JP6450093B2 - Mold cleaning device - Google Patents

Description

  The present invention relates to a mold cleaning apparatus. More particularly, the present invention relates to a tool for cleaning a mold with a laser and a mold cleaning apparatus including the tool.

  A tire is obtained by heating and pressurizing a raw cover (uncrosslinked tire) in a mold. At this time, the rubber composition causes a crosslinking reaction. This crosslinking reaction is accompanied by the formation of by-products. For this reason, when the tire is manufactured, the cavity surface of the mold becomes dirty. If a tire is manufactured with a dirty mold, the appearance quality of the tire may be impaired. For this reason, the mold is periodically cleaned.

  In order to manufacture a tire having a good appearance, a mold cleaning method has been studied. An example of this study is disclosed in Japanese Patent Laid-Open No. 2009-119819.

JP 2009-119819 A

  The mold may be cleaned with a laser. In the cleaning of the mold by this laser, it is necessary to adjust the irradiation position of the laser so that the position where the mold should be cleaned can be irradiated with the laser. This adjustment takes time.

  In the manufacture of tires, the mold is assembled in a container. The mold after the manufacture of the tire is removed from the container and stored.

  In the mold incorporated in the container, a ring-shaped cavity surface is formed. When the mold is removed from the container, the cavity surface is divided for each segment constituting the mold. The state of the cavity surface is different between the mold incorporated in the container and the mold removed from the container and stored. For this reason, the position of the cavity surface with respect to the laser changes between the case of cleaning the cavity surface of the mold incorporated in the container and the case of cleaning the cavity surface of the mold removed from the container and stored. In order to clean the position to be cleaned, it is necessary to adjust the laser irradiation position according to the state of the mold.

  After cleaning the mold incorporated in the container, another mold stored off the container may be cleaned. In this case, since the position of the cavity surface changes, it is necessary to readjust the laser irradiation position. If this adjustment is forgotten, the laser is irradiated at the irradiation position adjusted for the mold incorporated in the container. For this reason, in order to clean another mold that has been removed from the container and stored, it is necessary to incorporate this mold into the container. This work takes time.

  Under the circumstances as described above, there is a demand for the development of a tool for cleaning a mold with a laser that can reduce the load of the mold cleaning operation and can shorten the operation time.

  An object of the present invention is to provide a tool for cleaning a mold with a laser, which can reduce the load of the mold cleaning operation and can shorten the operation time.

  A tool for cleaning a mold according to the present invention with a laser includes a large number of arc-shaped segments, and these segments are arranged by being assembled in a container to form a ring-shaped cavity surface. It is for cleaning with a laser. This tool includes a main body into which the mold is inserted. The body includes an opening for charging the mold, a wall extending downward from the opening, facing the charged mold, supporting the mold, and a floor on which the wall is placed. ing. The cavity surface is formed by putting the mold into the tool.

  Preferably, in the tool for cleaning the mold with a laser, the segment includes a female screw for fixing the segment to the container with a bolt, and the wall includes a hole at a position corresponding to the female screw.

  Preferably, the tool for cleaning the mold with a laser further includes three or more hooks for suspending and transporting the mold with the hoist. Each hook is provided outside the wall.

  The mold cleaning apparatus according to the present invention includes an irradiation means for irradiating a laser and a large number of arc-shaped segments, and these segments are arranged by being incorporated in a container to form a ring-shaped cavity surface. A tool for holding the mold and a stage on which the tool is set are provided. The tool includes a main body into which the mold is inserted. The body includes an opening for charging the mold, a wall extending downward from the opening, facing the charged mold, supporting the mold, and a floor on which the wall is placed. ing. The cavity surface is formed by putting the mold into the tool.

  Preferably, in this mold cleaning apparatus, the segment includes a female screw for fixing the segment to the container with a bolt, and the wall includes a hole at a position corresponding to the female screw.

  Preferably, in this mold cleaning apparatus, the tool further includes three or more hooks for suspending and transporting the mold while the mold is inserted. Each hook is provided outside the wall.

  In the tool for cleaning a mold according to the present invention with a laser, the cavity surface of the mold is configured in the same state as the cavity surface of the mold incorporated in the container. By using this tool, the mold is always cleaned in the same state. Since it is not necessary to readjust the laser irradiation position each time cleaning is performed, the work time for cleaning can be shortened. According to the tool of the present invention, the load of the mold cleaning operation can be reduced, and the operation time can be shortened.

