JP4322249B2 - Rubber sheet sampling inspection method and system used therefor - Google Patents

Description

The present invention relates to a rubber sheet sampling inspection method in which sample pieces for measurement are periodically collected from rubber sheets that are continuously extruded, and a rubber physical property and the like of the sample pieces are inspected by a measuring device, and a system used therefor.

  As an apparatus for kneading the rubber kneaded with chemicals such as a vulcanizing agent and a vulcanization accelerator, a hermetic mixer such as a Banbury mixer is known. Since this closed mixer is kneaded in a closed system, the chemicals can be uniformly dispersed throughout the kneaded rubber. Therefore, in the inspection process for inspecting the physical properties of the kneaded rubber to determine whether it is acceptable or not, it is only necessary to collect 3 to 5 sample pieces from the rubber lump taken out from the hermetic mixer. So, the quality was well maintained.

  On the other hand, in recent years, a continuous mixer has been developed in which a kneaded rubber is continuously extruded into a sheet using a screw type extruder. Since the kneaded rubber can be continuously supplied to the next process, the intermediate stock of the kneaded rubber is not necessary, and this is particularly advantageous in the manufacture of tires that are likely to be produced in a large variety and in small quantities.

However, in the continuous mixer, for those benefiting continuously pushing while kneaded in the cylinder, there is a possibility that the dispersion and the mixing ratio of the chemicals is changed, because its high of about once in a few minutes Collecting sample pieces and inspecting them frequently is important for ensuring quality.

Therefore, the present invention performs a series of operations of collecting sample pieces from a continuously extruded rubber sheet and delivering the sample pieces to a measuring device with high reliability and efficiency. An object of the present invention is to provide a rubber sheet sampling inspection method and a system used therefor.

JP-A-61-284400

In order to achieve the above object, the invention of claim 1 of the present application is to periodically collect a sample piece for measurement from a rubber sheet continuously extruded from an extruder, and inspect the rubber of the sample piece with a measuring device. A rubber sheet sampling inspection method,
While the rubber sheet continuously extruded from the extruder passes through the accumulator zone and is wound by a reel winder,
Between the accumulator zone and the reel winder, the rubber sheet is a cutter cradle, and a punching cutter of a sample cutter tool that is disposed above the cutter cradle and has a cylindrical hole that can be moved up and down. And punching a sample piece from the rubber sheet into the cylindrical hole with the cutter cradle by lowering the punching cutter,
The sample piece in the cylinder hole is adsorbed by the vacuum pad of the sample receiving means and transported to the sample delivery position provided in the sample measuring means at the sample receiving position immediately below the cylindrical hole of the punching cutter lifted by ascending. And
The punching of the sample piece is performed in a state where conveyance of the rubber sheet with the reel winder stopped is stopped .

The invention of claim 4 is a rubber sheet sampling system for collecting a sample piece for measurement from a rubber sheet continuously extruded from an extruder and delivering it to a measuring device,
An accumulator zone a rubber sheet which is continuously extruded from the extruder passes,
A reel winder that winds the rubber sheet that has passed through the accumulator zone;
A sampling device disposed between the accumulator zone and the reel winder; and
The sampling device comprises:
A cutter cradle in which a rubber sheet continuously extruded from the extruder passes through the upper surface;
The punching cutter is lowered when the rubber sheet is stopped while the reel cutter is stopped, and the punching cutter is disposed above the cutter cradle and has a cylindrical hole that can be moved up and down. A sample cutter tool for punching a sample piece from the rubber sheet into the cylindrical hole between the cutter cradle and lifting the sample piece by lifting,
A sample receiving means having a vacuum pad for sucking and receiving the sample piece and sending it to the sample measuring means at a sample receiving position immediately below the cylinder hole of the raised punching cutter;
The sample receiving means includes a pad swivel for directing the vacuum pad upward at the sample receiving position and downward at the sample measuring means, and the vacuum pad between the sample receiving position and the sample delivery position of the sample measuring means. And a pad moving tool that reciprocates.

