JPS6156916A - Compound driving apparatus and device for dispersing and supplying material to be measured in combining and measuring apparatus using compound driving apparatus - Google Patents

Abstract

PURPOSE:To make the constitution compact, by driving the first member by an electromagnet, and driving the second member through a driving shaft, which is inserted into a through hole that is provided in the electromagnet, by a driving source. CONSTITUTION:When an electromagnet 2 of a vibrator 3 is intermittently excited, a sucking member 11, which is fixed to an upper base 7, is attracted to the upper surface of the electromagnet 2 at the time of excitation. Then the base 7 is displaced downward against a plate spring 9 and slanted in the same direction along the circumference of the spring 9. Therefore, the base 7 is displaced downward against a plate spring 9 and slanted in the same direction along the circumference of the spring 9. Therefore, the base 7 is displaced downward and turned in the slant direction at the same time. When the electromagnet is not excited, the attracting force to the member 11 is disappeared. Therefore the base 7 is turned to the reverse direction and displaced upward by elastic returning force at the same time. Thus a first member 5, which is attached to the base 7, is spirally moved back and forth. When air is intermittently supplied to an air cylinder 4, a piston rod 18 is moved up and down and a driving rod 20 is moved up and down through a vibration preventing rubber 19. A second member 6, which is attached to the upper end of the rod 20, is moved up and down.

Description

Detailed Description of the Invention (Industrial Application Field) The first invention according to the present application relates to a composite drive device that drives two members independently of each other using an electromagnet and another drive source. , applied to various machines, devices, etc. Further, a second invention according to the present application relates to a device for dispersing and supplying objects to be weighed, which is applied to a combination weighing device using the above-mentioned composite drive device.

(Prior art) For example, in a silk weighing device used for automatic weighing of products, in order to distribute and feed the objects to be weighed almost evenly to multiple weighing machines arranged in a circle, is equipped with an excitation-type distributed feeding device, and the objects to be weighed that are dropped onto the device from above are distributed and fed to each of the surrounding weighing machines (or a pool hopper provided corresponding to a total of ff111m). However, if the object to be weighed is something that tends to get entangled with each other and has poor fluidity, such as a product called coiled spaghetti, which is made by winding dried noodles into a coil shape, the above-mentioned dispersion feeding device is Vibration alone does not distribute the supply evenly to each weighing machine, and the supply of hl to some weighing machines may be insufficient, causing problems such as a decrease in accuracy and the inability to measure.To deal with such problems, In this case, the distributed feeding device is not only vibrated, but also made to have a compound motion such as vibration and vertical motion, or the distributed feeding device is composed of a plurality of members that operate in different motion modes. The idea is to prevent objects to be weighed from getting entangled on the device.

However, in this case, the drive mechanism of the distributed feeding device becomes significantly large, and it becomes difficult to install the distributed feeding device in a limited space surrounded by a plurality of weighing machines.

(Object of the Invention) The first invention according to the present application is applied, for example, to a distributed feeding device, etc. in the above-mentioned combination weighing device, and is applied to the first aspect of the distributed feeding device, etc. constituting the distributed feeding device, etc. It is an object of the present invention to realize a compact compound drive device that separately drives the second member with different motion types.

Further, a second invention according to the present application relates to a device for dispersing and supplying objects to be weighed in a combination weighing device using the composite drive device according to the first invention, which comprises a first object constituting the device.
．． By operating the second dispersion table in different motion formats using a compound drive device, even when the objects to be weighed are likely to get entangled, this type of table can be easily applied to multiple weighing machines (or pool hoppers). Our goal is to realize a compact distributed supply device that can supply materials in an evenly distributed manner.

(Structure of the invention) No. 1 related to the present application. The second invention is characterized in that it is configured as follows to achieve the above objects. .

That is, the compound drive device according to the first invention includes an electromagnet formed by winding a coil around an iron core, a drive shaft inserted into a through hole provided in the electromagnet, and a drive shaft that rotates or reciprocates linearly. and a drive source that operates in motion or in a motion form that combines both. Then, excitation 1 of the electromagnet
, the first member is driven by non-excitation, and the second member is driven by the drive source via the drive shaft. According to such a configuration, the first. Since the second parts are driven separately with different types of movement and, in particular, the drive shaft driving the second parts passes through the electromagnet, the entire combined drive device is constructed compactly.

