JPH0328377Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Industrial Application Field) The present invention is designed to quickly transfer a flake-like sample cut from a metal sample to an analyzer when performing metal component analysis, such as gas-in-metal analysis. This invention relates to an automatic sample supply device that automatically supplies samples with high precision. (Prior art) Normally, when performing gas component analysis in metal, a particle-shaped sample is cut out from a metal sample using a drill or other suitable machine tool, as shown in Figure 9. This sample is temporarily stored in a container.
Thereafter, each sample is weighed according to the target component of the gas analysis, and the weighed samples are supplied to each analyzer for analysis. Conventionally, particle-shaped samples are cut using, for example, a chip sample automatic adjustment device (NSK type DS-2 type manufactured by Nippon Cutting Machine).
It is automated by something like Further, the analyzer prints the analysis results after the sample is set in a predetermined position. For example, there is an automation device such as EMIA-3200 (manufactured by Horiba, Ltd.). However, the above-mentioned sample storage, transport, weighing, and sample setting are all done manually, and there is still no device that automatically supplies particle-shaped samples to a plurality of analyzers. (Problems to be Solved by the Invention) As mentioned above, the conventional method has the drawback of being labor-intensive and time-consuming because it is all done manually. In addition, there are the following problems in automating the process, and it is not possible to automate the process simply by combining individual devices for each part. (1) As shown in Table 1, if particles with a particle size of approximately 30 mesh or less are mixed in the sample cut with the automatic chip sample preparation device (NSK type DS-2), the surface area will decrease due to the fine particles. It is known that analysis values are particularly high in carbon analysis due to factors such as large contamination and adsorption per unit weight, and being a precipitate (carbide) in metal. Therefore, those with approximately 30 meshes or less must be removed.

[Table] (2) If, for example, a component is unevenly distributed within a metal sample, the concentration of the component will differ depending on the depthwise cutting position with a drill, as shown in Figure 10. The sample must be homogenized. (3) Normally, the amount of sample supplied to an analyzer that performs gas analysis in metals is small (1 g or less), and in order to perform accurate analysis, fluctuations in the amount of sample supplied must be minimized. Must. The purpose of this invention is to solve the above-mentioned drawbacks of manual labor and problems with automation.
An object of the present invention is to provide an automatic sample supply device capable of automatically supplying an analysis sample to an analyzer quickly, accurately, and automatically. (Means for solving the problems) The gist of the present invention is as follows. That is, there is a sorter that sends the sample (chip) cut out from the sample metal to the next process, and a sorter that receives the sample from the sorter and distributes a predetermined amount of sample to a sample weighing container and a sample storage container, and then distributes it to the sample weighing container. The sorter consists of a sample dispensing device for discharging the collected sample to a transport system to an analyzer, and the sorter consists of a metal chips supplying device installed at a predetermined inclination, and a metal chips supplying device arranged at a predetermined inclination, and a device disposed at a lower part thereof that runs perpendicularly to the flow direction of the metal chips. It consists of a hopper for removing fine particles at the front, a sample hopper at the front, and a conveyor that receives the sample from the sample hopper and sends it to the next process. a distribution hopper that dispenses the sample to the sample weighing container and the sample storage container below, a weigher that weighs the sample in the sample weighing container together with the container, and a weighed sample that dispenses the weighed sample to the entrance of the transport system to the analyzer. A sample supply device for a metal component analyzer, comprising a device for moving and reversing a weighing container back and forth, a supply device for the sample storage container, and a transport device for the sample storage container that moves to a predetermined position after receiving the sample. The present invention has the following features. Chips cut out from the sample metal with a drill or the like were passed through the sorter, so that only the chips with large particle size were provided to the sample. Therefore, it is possible to avoid analysis errors due to the fine powder contamination as described above. The sample is distributed to a plurality of sample weighing containers and sample storage containers using the distribution hopper of the sample dispensing device so that the components are not biased, automatic weighing is performed, and the sample after weighing is automatically discharged to the analysis system. . Additionally, the supply and removal of sample storage containers was automated. Therefore, a homogeneous trace sample can be automatically delivered to the analysis system. (Example of the invention) An example in which the invention is applied to a sample supply device of a gas in metal analyzer will be described below with reference to the drawings. The sample supply device of the gas-in-metal analyzer includes a sorting section 7 that separates fine powder of 32 meshes or less from chips cut out from the sample metal 11 and flake-like samples; A transport unit 8 that dispenses the sample, a division weighing unit 9 that divides the sample into a sample for each component to be analyzed and a sample for storage, and weighs the sample.
