Mold cleaning brush

Abstract

To provide a brush for cleaning a molding die, which allows a cleaner to easily check surfaces of an upper die and a lower die even when a distance between the upper die and the lower die of the molding die is short.SOLUTION: A brush 1 is used to clean a molding die having an upper and lower die. The brush 1 includes a brush base 10, a mirror 12, and a light-emitting part 13. One ends of a plurality of bristles are connected to one surface of the brush base 10. A mirror 12 is disposed on a surface of the brush base 10. The light-emitting part 13 emits light from the surface of the brush base 10.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a brush for cleaning molds. [Background technology]

[0002] Patent Document 1 discloses a brush for cleaning a mold. In this brush, brush bristles are implanted in the brush body. In the mold, an upper mold is disposed on the upper side, and a lower mold is disposed on the lower side. The brush cleans the lower surface of the upper mold and the upper surface of the lower mold. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-12579 Summary of the Invention [Problem to be solved by the invention]

[0004] A mold cleaner checks the location of dirt on the surface of the upper or lower mold. Next, the cleaner cleans the surface of the upper or lower mold. After cleaning, the cleaner looks at the surface to check whether the dirt has been removed. The cleaner checks the surface of the upper or lower mold when the mold is opened. When the mold is opened and the distance between the upper and lower molds is short, the cleaner cannot directly check the surface of the upper or lower mold. Patent Document 1 does not disclose a method for the cleaner to check the surface of the upper or lower mold when the distance between the upper and lower molds is short.

[0005] Therefore, the present invention aims to provide a brush for cleaning molds that allows a cleaner to easily check the surface of the upper or lower mold even when the distance between the upper and lower molds of the mold is short. [Means for solving the problem]

[0006] A brush for cleaning a molding die according to one embodiment of the present invention is a brush for cleaning a molding die having an upper die and a lower die, and comprises a brush base having one end of a plurality of bristles connected to one surface thereof, a mirror placed on the surface of the brush base, and a light-emitting part that emits light from the surface of the brush base. [Effects of the Invention]

[0007] According to the above aspect, even if the distance between the upper and lower dies of the forming die is short, the cleaner can easily check the surfaces of the upper and lower dies. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a front view of the brush for cleaning the casting mold in the first embodiment. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. 10 is an explanatory diagram of a state in which the storage box is separated from the brush plate. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. 2 is a circuit diagram of a light emitting circuit. [Figure 9] FIG. 1 is an explanatory diagram of resin molding using a molding die. [Figure 10] FIG. 10 is another explanatory view of resin molding using a molding die. [Figure 11] FIG. 10 is a cross-sectional view of the forming mold taken along line AA in FIG. [Figure 12] FIG. 10 is a plan view of a brush for cleaning a casting mold in a second embodiment. [Figure 13] FIG. 13 is a partial cross-sectional view of the brush taken along line BB in FIG. [Figure 14] FIG. 11 is a plan view of a brush for cleaning a casting mold in a third embodiment. [Figure 15] FIG. [Figure 16] FIG. [Figure 17] FIG. 10 is a circuit diagram of a light emitting circuit according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the mold cleaning brush according to the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments, and various modifications are possible without departing from the spirit and scope of the present invention.

[0010] (Embodiment 1) FIG. 1 is a front view of a brush 1 for cleaning a molding die in the first embodiment. FIG. 2 is a plan view of the brush 1. FIG. 3 is a bottom view of the brush 1. As shown in FIGS. 1 to 3, the brush 1 includes a rectangular parallelepiped brush base 10. The brush base 10 extends in one direction. Here, the one direction is the left-right direction in FIGS. 1 to 3. As shown in FIG. 3, the brush base 10 has a bristle placement surface 10a to which one ends of a plurality of bristles 11 are connected. In FIG. 1, the bristle placement surface 10a is one surface on the underside of the brush base 10. The plurality of bristles 11 are bundled together to form bristle bundles 11a. As shown in FIG. 3, the plurality of bristle bundles 11a are arranged in a grid pattern on the bristle placement surface 10a.

[0011] The method of arranging the plurality of hair bundles 11a on the hair arrangement surface 10a is not limited to arranging the plurality of hair bundles 11a in a grid pattern. As a first example, the plurality of hair bundles 11a may be arranged in a circular or elliptical pattern. As a second example, the plurality of hair bundles 11a may be arranged irregularly.