Further, a bag for dispersing and supplying objects to be weighed of a combination weighing device according to a second invention, which distributes and supplies objects to be weighed dropped from above to a plurality of scrapers arranged in a circle around the periphery,
The first dispersion table has a large diameter, and the second dispersion table has a small diameter and is arranged above the first dispersion table. The dispersion table is configured to be driven by a drive source through a drive shaft inserted through a through hole provided in the electromagnet in a 4-rotational motion, a vertical motion, or a combination of both. According to such a configuration, even if the objects to be weighed dropped onto the dispersion supply device are easily entangled with each other and have poor fluidity, the movement of the first dispersion table (intermittent electromagnetic vibration due to excitation) and
This movement and the movement of the second dispersion table, which has a different movement type, effectively prevent the objects to be weighed from becoming entangled;
It will be distributed and supplied almost evenly to a plurality of weighing machines placed around the area. In particular, since the drive shaft that drives the second distribution table passes through the electromagnet that drives the first distribution table, the distribution supply device as described above can be configured compactly.

(Example) Examples of the present invention will be described below.

First, an embodiment of the composite drive device according to the first invention will be described. As shown in FIG. 1, this composite drive device 1 includes an exciter 3 using an electromagnet 2 as a drive source and an air cylinder 4, and these act as a conical first member 5 with a large diameter. , and a small-diameter conical second member 6 arranged concentrically above the first member 5.

The vibrator 3 has an upper base 7 and a lower base 8 arranged vertically in parallel, and has mounting portions 7a, . a
, 8a...8a are provided, and each corresponding mounting part 7
Leaf springs 9 . . . 9 are installed between a and sa, respectively, in a state in which they are tilted in the same direction. The electromagnet 2 is installed at the center of the upper surface of the lower base 8 via the mounting plate 10, and a required gap Δ is provided between the upper surface of the electromagnet 2 and the electromagnet 2 is attracted to the center of the lower surface of the upper base 7. A member 11 is fixedly provided, and the first member 5 is attached to the upper base 7 via a spacer 12. Here, the mounting plate 10 is attached to a plurality of ports 1-13 . ．． S using 15...15,
It is mounted so that its vertical position can be adjusted, and by adjusting its vertical position, the gap between the electromagnet 2 and the attraction member 11 can be adjusted.

On the other hand, the air cylinder 4 is attached in a suspended manner to a mounting plate 17 attached to the vibration exciter 3 or the lower surface of the lower base 8 via spacers 16... A piston rod 18 protruding upward is connected to a drive shaft 20 via a vibration isolating rubber 19.

The drive shaft 20 passes through the center of the vibrator 3 and projects upward, and the second member 6 is attached to its upper end. In order to allow this drive shaft 20 to pass through the lower base 8. Mounting plate 10
, the electromagnet 2, the adsorption member 11, and the upper base 7 each have a through hole 8b at their center.

10a, 2a, 11a, 7b are provided, and through holes 12a, 5a are also provided in the center of the mater spacer 12 and the first member 5, respectively.
is provided.

Here, the structure of the electromagnet 2 will be explained with reference to FIGS. 2 to 4. The electromagnet 2 is made up of a large number of E-shaped iron plates stacked on top of each other, the lower part is held by an iron core frame 21, and a plurality of bolts 22
...22. It is composed of an iron core 24 which is integrally fastened using nuts 23 .

The through hole 2a is bored in the center of the iron core 24 and the iron core frame 21, and sleeves 27 and 28 are fitted and fixed to the upper and lower ends of the through hole 2a, and the sleeves 27 and 28 are inserted into the through hole 2a. The drive shaft 20 is supported so as to be vertically movable. Further, the electromagnet 2 is fixed to the mounting plate 10 by bolts 29.2.9 screwed into the iron core frame 21, as shown in FIG.