  In the present invention, a punching cutter having a cylindrical hole is used for collecting a sample piece. Therefore, a sample piece can be efficiently and reliably collected by punching from a rubber sheet continuously extruded from an extruder. At this time, since each sample piece has the same shape, measurement can be performed quickly and with high accuracy by using a punching cutter that matches the shape required for the measuring apparatus. In addition, the punched (collected) sample piece stays in the cylindrical hole due to its adhesiveness, so that separation from the rubber sheet can be ensured. For example, it is possible to eliminate the need for holding the sample piece during collection. Contributes to simplification of structure.

  A vacuum pad is used as a sample receiving means. Therefore, the suction of the vacuum pad makes it possible to receive the sample piece without mistake because it stays in the cylindrical hole, and it can be securely held and transported to the sample delivery position. In particular, since the vacuum pad is used upward, the sample piece can be received and held and transported reliably and quickly. In this way, by combining the punching cutter and the vacuum pad and effectively utilizing both functions, a series of collection of sample pieces from the continuously extruded rubber sheet and delivery of the collected sample pieces to the measuring device The operation can be performed efficiently and frequently with high reliability.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view conceptually showing a rubber sheet sampling system used in the rubber sheet sampling inspection method of the present invention, and FIG. 2 is a schematic plan view thereof.

  As shown in FIGS. 1 to 3, the rubber sheet sampling apparatus 1 (hereinafter simply referred to as the sampling apparatus 1) of the present embodiment removes a sample piece Gs for measurement from a rubber sheet G continuously extruded from the extruder 2. A device that collects and transfers the sample to the measuring device 3, and includes at least a cutter receiving base 4, a sample cutter 6 having a punching cutter 5, and a sample receiving means 8 having a vacuum pad 7.

In this example, the extruder 2 is a well-known screw-type rubber extruder, and includes a rubber supply unit that quantitatively supplies lower kneaded rubber and a chemical supply unit that quantitatively supplies chemicals. It constitutes a continuous mixer that continuously extrudes the kneaded rubber mixed with the kneaded rubber and the chemical into a sheet. Further, for example, a rubber sheet G of kneaded rubber having a thickness of 8 mm and a width of 100 mm extruded from the extruder 2 is cooled in a cooling tank 9 and deposited in a deposition tank 10 as shown in FIG. After the agent is applied, it passes through the accumulator zone 11 while being air-cooled, and is then wound around the reel winder 12 and supplied to the next step (for example, a raw tire forming step). The rubber sheet G is transported by a plurality of transport rollers in this example. As described above, the sampling system includes the accumulator zone 11 and the reel winder 12 that winds the rubber sheet that has passed through the accumulator zone.

Then, the sampling device 1, the arranged between the accumulator zone 11 and the reel winder 12, for example at a frequency of once in 1-6 minutes, periodically sample piece Gs from the rubber sheet G And is transferred to a sample measuring means 20 including a measuring device 3 such as a curast meter (physical property measurement value), and the rubber physical properties are measured and inspected.

  Next, as shown in FIGS. 4 and 5, the cutter cradle 4 is installed below the rubber sheet G conveyed by the conveying roller 13 (shown in FIGS. 1 and 2), and the rubber sheet G is placed on the upper surface 4 </ b> S thereof. Pass through.

  The sample cutter 6 includes a punching cutter 5 that can be moved up and down and disposed above the cutter holder 4. The lowering of the punching cutter 5 causes the sample cutter 6 to move between the cutter holder 4 and the punching cutter 5. A sample piece Gs is punched from the rubber sheet G.

  Specifically, the sample cutter 6 is a lifting tool 15 fixed to the frame F of the sampling apparatus 1 in this example, and the punch 15 is attached to the lower end of the cylinder 15A and the rod 15A1 via the mounting bracket 16. 5 is provided. The punching cutter 5 is a cylindrical blade having a cylindrical hole 5A, and is attached to the mounting bracket 16 via the cutter holder 14 with the cutting edge facing downward. The punching cutter 5 is formed in a shape and size suitable for the sample shape (including size) required by the measuring device 3 as a measurement sample. In this example, a rectangular cylindrical shape is used as shown in FIG. Is done.