[0012] As shown in FIG. 2, the brush 1 further includes a rectangular mirror 12 and a plurality of light-emitting elements 13. The light-emitting elements 13 are, for example, LEDs (Light Emitting Diodes). The brush base 10 further includes a rectangular mirror mounting surface 10b on which the mirror 12 is mounted, and two rectangular light-emitting surfaces 10c that emit light from the light-emitting elements 13. The mirror mounting surface 10b and the two light-emitting surfaces 10c are surfaces of the brush base 10. The mirror mounting surface 10b and the two light-emitting surfaces 10c are located on the opposite side of the brush base 10 from the bristle mounting surface 10a and face the bristle mounting surface 10a. The mirror mounting surface 10b and the two light-emitting surfaces 10c are located on the upper side in FIG. 1. The mirror mounting surface 10b is adjacent to each of the two light-emitting surfaces 10c and is located between the two light-emitting surfaces 10c. 2, from left to right, the light-emitting surface 10c, the mirror mounting surface 10b, and the light-emitting surface 10c are arranged in this order. The angle formed by the mirror mounting surface 10b and each of the light-emitting surfaces 10c is 0 degrees. The mirror mounting surface 10b and the two light-emitting surfaces 10c are fixed.

[0013] The wide surface of the mirror 12 is arranged on the mirror arrangement surface 10b. On each light-emitting surface 10c, a plurality of first recesses 13a are arranged in a grid pattern. A first opening 13b is provided on the bottom surface of each first recess 13a. The brush base 10 has a hollow rectangular parallelepiped shape. A plurality of light-emitting units 13 are arranged within the brush base 10. At each first opening 13b, a portion of the light-emitting unit 13 is exposed to the outside of the brush base 10 from the bottom surface of the first recess 13a. Each light-emitting unit 13 emits light from the light-emitting surface 10c.

[0014] Each light-emitting surface 10c further has a second recess 13c. The second recess 13c is located at the center of the light-emitting surface 10c in the width direction of the light-emitting surface 10c. The width direction of the light-emitting surface 10c is the up-and-down direction in FIG. 2. A plurality of first recesses 13a are provided on one side of the second recess 13c in the width direction of the light-emitting surface 10c. A plurality of first recesses 13a are provided on the other side of the second recess 13c in the width direction of the light-emitting surface 10c.

[0015] A through-hole 13d (see FIG. 6) penetrating inward and outward is provided in the bottom surface of the second recess 13c. A screw 14 is disposed in the second recess 13c. The head of the screw 14 is located in the second recess 13c. The threaded portion of the screw 14 passes through the through-hole 13d.

[0016] As shown in Figures 1 to 3, the brush base 10 has a rectangular brush plate 20 and a storage box 21 that is a hollow rectangular parallelepiped with one open side. The brush plate 20 and storage box 21 together function as the brush base main body. In Figure 1, the opening of the storage box 21 is located below the storage box 21. The opening of the storage box 21 is closed by the brush plate 20. The brush plate 20 and storage box 21 extend in the one direction mentioned above. As mentioned above, the one direction is the left-right direction in Figure 1.

[0017] The brush plate 20 has the bristle placement surface 10a described above. Therefore, one end of the plurality of bristles 11 is connected to the bristle placement surface 10a of the brush plate 20. A storage box 21 is disposed on the opposite surface of the brush plate 20, which is located opposite the bristle placement surface 10a. In FIG. 1, the opposite surface is located above the bristle placement surface 10a. The opening of the storage box 21 is closed by the opposite surface of the brush plate 20.

[0018] The storage box 21 has the mirror arrangement surface 10b and two light-emitting surfaces 10c described above. The mirror arrangement surface 10b and the two light-emitting surfaces 10c are the surfaces of the storage box 21. Therefore, the mirror 12 is arranged on the surface of the storage box 21. As described above, the mirror arrangement surface 10b and the two light-emitting surfaces 10c face the bristles arrangement surface 10a. The storage box 21 accommodates a plurality of light-emitting units 13. Specifically, the storage box 21 accommodates a circuit board. The circuit board has a light-emitting circuit 3 (see FIG. 8) having a plurality of light-emitting units 13 formed thereon.

[0019] 4 is an explanatory diagram of the state in which the storage box 21 has been separated from the brush plate 20. The storage box 21 is attached to the brush plate 20 by two screws 14. By removing the two screws 14, the storage box 21 can be removed from the brush plate 20, as shown in FIG.

[0020] As described above, the storage box 21 is removably attached to the brush plate 20. The bristles 11 connected to the brush plate 20 are used for cleaning. When a cleaner repeatedly cleans, the bristles 11 wear down and become shorter. When the bristles 11 become shorter, the cleaner can remove the storage box 21 from the brush plate 20. The cleaner can then attach the removed storage box 21 to a new brush plate 20.