As shown in FIG. 1, a first cylindrical body 30 that surrounds the protrusion of the drive shaft 20 is fixed to the top of the first member 5, and the first cylindrical body 30 is fixed to the second member 6. The second surrounding 30
The cylindrical bodies 31 are fixed, and these cylindrical bodies 3.0.3.1 prevent dust and the like from entering through the through holes 5a of the first member 5.

According to the above configuration, when the electromagnet 2 (coil 26) in the vibrator 3 is intermittently excited by intermittently energizing the electromagnet 2, the adsorption member 11 fixed to the upper base is moved when the electromagnet 2 is excited. By being attracted to the upper surface of the electromagnet 2, the upper base 7 is displaced downward against the leaf springs 9...9, and at this time, each of the leaf springs 9...9 is moved along the circumferential direction. Since they are tilted in the same direction, the upper base 7 is turned in the direction in which the leaf springs 9 are tilted while being displaced downward. Furthermore, when the electromagnet 2 is de-energized, the attraction force of the electromagnet 2 to the attraction member 11 disappears, so the upper base 7 is rotated upward in the opposite direction by the elastic restoring force of the plate springs and screws 9...9. This causes the upper base 7 and the first base 7 attached to the upper base 7 to be displaced.
The member 5 will perform a helical reciprocating motion.

On the other hand, when the piston rod 18 of the cylinder 4 is moved up and down by the intermittent supply of air to the air cylinder 4, the drive shafts 2 and 0 connected to the rod 18 via the vibration isolating rubber 19 also move up and down. Move to this.

Accordingly, the second member 6 attached to the upper end of the drive shaft 20 moves up and down.

In this way, the first member 5 and the second member 6 move independently and differently from each other due to the operation of the vibrator 3 and the air cylinder 4 in the compound drive device 1. The second member 6' is driven by the air cylinder 4 via the drive shaft 20 passing through the center of the vibrator 3. Although the second members 5, 6 are arranged close to each other and concentrically, the composite drive device @1 that separately drives them can be constructed compactly. here,
As for the effect of providing the through hole 2a in the electromagnet 2, it has been confirmed that no abnormal temperature rise occurs in the electromagnet 2 in a two-day energization test.

Note that the above embodiment uses the air cylinder 4 as the drive source for driving the second member 6, but by using a motor instead of the air cylinder 4, the second member 6 can be The member 6 may be rotated, or the drive shaft 20 or the second member 6 may be rotated and moved up and down by combining a motor and a cylinder. Synthetic 7 motions □1ゎ.

Good morning. The engineering is also good.

Next, an embodiment of a distributed supply device for a combination weighing device according to the second invention of the present application will be described.

As shown in FIG. 5, in this combination depth cutting device/11, a support stand 43 is installed above the center of the base 42, and a distributed feeding device/11 is installed in the center of the support stand 43.
14 is installed, and a plurality of supply troughs 46 are installed around the distributed supply device 44 via vibrators 45.../I5, respectively.
... 46 are arranged radially, and around the support stand 43, a plurality of pool hoppers 717... 47 are located below the tips of the respective troughs 46... 46.
is installed.

Furthermore, on the negative side of each supply trough 46...46,
Scraping compares 48...48 are provided to scrape out the objects to be weighed in the troughs 46...46 towards the pool hoppers 47...47. The output conveyors 48...48 are suspended from an upper frame 49 disposed above via parallel link mechanisms 50...50, respectively, and cylinders disposed on the upper surface of the upper frame 49. 51...51 (6th Yo□),)
I'f e, C, wire 52.5'2+fFL
It can be pulled up from the use position directly above each trough 46...46 shown in the figure to the retracted position □.Furthermore, above the distributed supply device 44, there is a J supply A guide chute 53 is provided that guides the objects to be weighed dropped from the conveyor B to the distributed supply bags m44-1m.This guide chute 53 is supported by the upper frame 49 via a chute holding member 54. However, arm portions 5'4a and 5' extending on both sides of the holding member 54
4a is a pair of motors 5 attached to an upper frame 49;
5.5'5 rotation shaft via crank arms 55a, 55a, the motors 5"5','
55 operation □ above the above distributed supply @M44
It is designed to revolve in a horizontal plane around the axis 4.