Therefore, the sample cutter tool 6 can move the punching cutter 5 up and down by the lifting tool 15, and the sample piece Gs can be moved between the sample cutter G 4 and the cutter holder 4 by the lowering of the punching cutter 5 (shown in FIG. 5). Can be punched into the cylindrical hole 5A. Further, the punched sample piece Gs adheres to the inside of the cylindrical hole 5A due to its adhesiveness, and therefore is lifted together with the punching cutter 5 ascending. Further, at the time of punching, the reel winder 12 is temporarily stopped, and punching is performed in a state where the conveyance of the rubber sheet G is stopped .

Here, on the upper surface 4S of the cutter cradle 4, a protruding portion 4A that can be positioned in the cylinder hole 5A of the lowered punching cutter 5 is provided. When the rubber sheet G is punched out, the protrusion 4A pushes the sample piece Gs into the cylindrical hole 5A, thereby ensuring the punching (cutting) of the sample piece Gs and the separation of the sample piece Gs from the rubber sheet G. . For this purpose, the protrusion height of the protrusion 4A from the upper surface 4S is preferably 2 mm or more, and more preferably 4 mm or more. However, if it is too high, the conveyance of the rubber sheet G is hindered. A thickness t or less of the sheet G is preferable. Note that the cutter cradle 4 uses a general structural rolling material such as SS400 , for example, to prevent cutting defects, and protects the cutting edge of the punching cutter 5. For the punching cutter 5, for example, a high-speed tool steel such as SKH51 is used, and as shown in FIG. 8, the cutting edge is formed in a square having a side length K of, for example, 35.0 mm. In addition, the cutting edge length h is, for example, 10 mm, which is 1 mm or more larger than the thickness t of the rubber sheet G, and the cutting edge angle α is set to 34.0 to 36.0 degrees (for example, 34 ° 59′31 ″). thrust are. Further the a lifting device 15 cylinders 15A are set to about 1000 kgf / cm ^2.

  The sample cutter 6 is provided with an extruding tool 17 for extruding the sample piece Gs from the cylindrical hole 5A when the sample piece Gs is transferred to the sample receiving means 8. The pusher 17 includes a cylinder 17A1 and a push shaft 17B attached to the lower end of the rod in this example, which is an elevating tool 17A that is fixed to the mounting bracket 16 by a flange. The push shaft 17B is moved downward by the cylinder 17A1. By advancement, the sample piece Gs in the cylinder hole 5A can be pushed out. The cutter holder 14 is provided with a guide guide portion 14A for guiding the push shaft 17B concentrically with the cylindrical hole 5A.

  Next, as shown in FIGS. 6A and 6B, the sample receiving means 8 sucks the sample piece Gs at the sample receiving position P1 immediately below the cylinder hole 5A of the raised punching cutter 5. A vacuum pad 7 is provided for receiving and sending the received sample piece Gs to the sample measuring means 20. The vacuum pad 7 having a well-known structure can be suitably employed, and the sample piece Gs can be adsorbed and held by the pad adsorbing surface at the tip by vacuum suction. The vacuum pad 7 waits for the pusher 17 to operate at the sample receiving position P1 in a state Y1 with the pad suction surface facing upward (sometimes referred to as an upward state Y1).

  Here, when the sample piece Gs is pushed out by the push shaft 17B, the sample piece Gs usually descends while adhering to the lower end surface of the push shaft 17B and can be directly received by the pad suction surface of the vacuum pad 7. However, it is also assumed that the sample piece Gs peels off from the lower end surface of the push shaft 17B and falls by its own weight. However, even in such a case, prior to the pushing operation of the extruding tool 17, it is preferable to start receiving the vacuum suction of the vacuum pad 7 simultaneously with the pushing operation, thereby reliably receiving and holding the sample piece Gs falling by its own weight. Can do.

  As shown in FIGS. 3 and 7, the sample receiving means 8 sets the vacuum pad 7 in the upward state Y1 at the sample receiving position P1, and sets it in the downward state Y2 at the sample delivery position P2 in the sample measuring means 20. It further includes a pad turning tool 21 and a pad moving tool 22 for reciprocating the vacuum pad 7 between two positions of the sample receiving position P1 and the sample delivery position P2.