[0021] FIG. 5 is a plan view of the brush plate 20. FIG. 5 shows the opposite surface described above. As shown in FIG. 5, two screw holes 20a are provided on the opposite surface of the brush plate 20, which is located opposite the bristle placement surface 10a. The positions of the two screw holes 20a correspond to the two second recesses 13c. Each of the two screw holes 20a is provided with a screw groove. The threaded portion of the screw 14 described above is inserted into each of the two screw holes 20a. The screws 14 are then tightened.

[0022] FIG. 6 is a partial cross-sectional view of the brush 1. As described above, each light-emitting surface 10c has a second recess 13c. The bottom surface of the second recess 13c has a through-hole 13d penetrating inward and outward. The opening area of ​​the through-hole 13d is smaller than the area of ​​the head of the screw 14 but larger than the cross-sectional area of ​​the threaded portion of the screw 14. The threaded portion of the screw 14 passes through the through-hole 13d. When the threaded portion of the screw 14 passes through the through-hole 13d, the head of the screw 14 contacts the periphery of the through-hole 13d on the bottom surface of the second recess 13c. The threaded portion passing through the through-hole 13d is inserted into the screw hole 20a of the brush plate 20. Then, the screw 14 is tightened using a screwdriver. As a result, the storage box 21 is attached to the brush plate 20.

[0023] The screws 14 are loosened with a screwdriver and removed from the screw holes 20a, whereby the containing box 21 can be removed from the brush plate 20.

[0024] Fig. 7 is a side view of the brush 1. Fig. 7 shows one of the two side surfaces of the brush base 10 that face each other in the aforementioned direction (the left-right direction in Fig. 1). As shown in Figs. 1 and 7, the brush plate 20 has third recesses 20b on each of the opposing end faces. This allows the cleaner to easily grip the brush base 10 by inserting their hands into the two third recesses 20b.

[0025] The storage box 21 has two opposing surfaces F that face each other along the aforementioned one direction (the left-right direction in FIG. 2). FIG. 7 shows one of the two opposing surfaces F of the storage box 21. A fourth recess 21a is provided on one of the opposing surfaces F. A slider 15 is disposed in the fourth recess 21a. A cleaner can slide the slider 15 in the fourth recess 21a. In the example of FIG. 7, the slider 15 is located on the left side in the fourth recess 21a. A cleaner can move the slider 15 to the right in FIG. 7. When the slider 15 is located on the right side in FIG. 7, the cleaner can move the slider 15 to the left. The slider 15 corresponds to the operating unit. The movement of the slider 15 performed by the cleaner corresponds to operating the operating unit.

[0026] The shape of the other side surface of the brush base 10 is the same as the shape of the one side surface described above. Therefore, a fourth recess 21a is also provided on the other opposing surface F of the storage box 21, and a slider 15 is disposed in the fourth recess 21a. Therefore, two fourth recesses 21a and two sliders 15 are disposed on the brush 1. On the opposing surface F of the storage box 21 located on the right side in FIG. 2, the fourth recess 21a is located on the upper side. On the opposing surface F of the storage box 21 located on the left side in FIG. 2, the fourth recess 21a is located on the lower side.

[0027] Therefore, even if the brush 1 is rotated so that the left and right opposing surfaces F in FIG. 2 are swapped when the bristle arrangement surface 10a is positioned on the bottom in FIG. 1, the positions of the two sliders 15 do not change. Assume that a cleaner holds the upper and lower side surfaces of the brush 1 in FIG. 2 with their right hand from the top of FIG. 1. In this case, the relative positional relationship between the index finger and the slider 15 remains the same regardless of whether the thumb of the right hand is touching the upper or lower side surface of the brush 1 in FIG. 2. Therefore, the cleaner does not need to consider how to hold the brush 1 when holding it.

[0028] The two opposing surfaces F of the storage box 21 are the surfaces of the brush base 10. Therefore, the brush 1 includes two sliders 15 arranged on the surfaces of the brush base 10.

