weighing device. A cone type dispersion table 3 is provided in the upper center portion of a frame 2 of the partition wall in the upper surface diametrical direction. Each of them has a semicircular shape corresponding to a head having a semi-circular shape, and each of the semi-circular shape has a respective electromagnetic vibrating device 15, 15 on its lower side so that it can be vibrated in a predetermined manner. Radiation troughs 4 and 4 as feed troughs of 8 heads each on the circular dispersion table portion.
Are provided to be superposed on the electromagnetic vibration device 16, each of which has its tip connected to the weighing hopper 7 through the pool hopper 5. Each weighing hopper 7 has a load cell inside unlike the conventional mode. The pool hopper 5 and the lid opening / closing gates 8 and 9 of the weighing hopper 7 are selectively openable / closable by a driving device 10 provided on the inner side of the pool chute 5 to a lower collecting chute 11. Although not shown, memory hoppers (not shown) each having eight heads are also interposed between them, and the opening / closing device for the opening / closing gates is detachably attached to the upper frame.

Further, a product supply device 19 which is the center of the invention is provided on the upper part of the set height of the upper dispersion table 3, and from the lower side thereof, the semicircular parts of the distribution table 3 are mutually connected. Soft resin blocking films 18, 18 for preventing commingling of products are vertically provided, and a cross feeder 20 connected to a tip end of a bucket conveyor (not shown) is further provided.

Below the cross feeder 20, as shown in FIG. 2, a pair of opening / closing gates 2 facing each other and intersecting at a set angle.
9 and 29 are provided so that the products from the cross feeder 20 can be selectively dropped and supplied to each semi-circular portion of each dispersion table 3, that is, with a shutter / damper function, and on both sides thereof. Side panels 21 and 21 are also provided as guide panels. As shown in FIGS. 2 to 7,
A fixed shaft 22, a rotating shaft 23, and a stopper shaft 24 are provided between the two at the rear end edge portion between the side panels 21 and 21 from above.

Air cylinders 25, 25 as actuators are provided in parallel on one outer surface of the side panels 21, 21.

A lever 26 having a fixed base end is fixed to the central portion of the rotary shaft 23, and a lever 27 is pivotally supported on the upper end of the lever 26, and the base end is mounted on a bracket 28 on the rear surface of the opening / closing gate 29. Pin is pivoted.

Further, a pair of other brackets 28 ', 28' are fixedly installed on both sides of the bracket 28 of the opening / closing gate 29, and the base ends of the links 30 are pin-pivotally supported, respectively, and the tips of the links 30 are rotated around the fixed shaft 22. It is movably pivoted.

Further, links 31 and 31 are rotatably pivoted on both sides of the lever 26 of the rotary shaft 23, and a length adjustable link 32 is pin-pivotally connected between its tip and the link 30. The links 30, 31, 32 are four-point links, respectively.

Further, the tip end of the rod 33 of the air cylinder 25, which can be moved back and forth, is pin-pivotally connected to the tip end of a link 34 fixed to the outer end of the rotary shaft 23 via a link 35, thereby making the rotary shaft 23 rotatable. There is.

Therefore, when the rotary shaft 23 rotates rightward by a predetermined angle in the drawing due to the forward and backward movement of the air cylinder 25, the opening / closing gate 29 on the right side moves to the right side in the drawing and opens via the levers 26, 27 and the bracket 28. However, with respect to the fixed shaft 22, and the rotary shaft 23
As a result of the four-point links 30, 31, 32 being provided, the upper end of the opening / closing gate 29 on the right side is rotated rightward about the fixed shaft 22 as shown by the arrow in FIG. The edges are configured to be able to move back and forth substantially parallel to the left and right in the figure, and therefore, the lower end edge portion of the opening / closing gate 29 interferes with the products that are supplied and accumulated prior to the upper surface of the dispersion table 3. Instead, the high level is fluctuated, and biting or the like does not occur in the closing process.

The above-described operation is the same for the other opening / closing gate 29, and the same operation is performed for each closing operation.