(FIG. 2), it is comprised of a storage sample transport section 12 that supplies and dispenses storage containers, and a transport section 70 that supplies weighed samples to an analyzer. As shown in FIG. 3, the sorting unit 7 is pre-adjusted to a fixing table 10 that sandwiches the sample metal 11 of an automatic chip sample adjustment device (not shown) that cuts out a chip-like sample from the sample metal 11. A shooter 1 with a predetermined angle is installed, and a two-way inside is installed at the bottom of the shooter 1 to collect fine particles of 32 meshes or less and to sort out particle-like samples of 32 meshes or more.
A sorter 2 partitioned into rooms is provided. In this sorter 2, samples of 32 meshes or less are taken into a chamber 3' in front of the shooter 1, and samples of 32 meshes or more are taken into a supply port 3. As shown in FIGS. 1 and 3, the conveyance section 8 includes a belt conveyor 16', one end of which is installed directly below the supply port 3 for supplying 32 meshes or more of samples to the sorter 2, and a support stand for the belt conveyor 16'. 13, and the belt conveyor 16' consists of a drive motor section 14, two rollers 15, a belt 16, and a windshield 17 to avoid taking in surrounding dust. As shown in FIGS. 2 and 4, the dividing/weighing section 9 includes a hopper 4 that performs pendulum vibration from side to side, which is installed directly under the belt 16 at one end of the conveyance section 8, and a hopper 4 that performs left and right vibrations. There are sample receiving containers 5 and 6 installed directly below each stopping position, and a drive unit having a function of driving the hopper 4 and sample receiving containers 5 and 6 and a balance function for weighing the sample.
It consists of a weighing section 18, and a drive section 19 for moving the hopper 4, sample receiving containers 5 and 6, and the drive/weighing section 18 to a predetermined position. As shown in FIGS. 4, 5, and 6, the drive/weighing unit 18 connects the supply port of the hopper 4 to the storage container
The position of sample receiving containers 5 and 6 from the top position,
drive motor 2 for making the pendulum vibrate, respectively.
0, support rods 21, 21' for supporting the sample receiving containers 5, 6 and weighing the sample, and fulcrum pins 22 provided at predetermined positions of the support rods 21, 21'.
22' and weights 23, 23' fixed by pins 24, 24', and support rods 21, 2 to detect the balance between the sample and the weights 23, 23' by positioning.
Positioning rods 25, 25' provided at one end of 1'
, proximity switches 26 and 26' capable of detecting this with light, and a device for dropping the sample in the sample receiving containers 5 and 6 directly below by simultaneously inverting the sample receiving containers 5 and 6. A drive motor 27 and gears 28, 2 for simultaneous reversal are provided.
9 and the gear 29, a gear 30 is connected to the support rod 21', and a pin 31 is connected to the gears 29, 30.
Rotating bodies 33, 33' are connected at 31' and can be rotated by a frame 40 and ball bearings 32, 32', and a fulcrum pin 22 fixes the rotating bodies 33, 33' and supports 34, 34', respectively. ，
22'. As shown in FIGS. 2 and 7, the drive unit 19
A support stand 38 that supports the driving/weighing section 18 and has rails 36, 37 so as to be movable, and support rods 41, 41', 42, 42' that support the support stand 38.
and an air cylinder 4 fixed to a support base 38 for moving the drive/weighing section 18 to a predetermined position.
It consists of 3. The storage sample transport section 12 is a belt for transporting a storage sample container 47 having a preset claw 48 to a predetermined position (near section B in FIG. 7) as shown in FIGS. 1 and 7. Conveyor 49 and
A drive section 50 for transporting the storage sample container 47 to a predetermined position, a support stand 53 having a rail 52 to support the drive section 50 and enable movement, and a rack pinion for moving the drive section 50. Mechanism 2
6 and a rotary motor 35, and a belt conveyor 63 for conveying the storage sample container 47 to a predetermined position. The drive unit 50 is mounted on a rail 52 so as to be movable.
A fixed base 5 having a guide rail 62 connected to
4 and fixing base 54 with pins 58, 59, 60, 61
(61 is not shown) is connected to a fixed base 66 fixed in parallel and a drive rod 64 of an air cylinder 55 installed on the fixed base 66, and the storage sample container 47 is raised and lowered by driving the air cylinder 55. a movable plate 67 having a support rod 65 for movement, and a shaft rod 5 fixed to the fixed base 54 so that the movable plate 67 can move perpendicularly to the fixed base 54.