  The sample measuring means 20 mounts the measuring device 3 having the measuring unit 3A for measuring and inspecting the rubber physical properties and the like of the sample piece Gs and the measuring sample piece Gs attached to the measuring device 3. A sample mounting table 23 is included. In this example, the sample mounting table 23 includes a so-called turntable 23A that rotates intermittently horizontally at a predetermined angle. The turntable 23A is provided with a plurality of sample placement positions Q on one circumference, and each sample placement position Q stops at the sample delivery position P2 for each intermittent rotation. An optical sensor 24A is disposed below the sample delivery position P2 and the turntable 23A, and each sample placement position Q has a plurality of small sensor insertion holes 24B having a diameter of, for example, about 5 mm. Is drilled. Accordingly, when the sample piece Gs has not been delivered to the sample placement position Q at the sample delivery position P2, the optical sensor 24A passes through the sensor insertion hole 24B at the sample delivery position P2. When the sample piece Gs is delivered, the sensor light can be detected by being reflected by the delivered sample piece Gs.

In addition, in this example, the pad moving tool 22 includes a pivotable arm 22A that can reciprocate the vacuum pad 7 between the sample receiving position P1 and the sample delivery position P2 by a rotational movement, and the arm 22A. For example, a rotary driving machine 22B such as an electric rotor reactor is used. The arm 22A is supported so as to be horizontally pivotable around a fulcrum position that is equidistant from the sample receiving position P1 and the sample delivery position P2. Further, the pad turning tool 21 includes a rotary drive machine 21B such as an electric rotor reactor attached to the tip of the arm 22A, and supports the vacuum pad 7 so as to be turnable around a horizontal axis through a pad holder. .

  Therefore, as shown in FIG. 7, the sample receiving means 8 can reciprocate the vacuum pad 7 between the two positions of the sample receiving position P1 and the sample delivery position P2 by the horizontal rotation of the arm 22A. At this time, the operation of the pad moving tool 22 causes the vacuum pad 7 to be in the upward state Y1 at the sample receiving position P1, thereby receiving and holding the sample piece Gs from within the cylindrical hole 5A of the punching cutter 5. it can. In particular, in this example, the upward state Y1 is maintained even during the movement of the vacuum pad 7 due to the horizontal rotation of the arm 22A, thereby ensuring the holding and preventing the sample piece Gs from falling during the movement. When the vacuum pad 7 moves to the sample delivery position P2, the operation of the pad turning tool 21 can change the posture of the vacuum pad 7 from the upward state Y1 to the downward state Y2. Then, in this downward state Y2, by stopping the suction of the vacuum pad 7, the sample piece Gs can be placed and delivered on the turntable 23A at the sample delivery position P2. In this example, the vacuum pad 7 waits at the sample delivery position P2 until the next sampling command is input after the vacuum pad 7 having delivered the sample piece Gs returns to the upward state Y1.

  As described above, by using the sampling apparatus 1 of the present embodiment, the rubber sheet G is passed between the cutter cradle 4 and the punching cutter 5 of the sample cutter tool 6 and the sample piece is lowered by the lowering of the punching cutter 5. Gs can be punched into the cylindrical hole 5A of the punching cutter 5, and the sample piece Gs in the cylindrical hole 5A is adsorbed by the vacuum pad 7 in the upward state Y1 at the sample receiving position P1 directly below the punching cutter 5. It can be conveyed to the sample delivery position P2. The sample piece Gs can be delivered to the measuring device 3 by changing the posture of the vacuum pad 7 to the downward state Y2 at the sample delivery position P2 and stopping the suction of the vacuum pad 7. These series of operations can be carried out automatically, with high reliability, efficiently and frequently, and automatically.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

It is a side view which shows notionally the rubber sheet sampling apparatus used for the rubber sheet sampling test | inspection method of this invention. FIG. 2 is a schematic plan view thereof. FIG. 2 is a perspective view conceptually showing the main part. It is sectional drawing which shows the standby state of a sample cutter tool. It is sectional drawing which shows the punching state by a sample cutter tool. (A), (B) is sectional drawing explaining the state which punches a sample piece and receives to a vacuum pad from a cutter. It is a front view explaining the state which delivers a sample piece to a measuring device by a sample receiving means. It is a perspective view which shows a punching cutter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rubber sheet sampling apparatus 2 Extruder 3 Measuring apparatus 4 Cutter base 4A Protrusion part 5 Punching cutter 5A Tube hole 6 Sample cutter tool 7 Vacuum pad 8 Sample receiving means 17 Extrusion tool 17B Push shaft 20 Sample measuring means 21 Pad turning tool 22 Pad moving tool 22A Arm G Rubber sheet Gs Sample piece P1 Sample receiving position P2 Sample delivery position