As a matter of course, the pair of left and right open / close gates 29, 29
Are used for supplying the respective products to the respective semicircular portions of the dispersion table 3, and the opening / closing gates 29 on the opposite sides also serve as a kind of guide chute.

And the air cylinder 25 corresponding to each opening / closing gate 29
Is operated by a control signal from a predetermined photoelectric sensor (not shown) provided above each of the semi-circular portions of the dispersion table 3, and selectively operates independently to open / close the corresponding open / close gate 29. It is supposed to do.

It should be noted that the operation mode of the combination weighing device 1'of the present invention is predetermined with a total of 16 heads, that is, 8 heads of one side weighing hopper and 8 heads of the memory hopper, by selectively combining the weighing hopper 7 and a memory hopper (not shown) below. Weigh the combination of
The following combination weighing is performed for the ones that are not involved in the combination weighing and the rest, for example, high-speed combination weighing that enables a kind of mix weighing.

Therefore, the distribution table 3 serves to supply the products to the eight heads on each side.

Although not shown, the distribution table 3 is used as described above.
A predetermined photoelectric level sensor for a product (not shown) to be dropped and supplied is provided on each side of the air cylinders 25 so that the air cylinder 25 can be expanded and contracted via a controller (not shown). If the height level of the product in the product falls below the set level, the air cylinder 25
Is expanded to open the opening / closing gate 29, and when the opening / closing gate 29 is accumulated above a set level, the opening / closing gate 29 is contracted to close the opening / closing gate 29. At that time, the opening / closing gate 29 is opened and closed as described above. As shown in the figure, the lower edge portion of each opening / closing gate 29 is horizontally advanced and retracted so as not to interfere with the preceding piled products on the dispersion table 3 so as not to disturb or be caught. The set height at that level can be maintained, and the supply of a predetermined product to the feed trough 4 can be smoothly performed as designed.

In the above-mentioned configuration, when a predetermined product such as peanut is conveyed by the bucket conveyor (not shown) from the preceding step and supplied to the cross feeder 20, the photoelectric sensor detects the supply accumulation level and the air cylinder as an actuator via the control device. 25 operates to rotate the rotary shaft 23 via the rod 33 and the links 35 and 34, whereby the opening / closing gate 29 via the levers 26 and 27 and the bracket 28,
29 has one predetermined side (or both) actuated to the opening side, and as described above by the four-point links 30, 31, 32, as shown in FIG. The upper end portion of the gate 29 pivots around the fixed shaft 22, and the lower end edge of the gate 29 horizontally moves and opens to open the cross feeder 20.
Goods falling from the other opening / closing gates 29, 29 are supplied from the gap between the other opening / closing gates 29, 29 to the corresponding semicircular portion of the dispersion table 3 as shown by the white arrow in FIG. As described above, acts as a kind of guide chute, and smoothly supplies the product to the corresponding semi-circular portion of the distribution table 3, and the distribution table 3
When the products are supplied and accumulated at the upper set level height, the photoelectric sensor (not shown) detects the level and the air cylinder 25 is retracted as described above through the control device (not shown). Return 25 to its initial position.

Then, in the opening / closing process, as described above, the lower edge portion of the opening / closing gate 29 moves back and forth substantially horizontally, so that it does not interfere with the bulky portion of the product being deposited, causing a disturbance in the stacking posture or biting. Each semicircular portion of the dispersion table 3 is supplied to the feed trough 4 of each head at a predetermined peripheral portion by the electromagnetic vibrating device 15 without causing misdetection of the detection level position by the photoelectric sensor without causing the above. After that, the pool hopper 5 and the weighing hopper 7 and the memory hopper 12 below the pool hopper 5 and the memory hopper 12 are supplied to perform a predetermined combination weighing in the same manner as in the conventional mode. Collecting chute 1 for head products that have been opened and closed in a predetermined manner by drive devices 10 and 13 and have been used for combination weighing
After the predetermined mix measurement is performed via 1 and 11 ', it is fed to the next-stage packaging device.