[0029] FIG. 8 is a circuit diagram of the light-emitting circuit 3. In addition to the plurality of light-emitting units 13, the light-emitting circuit 3 has a DC power supply 30, a first switch 31, and a second switch 32. The first switch 31 and the second switch 32 each have a common terminal 40, a first terminal 41, and a second terminal 42. In the example of FIG. 8, the light-emitting units 13 are light-emitting diodes. In the upper part of FIG. 8, the plurality of light-emitting units 13 lined up in the left-right direction are the plurality of light-emitting units 13 arranged on the left side in FIG. 2. In the lower part of FIG. 8, the plurality of light-emitting units 13 lined up in the left-right direction are the plurality of light-emitting units 13 arranged on the right side in FIG. 2. The DC power supply 30 is, for example, a battery. The battery may be a dry cell battery, a rechargeable battery, or the like.

[0030] In the light-emitting circuit 3, the positive and negative poles of the DC power supply 30 are connected to the positive terminal Tp and the negative terminal Tn, respectively. A cleaner can replace the DC power supply 30 connected between the positive terminal Tp and the negative terminal Tn. The positive terminal Tp is connected to the anode of each of the multiple light-emitting units 13. The cathodes of each of the multiple light-emitting units 13 are connected to a common terminal 40 of a first switch 31. The first terminal 41 and the second terminal 42 of the first switch 31 are connected to the first terminal 41 and the second terminal 42 of the second switch 32, respectively. The common terminal 40 of the second switch 32 is connected to the negative terminal Tn.

[0031] In each of the first switch 31 and the second switch 32, the common terminal 40 is connected to one of the first terminal 41 and the second terminal 42. The first switch 31 and the second switch 32 correspond to the two sliders 15 provided on the brush 1.

[0032] With respect to the first switch 31, when the slider 15 corresponding to the first switch 31 is moved while the common terminal 40 is connected to the first terminal 41, the connection of the common terminal 40 is changed to the second terminal 42. With respect to the first switch 31, when the slider 15 corresponding to the first switch 31 is moved while the common terminal 40 is connected to the second terminal 42, the connection of the common terminal 40 is changed to the first terminal 41.

[0033] Similarly, with respect to the second switch 32, when the slider 15 corresponding to the second switch 32 is moved while the common terminal 40 is connected to the first terminal 41, the connection of the common terminal 40 is changed to the second terminal 42. With respect to the second switch 32, when the slider 15 corresponding to the second switch 32 is moved while the common terminal 40 is connected to the second terminal 42, the connection of the common terminal 40 is changed to the first terminal 41.

[0034] When the common terminal 40 is connected to the first terminal 41 in both the first switch 31 and the second switch 32, current is input from the positive electrode of the DC power supply 30 to the anode of each of the multiple light-emitting units 13. In each of the multiple light-emitting units 13, the current input to the anode is output from the cathode. As a result, current flows from the positive electrode of the DC power supply 30 through each of the multiple light-emitting units 13, causing the multiple light-emitting units 13 to emit light. The current output from the cathodes of the multiple light-emitting units 13 flows in the following order: the common terminal 40 of the first switch 31, the first terminal 41 of the first switch 31, the first terminal 41 of the second switch 32, the common terminal 40 of the second switch 32, and the negative electrode of the DC power supply 30.

[0035] The plurality of light-emitting units 13 also emit light when the common terminal 40 is connected to the second terminal 42 in both the first switch 31 and the second switch 32. When the common terminal 40 is connected to the second terminal 42 in both the first switch 31 and the second switch 32, current is input from the positive electrode of the DC power supply 30 to the anode of each of the plurality of light-emitting units 13. In each of the plurality of light-emitting units 13, the current input to the anode is output from the cathode. As a result, current flows from the positive electrode of the DC power supply 30 through each of the plurality of light-emitting units 13, causing the plurality of light-emitting units 13 to emit light. The current output from the cathodes of the plurality of light-emitting units 13 flows in the following order: the common terminal 40 of the first switch 31, the second terminal 42 of the first switch 31, the second terminal 42 of the second switch 32, the common terminal 40 of the second switch 32, and the negative electrode of the DC power supply 30.

[0036] When the common terminal 40 of one of the first switch 31 and the second switch 32 is connected to the first terminal 41 and the common terminal 40 of the other switch is connected to the second terminal 42, no current flows from the positive electrode of the DC power supply 30 to the plurality of light-emitting units 13. When no current flows through the light-emitting units 13, the light-emitting units 13 stop emitting light.