On the other hand, heavy ω detectors 56...56 are mounted on the base 42.
and a plurality of weighing machines 58 and weighing hoppers 57...57 attached to each weight detector 56...56, respectively.
...58 is on top □ Registered pool hopper 47...: bottom of 47 □
They are arranged in a circular pattern corresponding to the upper and lower sides, and on the lower surface of the support base 4'3,
A hopper opening/closing device 59 is provided corresponding to each set of pool hopper 47 and weighing hopper 57.

These hopper opening/closing devices 59...5 are activated by a motor 60 provided at the center of the lower surface of the support base 43, and press the pressing member 59a when receiving a command to discharge the object to be weighed 1,1.

The gates 47a and 57a of the pool hopper 47 and the weighing hopper 57 located on the side thereof are opened by protruding the gates 59b and 59b, respectively. , these hoppers 57...
- A collection chute 61 is provided that collects the objects to be collected and supplies them to a packaging device (not shown) disposed below.

However, the branch supply device 44 has a large diameter conical first
It has a dispersion table 62 and a second dispersion table 63 arranged concentrically above the first dispersion table 62, and a compound drive device 64 serves as a drive device for driving both the dispersion tables 62 and 63. It is used. The composite drive device 64 is the same as the one described above, and is supported on the support base 43 via springs 65...'65'', as shown in FIG. A lower base 71 constitutes a vibration exciter 66, and a drive shaft 70 which has an air cylinder 67 and is connected to a piston rod 8 of the air cylinder 67 via a vibration isolating rubber 69.An electromagnet 72, an upper base. The first dispersion table 62 is attached to the upper base 73 of the vibrator 66, and the second dispersion table 63 is attached to the upper end of the drive shaft 70. According to the above configuration, first, the first dispersion table 62 performs a helical reciprocating motion by the vibrator 66, and the second dispersion table 63 performs vertical movement by the air cylinder 67. Supply conveyor B
The objects to be weighed are dropped onto the dispersion supply device 44 by passing through the guide chute 53 which revolves in a horizontal plane around the axis of the device 44 above the dispersion supply bag @44. As it fell like it was scattered,
The actuation of the distributed supply bag @44 introduces the supply bags 4 into the roughs 46 . . . 46 arranged radially around the distribution bag. Then, this object to be measured is placed in the vibrator 45...4
5 by the vibration of each trough 46...46 and the operation of each scraping conveyor 48...48.
... 46 and put into the pool hoppers 47... 47, and the gates 47a... 47a of the pool hoppers 47...
When opened by the operation of 1) Ilt58...
58 weighing hoppers 57...57. In this way, the weighing hopper 57 of each weighing machine 58...58...
・When the object to be measured is put into 57, the Seiden detector 56・
. . 56 measures the weight of the objects to be weighed in each weighing hopper 57 . The optimal combination that yields the weight closest to the target weight within the tolerance range of is selected. Then, the gates 57a...57a of the weighing hoppers 57...57 in the total fJ1158...58 corresponding to this optimum combination are opened by the operation of the hopper opening/closing device @59...59, and the weighing hoppers 57 . . . One wave meter in 57 is discharged into the collecting station 61. As a result, objects to be weighed weighed to the target weight or a weight close to the target weight are discharged from the collection chute 61 and supplied to a packaging device (not shown). Then, the weighing hopper 5 discharges the object to be weighed.
7...57 has a pool hopper 47 located above.
...The object to be weighed for the next weighing is immediately supplied from 47,
Also, in this pool hopper 47.../17, a corresponding supply trough 46...46 and a scraping conveyor 48...
. . 48 causes the object to be weighed to be supplied from the distributed supply device 44.