Claims (8)

A rubber sheet sampling inspection method in which a sample piece for measurement is periodically collected from a rubber sheet continuously extruded from an extruder, and the rubber of the sample piece is inspected by a measuring device,
While the rubber sheet continuously extruded from the extruder passes through the accumulator zone and is wound by a reel winder,
Between the accumulator zone and the reel winder, the rubber sheet is a cutter cradle, and a punching cutter of a sample cutter tool that is disposed above the cutter cradle and has a cylindrical hole that can be moved up and down. And punching a sample piece from the rubber sheet into the cylindrical hole with the cutter cradle by lowering the punching cutter,
The sample piece in the cylinder hole is adsorbed by the vacuum pad of the sample receiving means and transported to the sample delivery position provided in the sample measuring means at the sample receiving position immediately below the cylindrical hole of the punching cutter lifted by ascending. as well as,
A rubber sheet sampling inspection method, wherein the punching of the sample piece is performed in a state where conveyance of the rubber sheet is stopped while a reel winder is stopped .
  2. The rubber sheet sampling inspection method according to claim 1, wherein the sample piece is transferred to the sample measuring means at a frequency of once every 1 to 6 minutes.   The sample cutter includes an pusher having a push shaft that pushes the sample piece in the cylindrical hole by advancing, and simultaneously performs the push-out operation of the pusher and the vacuum suction at the vacuum pad at the sample receiving position. The rubber sheet sampling inspection method according to claim 1, wherein the rubber sheet sampling inspection method is performed. A rubber sheet sampling system that collects a sample piece for measurement from a rubber sheet continuously extruded from an extruder and delivers it to a measuring device,
An accumulator zone a rubber sheet which is continuously extruded from the extruder passes,
A reel winder that winds the rubber sheet that has passed through the accumulator zone;
A sampling device disposed between the accumulator zone and the reel winder; and
The sampling device comprises:
A cutter cradle in which a rubber sheet continuously extruded from the extruder passes through the upper surface;
The punching cutter is lowered when the rubber sheet is stopped while the reel cutter is stopped, and the punching cutter is disposed above the cutter cradle and has a cylindrical hole that can be moved up and down. A sample cutter tool for punching a sample piece from the rubber sheet into the cylindrical hole between the cutter cradle and lifting the sample piece by lifting,
A sample receiving means having a vacuum pad for sucking and receiving the sample piece and sending it to the sample measuring means at a sample receiving position immediately below the cylinder hole of the raised punching cutter;
The sample receiving means includes a pad swiveling tool for directing the vacuum pad upward at the sample receiving position and downward at the sample measuring means, and the vacuum pad between the sample receiving position and the sample delivery position of the sample measuring means. A rubber sheet sampling system comprising a pad moving tool that reciprocates.
The cutter cradle is provided with a protrusion on the upper surface thereof for projecting a punched sample piece into the cylindrical hole by being positioned in the cylindrical hole of the lowered punching cutter. The rubber sheet sampling system according to claim 4.
6. The rubber sheet sampling system according to claim 4 or 5, wherein the sample cutter includes an pusher having a push shaft for pushing the sample piece in the cylindrical hole by advancement.
The sample cutter includes an pusher having a push shaft that pushes the sample piece in the cylindrical hole by advancing, and simultaneously performs the push-out operation of the pusher and the vacuum suction at the vacuum pad at the sample receiving position. The rubber sheet sampling system according to claim 4, wherein the rubber sheet sampling system is performed .
The said pad moving tool is provided with the pivotable arm which reciprocates by the rotational movement of the said vacuum pad between the said sample receiving position and a sample delivery position, The said any one of Claims 4-7 characterized by the above-mentioned. The rubber sheet sampling system described.

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