[0037] As described above, when the slider 15 corresponding to the first switch 31 is moved, the connection destination of the common terminal 40 in the first switch 31 is changed. When the slider 15 corresponding to the second switch 32 is moved, the connection destination of the common terminal 40 in the second switch 32 is changed. Therefore, when one of the two sliders 15 is moved while the multiple light-emitting units 13 are emitting light, the flow of current through the multiple light-emitting units 13 is stopped, and the multiple light-emitting units 13 stop emitting light. When one of the two sliders 15 is moved while the multiple light-emitting units 13 are not emitting light, the current flows through the multiple light-emitting units 13, and the multiple light-emitting units 13 start emitting light. As described above, the cleaner can control the operation of the multiple light-emitting units 13 by moving one of the two sliders 15.

[0038] As described above, a slider 15 is provided on each of the two opposing surfaces F. Therefore, the cleaner does not need to consider how to hold the brush base 10 when gripping the brush 1. As a result, the cleaner can easily control the operation of the multiple light-emitting units 13 regardless of how the brush base 10 is held.

[0039] The brush 1 configured as above is used to clean the molding die 5 (see FIG. 9). The molding die 5 will be described below. The molding die 5 is used to seal one surface of the substrate W (see FIG. 9) with a resin material R (see FIG. 9).

[0040] FIG. 9 is an explanatory diagram of resin molding using a molding die 5. FIG. 9 shows a cross section of the molding die 5 in which a substrate W is placed before being sealed with resin. The molding die 5 shown in FIG. 9 is in a state where the mold has been opened. The molding die 5 has an upper die 50 and a lower die 51. The lower die 51 is placed below the upper die 50. The upper die 50 is rectangular. A cull portion 60 and two cavities 61 are formed on the underside of the upper die 50. The cull portion 60 and the two cavities 61 are each recessed portions recessed upward. On the underside of the upper die 50, the cavity 61, the cull portion 60, and the cavity 61 are lined up in this order from left to right. The cavity 61 on the left side is connected to the cull portion 60 by a runner portion (not shown). The runner portion is a passageway. The cavity 61 on the right side is also connected to the cull portion 60 by a runner portion.

[0041] The lower mold 51 has two cavity blocks 70, a pot block 71, and a plunger 72. Each of the two cavity blocks 70 and the pot block 71 has a rectangular parallelepiped shape. In the lower mold 51, the cavity block 70, the pot block 71, and the cavity block 70 are arranged in this order from left to right. The left and right cavities 61 are located above the left and right cavity blocks 70, respectively. The cull portion 60 is located above the pot block 71.

[0042] A pot 71a extending in the vertical direction is provided inside the pot block 71. The pot 71a is a hole. A plunger 72 is disposed inside the pot 71a. The shape of the top surface of the plunger 72 roughly matches the shape of the opening of the pot 71a. The plunger 72 moves in the vertical direction inside the pot 71a. Before resin molding, a thermosetting tablet-shaped resin material R is disposed inside the pot 71a. The resin material R rests on the top surface of the plunger 72.

[0043] Each of the upper mold 50 and the lower mold 51 has a built-in heater (not shown). The heaters maintain the temperatures of the upper mold 50 and the lower mold 51 at preset temperatures. Therefore, when the tablet-shaped resin material R is poured into the pot 71a, the resin material R starts to melt.

[0044] The heights of the top surfaces of the two cavity blocks 70 are the same. The top surface of the pot block 71 is located slightly higher than the top surfaces of the two cavity blocks 70. A substrate W is disposed on the top surface of each of the two cavity blocks 70. For example, a semiconductor chip is fixed to the top surface of the substrate W. The semiconductor chip is located below the cavity 61.

[0045] Note that "match" does not only have a strict meaning, but also a substantial meaning. Therefore, when the difference in height between the top surfaces of two cavity blocks 70 is within the tolerance range, the heights of the top surfaces of the two cavity blocks 70 match.

[0046] Fig. 10 is another explanatory view of resin molding using the molding die 5. Resin molding using the molding die 5 will be described with reference to Figs. 9 and 10. When sealing the top surface of the substrate W, first, as shown in Fig. 9, the substrates W are placed in each of the two cavity blocks 70, and tablet-shaped resin material R is poured into the pot 71a. The poured resin material R is melted.

[0047] Next, the lower mold 51 is raised to begin mold clamping. As a result, each of the two substrates W is sandwiched between the upper mold 50 and the lower mold 51, and the raising of the lower mold 51 stops. As a result, mold clamping is completed. After mold clamping is completed, the plunger 72 is raised. As a result, the molten resin material R located above the plunger 72 flows into the cull portion 60, the runner portion, and the cavity 61 in that order. With the resin material R filled into the cull portion 60, the runner portion, and the cavity 61, the process waits until a preset curing time has elapsed. As a result, the resin material R hardens, and the portions of the upper surfaces of the two substrates W where the semiconductor chips will be placed are sealed with resin. As a result, resin molding is completed. The molding mold 5 is a molding mold for transfer molding.