FIG. 1 is a plan view showing a tool for cleaning a mold according to an embodiment of the present invention with a laser. FIG. 2 is a front view of the tool of FIG. FIG. 3 is a perspective view showing a part of a mold to be put into the tool of FIG. FIG. 4 is a plan view showing a usage state of the tool of FIG. FIG. 5 is a cross-sectional view showing a state in which the mold of FIG. 3 is assembled to the tool of FIG. FIG. 6 is a schematic view showing a state in which the mold is cleaned with a laser.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

  A tool 2 is shown in FIGS. This tool 2 is used to clean the mold with a laser. In FIG. 1, the direction indicated by the double arrow A is the circumferential direction of the tool 2. This circumferential direction is also the circumferential direction of the tire. The direction perpendicular to the paper surface is the axial direction of the tool 2. This axial direction is also the axial direction of the tire. In FIG. 2, the vertical direction is the axial direction of the tool 2, the horizontal direction is the radial direction of the tool 2, and the direction perpendicular to the paper surface is the circumferential direction of the tool 2. The mold is for producing a pneumatic tire.

  FIG. 3 shows a segment 6 as a part of the mold 4. In FIG. 3, the X direction is the radial direction of the mold 4. This radial direction is also the radial direction of the tire. The Y direction is the axial direction of the mold 4. This axial direction is also the axial direction of the tire. The circumferential direction of the mold 4 is orthogonal to the X direction and the Y direction. This circumferential direction is also the circumferential direction of the tire.

  The mold 4 includes a plurality of illustrated segments 6. The segment 6 has an arc shape. The segment 6 has a cavity surface 8. When manufacturing the tire, this segment 6 is incorporated into a container (not shown).

  Although not shown, a plurality of segments 6 are arranged in the container. Thereby, the ring-shaped cavity surface 8 is formed. This cavity surface 8 forms the tread of the tire. Thus, the mold 4 having the plurality of segments 6 is called a split mold.

  The mold 4 that has finished manufacturing the tire is removed from the container. The cavity surface 8 of the mold 4 is cleaned using the tool 2 shown in FIGS. The tool 2 includes a main body 10 and a hook 12.

  The mold 4 is put into the main body 10. The main body 10 includes an opening 14, a wall 16, and a floor 18. In this tool 2, the mold 4 is inserted from the opening 14. This opening 14 is for introducing the mold 4. The wall 16 extends downward from the opening 14. The wall 16 is cylindrical. When the mold 4 is put into the main body 10, the wall 16 faces the mold 4 and supports the mold 4. The wall 16 is provided with a plurality of holes 20. These holes 20 are arranged at intervals in the circumferential direction. Each hole 20 passes through the wall 16. The floor 18 is located below the wall 16. The floor 18 is a plate that extends radially inward from the wall 16. On the floor 18, a wall 16 that supports the mold 4 introduced from the opening 14 is placed.

  The hook 12 is attached to the outside of the wall 16. In this tool 2, the hook 12 is fixed to the wall 16 by a coupling means 22. The coupling means 22 is not particularly limited. Conventionally used coupling means 22 is used for this tool 2.

  As shown in FIG. 1, the tool 2 includes three hooks 12. In other words, the tool 2 includes a plurality of hooks 12. These hooks 12 are attached to the wall 16 at equal intervals in the circumferential direction. Although not shown, these hooks 12 are hung from a band extending from a hoist as a transport means. Thereby, the tool 2 is suspended by the hoist. From the viewpoint that the tool 2 can be stably suspended, the number of hooks 12 provided in the tool 2 is preferably three or more.

  FIG. 4 shows the usage state of the tool 2. As shown, nine segments 6 are arranged on the body 10 of the tool 2. Thereby, the ring-shaped mold 4 is comprised.

  As shown in FIG. 5, the segment 6 is supported by a wall 16 located radially outward. In the tool 2, the inner surface shape of the wall 16 corresponds to the outer surface shape of the segment 6.

  As described above, the hole 20 is provided in the wall 16 of the tool 2. On the back surface of the segment 6, a female screw 24 for fixing to the container with a bolt 26 is provided.

  When the segment 6 is fixed to the tool 2, a bolt 26 is passed through the hole 20 in the wall 16. The bolt 26 is passed through the female screw 24 of the segment 6. Bolt 26 is screwed. Thereby, the segment 6 is fixed to the tool 2.

  In this tool 2, the hole 20 in the wall 16 is in a position corresponding to the internal thread 24 of the segment 6. In this tool 2, it is not necessary to provide another female screw on the back surface of the segment 6 in order to fix the segment 6 to the tool 2. In order to fix to a container, the internal thread 24 provided in the back surface of the segment 6 is utilized as it is. In this tool 2, an increase in work cost for mold cleaning is effectively suppressed.

  FIG. 6 shows a cleaning device 28 for cleaning the mold 4 with a laser. The cleaning device 28 includes an irradiation unit 30 and a stage 32. The irradiation means 30 irradiates a laser. This laser burns away dirt adhering to the surface of the cavity surface 8. The above-described tool 2 is set on the stage 32.