6, 57 and the shaft rod 56 fixed to the fixed base 66,
To hold the vertical axis of 57, the axis rod 5
Cylinder 6 that makes contact with 6 and 57 and allows smooth sliding
8 and 69 (the area above 69 is omitted in the figure). As shown in FIGS. 1 and 8, the transport section 70 includes sample receiving funnels 71 and 7 for transporting the sample weighed in the sample receiving containers 5 and 6 to the analyzer.
1', transport pipes 72, 72' connected to sample receiving funnels 71, 71', and suction pipes 73, 73' connected to a suction device (not shown). In order to supply the sample to the combustion crucible (not shown) set in advance on the analyzer without scattering the sample, a sample input funnel 7 is provided directly above the combustion crucible.
5, 75', and a fixing base connected to guide rails 82, 82' for fixing support rods 80, 80' for raising and lowering the sample input funnels 75, 75' when moving the combustion crucible containing the sample. 81, 81' and
The above cyclones 74, 74' and air cylinders 76, 76' are connected to support rods 77, 77', 78, 7.
8', 79, 79' and a frame 83 fixed thereto. (Function of the invention) The sample supply device of this invention is constructed as described above, and the operations of sorting, dividing, weighing, and transporting samples using this device will be described below. First, in sorting, as shown in FIG. 3, chips with non-uniform particle sizes are cut out by an automatic chip sample adjustment device (not shown) and are supplied to a sorter 2 via a shooter 1. . At this time, since the shooter 1 has a predetermined angle, fine powder with a particle size of 32 mesh or less falls into the front chamber 3', and particles larger than that fall into the supply port 3. At the same time, the belt conveyor 16' is operated, and the sample supplied from the supply port 3 is transferred to the dividing/weighing section 9 by the belt 16.
transported to. At the same time as the above-mentioned sorting operation is started, the hopper 4, the sample receiving containers 5 and 6, and the drive/weighing section 18
1 and 7, the hopper 4 is moved by the air cylinder 45 via the rail 37 to just below one end of the belt conveyor 16'. Therefore,
The positional relationship between the hopper 4, the sample receiving containers 5 and 6, and the preset storage sample container 47 (detailed operation will be described later) is as shown in FIG. Hopper 4, sample receiving containers 5, 6 and drive
After the weighing section 18 has moved to a predetermined position, the drive motor 20 is activated and the hopper 4 is moved to a predetermined position on the left and right, as shown by the dotted line, before the sample is supplied.
The pendulum oscillates between Then belt conveyor 1
A predetermined amount of the sample transported by 6' is sequentially supplied to the hopper 4, and as the hopper 4 vibrates in a pendulum manner as described above, it is evenly supplied to the sample receiving containers 5, 6 and the storage sample container 47. When a sample of a predetermined weight is placed in the sample receiving containers 5, 6, the weights 23, 23' are moved to the pins 24, 24, 24, 24, 24, 22', etc. so as to maintain balance via the support rods 21, 21' and the balance fulcrum pins 22, 22'. 24' are fixed at appropriate positions in advance, and when the sample is uniformly supplied to the sample receiving containers 5 and 6 by the pendulum vibration of the hopper 4 and reaches a predetermined weight, the support with the above-mentioned balance function is The rods 21, 21' are arranged horizontally. At this time, the positioning rods 25, 2
5' is designed to block the light from the proximity switches 26, 26', so that the proximity switches 26, 26' operate to stop the operation of the hopper 4 at the position. The predetermined weight is the sample receiving container 5.
If there is a difference between 6 and 6, the one that has not reached the specified weight,
For example, the hopper 4 is tilted between and, and the same action as above is repeated until a predetermined weight is reached. As described above, the sample can be weighed. After a predetermined weight of the sample is supplied to the sample receiving containers 5 and 6, the driving and weighing operations are performed so that the hopper 4 and the sample receiving containers 5 and 6 are located directly above the sample receiving funnels 71 and 71', respectively. The section 18 is moved by the air cylinder 43 via the rail 37 (FIG. 7). After the movement is completed, the drive motor 27 rotates to rotate the support rod 21 via the gears 28, 29, the rotating body 33, and the support body 34. The gear 30 is interlocked with the gear 29, and the support rod 21' rotates in the opposite direction to the support rod 21 via the rotating body 34' and the support body 33'. By the above-described operation, the sample receiving containers 5 and 6 are rotated by 180 degrees, and the sample is delivered to the sample receiving funnels 71 and 71' directly below. After dispensing, the drive motor 27 rotates in the opposite direction, and the sample receiving containers 5 and 6 return to their original positions. The storage sample container 47 is supplied and dispensed by the seventh
As shown in the figure, the drive unit 50 is positioned at the arrow B in the figure by the drive unit 51, and the moving plate 67 is lowered by the air cylinder 55. Before sample cutting begins, the storage sample container 47 that has been set in advance is moved to the position indicated by arrow C in the figure, and the claw 48 is moved to the position indicated by arrow C in the figure.