However, if the object to be weighed is an item that easily gets entangled and has poor fluidity, such as coiled spaghetti, it may become entangled on the dispersion feeding device 44 and be unevenly distributed on the device 44. Some of the machines 58...58 continuously correspond to the optimal combination, and the distributed supply device 4
When objects to be weighed are continuously supplied from above 4 to the weighing hopper 57 of the weighing machine 58 via the corresponding trough 46 and pool hopper 47, on the dispersion feeding device 44, the objects corresponding to the weighing machine 58 are The number of objects to be weighed gradually decreases on the sides, and the objects to be weighed become unevenly distributed as in the above case. When such a situation occurs, the amount of objects to be weighed to be supplied to some of the weighing machines 58 (weighing hoppers 57) becomes insufficient, resulting in a decrease in the accuracy of combined weighing or the inability to weigh. However, the dispersion supply device 44 is equipped with a large-diameter first dispersion table 62 and a small-diameter second dispersion table 63 placed above the center of the first dispersion table 62 , and the first dispersion table 62 is controlled by the vibrator 66 . As the second distribution table 63 moves in a spiral reciprocating manner, the air cylinder 67
It is configured to move up and down via a drive shaft 70. Therefore, the workpieces dropped onto the dispersion supply device 411 via the guide chute 53 are first dispersed around the second dispersion table 63 when dropped onto the second dispersion table 63 and First distributed table 6
The different movements of both tables 63, 62 when stacked on top of each other will prevent or eliminate entanglement. This prevents the objects to be weighed from being unevenly distributed on the distributed supply device 44, and some of the weighing machines 58 (
Insufficient supply of the objects to be weighed to the weighing hopper 57) and the resulting decrease in weighing accuracy or inability to weigh can be prevented. And, especially in the above-mentioned distributed supply device @44,
Since the drive shaft 70 that drives the second distribution table 63 by the air cylinder 67 passes through the center of the vibrator 66 that drives the first distribution table 62, the first and second distribution tables 62 and 63 are close to each other. Although they are arranged concentrically, they can be driven separately in a compact configuration.

In this embodiment as well, by using a motor in place of the air cylinder 67, or by using a motor and an air cylinder together, the second dispersion table 63 can be rotated, or a combination of rotation and vertical movement can be achieved. You may also make it happen.

(Effects of the Invention) As described above, according to the first invention of the present application, a compact compound drive device that separately drives two members in different motion forms is realized. Eoyo, D□2
-1 to 4, by applying ia * a m s i ti to the dispersion supply device for objects to be weighed in a combination weighing device, it can also be applied to objects to be weighed (which tend to get entangled easily and have poor fluidity) in multiple weighing machines. A compact dispersion supply device capable of distributing and supplying almost evenly will be realized.

[Brief explanation of drawings]

Figures 1 to 4 show embodiments of the first invention of the present application.
The figure is a longitudinal sectional front view of the compound drive device, and Figure 2 is Figure 1 II-
FIG. 3.4 is an enlarged cross-sectional plan view of the main part taken along line II, and a longitudinal sectional front view and side view taken along lines mm and IV-IV in FIG. 5 to 7 show an embodiment of the second invention of the present application, and FIG. 5 is an overall longitudinal sectional view of the combination weighing device;
FIG. 6 is a plan view of the same, and FIG. 7 is an enlarged front view of the distributed supply device. DESCRIPTION OF SYMBOLS 1... Composite drive device, 2... Electromagnet, 2a... Through hole, 4... Drive source (air cylinder), 5... First
Member, 6... Second member, 20... Drive shaft. 41... Combination weighing device, 44... Distributed supply device,
58... Weighing machine, 62... First distribution table, 63
80. □2ka□-7),,6701. . 11 ゛A cylinder), 70... Drive shaft, 72... Electromagnet.

Claims (2)

[Claims] (1) An electromagnet consisting of a coil wound around an iron core, a drive shaft inserted through a through hole provided in this electromagnet, and a rotation or linear reciprocating motion of this drive shaft, or a combination of both. A compound drive device comprising a drive source, wherein the first member is driven by the electromagnet, and the second member is driven by the drive source via a drive shaft. (2) A device for dispersing and supplying objects to be weighed in a combination weighing device, which performs combined weighing by distributing and feeding objects to be weighed dropped from above to a plurality of weighing machines arranged in a circle around the periphery, It has a first dispersion table with a large diameter and a second dispersion table arranged above the first dispersion table, the first dispersion table is driven by an electromagnet, and the second dispersion table is provided on the electromagnet. Combined weighing using a composite drive device, characterized in that it is configured to be driven by another drive source through a drive shaft inserted into a through hole, by rotation, vertical movement, or a combination of both. A device for distributing and supplying objects to be weighed.