  In the cleaning device 28, the tool 2 plays a role of supporting the mold 4. The tool 2 is a part of the cleaning device 28. In other words, the cleaning device 28 includes the tool 2 in addition to the irradiation unit 30 and the stage 32.

  The mold 4 is cleaned using the cleaning device 28 as follows. One segment 6 forming the mold 4 is put into the main body 10 through the opening 14 of the tool 2. Segment 6 is brought into contact with wall 16. A bolt 26 is passed through a female screw 24 on the back of the segment 6 through a hole 20 in the wall 16. The bolt 26 is screwed and the one segment 6 is fixed to the tool 2. This operation is repeated, and the nine segments 6 are fixed to the tool 2. Thereby, the insertion of the mold 4 into the tool 2 is completed.

  Three bands hanging from the hoist are hung on each of the three hooks 12. The hoist is operated, and the tool 2 is suspended from the hoist while the mold 4 is inserted. The tool 2 is transported to the cleaning device 28, and the tool 2 is set on the stage 32. The position of the cavity surface 8 of the mold 4 is specified by the control means (not shown) of the cleaning device 28. Thereby, the irradiation position of the laser is determined. Laser is irradiated from the irradiation means 30 toward the cavity surface 8. Thereby, the mold 4 is cleaned. After cleaning, the tool 2 is taken out. Thereby, the cleaning operation of the mold 4 is completed.

  In the tool 2, the ring-shaped cavity surface 8 is formed in the mold 4 by arranging the nine segments 6. The cavity surface 8 is configured in the same state as the cavity surface 8 of the mold 4 incorporated in the container. For this reason, by using this tool 2, the mold 4 is always cleaned in the same state. Since it is not necessary to readjust the laser irradiation position each time cleaning is performed, the work time for cleaning can be shortened. According to the tool 2 of the present invention, the load of the cleaning operation of the mold 4 can be reduced, and the operation time can be shortened.

  As described above, the tool 2 is provided with a plurality of hooks 12. If an operator hangs three bands hanging from the hoist on each hook 12, the tool 2 is transported by the hoist. This transportation is easy. This hook 12 reduces the load on the operator. In addition, the use of the hook 12 increases work safety.

  In the tool 2, the hook 12 is provided outside the wall 16. The arrangement of the hook 12 does not hinder the cleaning operation by the laser. According to this tool 2, an efficient cleaning operation is achieved.

  The tools described above can also be applied to cleaning various molds.

2 ... Tool 4 ... Mold 6 ... Segment 8 ... Cavity surface 10 ... Body 12 ... Hook 14 ... Opening 16 ... Wall 18 ... Floor 20 ... Hole 24 ... Female screw 26 ... Bolt 28 ... Cleaning device 30 ... Irradiation means 32 ... Stage

Claims (4)

A tool for cleaning with a laser a mold having a large number of arc-shaped segments, which are arranged in a container to form a ring-shaped cavity surface.
The tool separate from the container includes a main body into which the mold is inserted.
The main body includes an opening for charging the mold, a wall extending downward from the opening, facing the charged mold, supporting the mold, and a floor on which the wall is placed. And
The cavity surface of the ring is formed by throwing the mold into this tool,
The cavity surface formed by the mold being put into the tool is formed in the same state as the cavity surface of the mold incorporated in the container ,
It is further equipped with three or more hooks for hanging and transporting on a hoist with the mold being put in,
Each hook is attached to the outside of the wall,
A tool in which the entirety of the hook is provided outside the wall in the radial direction . The segment includes a female screw for bolting to the container;
The tool for cleaning a mold according to claim 1, wherein the wall has a hole at a position corresponding to the female screw. An irradiation means for irradiating a laser, and a tool for holding a mold in which a plurality of arc-shaped segments are arranged in a container to form a ring-shaped cavity surface. With a stage to be set,
The tool separate from the container includes a main body into which the mold is inserted.
The main body includes an opening for charging the mold, a wall extending downward from the opening, facing the charged mold, supporting the mold, and a floor on which the wall is placed. And
The cavity surface of the ring is formed by throwing the mold into this tool,
The cavity surface formed by the mold being put into the tool is formed in the same state as the cavity surface of the mold incorporated in the container ,
It is further equipped with three or more hooks for hanging and transporting on a hoist with the mold being put in,
Each hook is attached to the outside of the wall,
The mold cleaning apparatus , wherein the entire hook is provided outside the wall in the radial direction . The segment includes a female screw for bolting to the container;
The mold cleaning apparatus according to claim 3, wherein the wall has a hole at a position corresponding to the female screw.

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