As described above, the opening / closing operation of the corresponding opening / closing gates 29 for the left and right semi-circular portions of the dispersion table 3 is performed through the corresponding air cylinders 25 in response to the detection of the level of the bulkiness.

Needless to say, the embodiment of the present invention is not limited to the above-described embodiments. For example, the weighing device is not only a combination weighing device having a circular arrangement of circular heads, but also a combination weighing device having a row arrangement and other automatic weighing devices. Various modes such as applicable to a device can be adopted.

In addition, depending on design changes, each opening / closing gate may be provided with one actuator such as an air cylinder, and further, all the opening / closing gates may be linked by a single actuator via a link mechanism or the like. It goes without saying that it is also possible to design the forward and backward movement of the lower end edge portion of the device so that the lower end edge thereof is curved downward in a concave shape to form a locus.

Further, it goes without saying that the actuator can be not only an air cylinder but also a solenoid, and further a motor, a rack, a pinion mechanism, or the like.

It goes without saying that the target products are all the products used in the conventional weighing process.

<Advantages of Device> As described above, according to the present invention, basically, when the product is supplied to the distribution table via the feeder from the preceding stage to the product supply unit at the upper part of the automatic weighing device of the combination weighing device, etc. When dropping products by the opening / closing gate, depending on the bulkiness level of the products supplied,
Not only the damper function is given to the opening and closing gate, but also the guide chute function is given, so that
By disturbing the level of the product to be supplied and eliminating the biting effect in the closing process, it is possible to ensure stable and repeatable product supply at the supply unit that meets the design. That is an excellent effect.

Thus, the opening / closing gate that moves laterally through the actuator in the side panel pivots with its upper end around the fixed shaft, and the lower end edge can pivot horizontally or downward in a concave shape. As a result, not only can the product supply be opened and closed reliably, but the bottom edge of the product can interfere with the upper part of the product as described above to give a disturbance or prevent a biting action. In addition, the product can be smoothly and stably supplied, and even in the initial posture, there is an effect that it is possible to prevent a product from leaking due to a gap or the like, and since the movement in the inclined posture is guaranteed. The tilted posture in the closed posture is maintained, and as described above, an excellent effect that a kind of guide chute function at the time of opening the other opening / closing gate can be surely maintained is exhibited.

Thus, not only the rotary shaft provided on the side panel via the bracket provided on the back surface of the opening / closing gate can be swung by a fixed lever, but also a four-point link to the rotary shaft and the fixed shaft is provided. By being given these four
With the point links and levers, the upper end of the above-mentioned opening / closing gate can be swung freely around a fixed shaft, and the lower end edge can be moved back and forth without interfering with the preceding piled product. To be done.

[Brief description of drawings]

1 to 7 are explanatory views of an embodiment of the present invention.
The figure is an overall schematic side view of the weighing device, FIG. 2 is a schematic perspective view of the mechanism of the product supply device, FIG. 3 is the same semi-plan view, FIG. 4 is the same side view, and FIG. 5 is a four-point link lever mechanism. FIG. 6 is a side view, FIG. 6 is an operation side view of a lever opening process, FIG. 7 is a schematic side view of an opening / closing process, and FIG. 8 is a partial vertical cross-sectional view of a combination weighing device based on the prior art. 25 ... Actuator, 29 ... Opening / closing gate, 19 ... Commodity supply device, 20 ... Feeder, 28, 28 '... Bracket, 21 ... Side panel, 30, 31, 32 ... Four-point link, 23 ... Rotating shaft, 26, 27 ... lever

Claims (1)

[Scope of utility model registration request] 1. A commodity supply apparatus having a pair of opening / closing gates in a side panel, the pair of opening / closing gates linking to actuators provided on the side panel via links, wherein the pair of opening / closing gates are provided with a side bracket via a bracket on the rear surface thereof. It is rotatably linked to the panel via a four-point link and is linked to a rotary shaft provided on the side panel and driven by the actuator so that its lower end can be moved back and forth in parallel by a lever. A product supply device characterized by being provided.