is located on the support rod 65 of the drive section 50. After the storage sample container 47 is raised by the air cylinder 55 via the moving plate 67 and the support rod 65, it is moved by the drive unit 51 to the position indicated by the arrow D in the figure via the drive unit 50, and at this time the hopper 4, sample receiving container 5,
The positional relationship with 6 is as shown in FIG. After the above-mentioned dividing and weighing of the sample is completed, the drive weighing section 1
8 is moved to a predetermined position, the drive unit 50 is moved by the drive unit 51 to the position indicated by the arrow E in the figure, and the storage sample container 47 is lowered by the air cylinder 55 via the moving plate 67 and the support rod 65. Then, it is set on the belt conveyor 63. Thereafter, the storage sample container 47 is transported to a predetermined position by the belt conveyor 63. The sample is transported to the analyzer as follows. As shown in Fig. 1, the sample receiving funnel 7
The sample discharged to 1, 71' is transferred to transport pipes 72, 7
2', immediately after the drop, the suction device (not shown) connected to the cyclones 74 and 74' in Figure 8 is activated, and the sample is transported in the direction of arrow F, and the sample is introduced. A sample is supplied in advance to a combustion crucible (not shown) set in an analyzer (not shown) through the funnels 75, 75' and precisely weighed. Since the combustion crucible moves horizontally, during movement, the sample input funnels 75, 75' are moved upward via guide rails 82, 82' by air cylinders 76, 76'.
After the combustion crucible is moved and a new combustion crucible is supplied, the sample input funnels 75, 75'
moves downward and returns to its original position. The combustion crucible containing the sample is analyzed by an analyzer to obtain quantitative results of gas components in the metal. The above operations are automatically performed by an automatic control device (not shown), and no human effort is required to operate the device of the present invention. (Effects of the invention) As described above, the automatic sample supply device of this invention has a sorting section, a conveying section, a driving/weighing section, and a sorting section having a sorter divided into two chambers, which allows chips to be The fine powder sample inside is removed, and the sample is sequentially transported by a conveyor section with a belt conveyor.
Since the dividing/weighing section consisting of the weighing section can supply a weighed sample without segregation, it has the effect of being able to quickly, accurately, and automatically supply samples to a plurality of analyzers.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the overall configuration of the present invention, Figure 2 is a partially enlarged diagram to explain the configuration of the dividing/weighing section, Figure 3 is an explanatory diagram of the sorter, and Figure 4 is a sample weighing from a pendulum vibrating hopper. 5 is a partial side cross-sectional view illustrating the structure of the weighing section; FIG. 6 is a view taken along the - arrow in FIG. 5; and FIG. A perspective view to explain the positional relationship between the supply and discharge mechanism of the sample storage container and the sample division/weighing section, Figure 8 is an explanatory diagram of the transport system for divided and weighed samples, and Figure 9 is an illustration of the conventional manual operation. The process explanatory diagram, FIG. 10, is an explanatory diagram of the compositional variation of the chips cut out from the sample metal. 2... Sorter, 4... Pendulum vibration hopper, 5,
6...Sample weighing container, 26...Weight detection section, 47
...Sample storage container.

Claims (1)

[Scope of Claim for Utility Model Registration] A sorter that sends the sample (slabs) cut out from the sample metal to the next process, and a sorter that receives the sample from the sorter and distributes a predetermined amount of the sample to a sample weighing container and a sample storage container. The sorter consists of a sample dispensing device that dispenses the sample distributed in the sample weighing container to a transport system to the analyzer. The sample dispensing device receives the sample from the conveyor and sends it to the next process. A distribution hopper that dispenses the sample into the sample weighing container and the sample storage container below while operating with a pendulum at a predetermined amplitude, a weighing device that weighs the sample in the sample weighing container together with the container, and a weighing device that transfers the weighed sample to the analyzer. A metal component analysis device consisting of a device for moving/reversing a weighing container back and forth for discharging it to the entrance of a transportation system, a supply device for the sample storage container, and a transportation device for the sample storage container that moves to a predetermined position after receiving the sample. sample supply device.