[0048] After the resin molding is completed, the lower mold 51 moves downward and the mold is opened. After the mold is opened, the two substrates W sealed with resin are removed from the molding mold 5. Then, the two substrates W before resin molding are placed on the upper surfaces of the two cavity blocks 70. New resin material R in tablet form is poured into the pot 71a, and the resin molding process described above is carried out.

[0049] When resin molding is repeated, the surface of the upper mold 50 that constitutes the cull portion 60 and the two cavities 61 becomes dirty. A cleaner removes the dirt adhering to the surface of the upper mold 50 by rubbing the surface of the upper mold 50 with the multiple bristles 11 of the brush 1.

[0050] FIG. 11 is a cross-sectional view of mold 5 taken along line AA in FIG. 9. As shown in FIG. 11, cavity 61 of upper mold 50 extends in the front-to-rear direction. A cleaner stands in front of mold 5 and uses brush 1 to clean mold 5 after mold opening. After mold opening, the distance between upper mold 50 and lower mold 51 is short, for example, 150 millimeters. For this reason, the cleaner cannot directly visually check for dirt adhering to the underside of upper mold 50.

[0051] An example of a method for cleaning the molding die 5 performed by a cleaner is shown below. The cleaner holds the brush 1 and inserts it into the space between the upper die 50 and the lower die 51, with the light-emitting elements 13 not emitting light. The cleaner then moves one of the two sliders 15 to cause the light-emitting elements 13 to emit light. The cleaner adjusts the position and tilt of the brush 1, thereby directing the light emitted by the light-emitting elements 13 onto the surface of the upper die 50 or the lower die 51.

[0052] Next, the cleaner checks the surface of the upper mold 50 or the lower mold 51 reflected in the mirror 12. The cleaner checks the corners of the recessed cavity 61 in particular. If the cleaner finds dirt, he or she moves one of the two sliders 15 to stop the light emission of the multiple light-emitting elements 13. Thereafter, the cleaner applies multiple bristles 11 to the surface of the upper mold 50 or the lower mold 51 where the dirt is attached, and scrubs the surface with the brush 1.

[0053] Next, the cleaner moves one of the two sliders 15 to cause the multiple light-emitting elements 13 to emit light. After that, the cleaner adjusts the position and inclination of the brush 1 to direct the light emitted by the multiple light-emitting elements 13 onto the scrubbed surface. The cleaner checks whether the dirt has been removed by looking at the surface of the upper mold 50 or lower mold 51 reflected in the mirror 12. If the dirt has not been removed, the cleaner stops the light-emitting elements 13 from emitting light and scrubs the surface with the dirt again with the brush 1.

[0054] When the molds are opened, even if the distance between the upper mold 50 and the lower mold 51 is short, the cleaner can easily check the bottom surface of the upper mold 50 or the top surface of the lower mold 51 by using the mirror 12. Furthermore, by handling the brush base 10, the cleaner can check the bottom surface of the upper mold 50 or the top surface of the lower mold 51 in addition to cleaning the forming mold 5.

[0055] It is preferable that the mirror 12 is made of a material other than glass. The material other than glass is metal or resin, etc. An example of a metal is stainless steel. An example of a resin is polycarbonate. Glass is brittle. If the components making up the mirror 12 contain glass, there is a high possibility that the mirror 12 will break when the brush 1 falls. If the brush 1 falls on the upper surface of the lower mold 51 and the mirror 12 breaks, it is necessary to remove the fragments of the mirror 12 from the molding die 5. For this reason, it is preferable that the mirror 12 is made of a material other than glass.

[0056] Furthermore, it is preferable that mirror 12 be placed inside mirror placement surface 10b. When mirror 12 is placed inside mirror placement surface 10b, mirror 12 is less likely to damage molding die 5. When mirror 12 is placed inside mirror placement surface 10b, mirror 12 is less likely to hit other components, and therefore mirror 12 is less likely to break.

[0057] In the first embodiment, the mold 5 to be cleaned using the brush 1 is not limited to a mold in which the cavity 61 is provided on the lower surface of the upper mold 50 and the upper surface of the cavity block 70 of the lower mold 51 is flat. If the mold 5 is a mold in which a cavity is provided on at least one of the lower surface of the upper mold 50 and the upper surface of the lower mold 51, cleaning can be performed using the brush 1. Furthermore, the mold 5 is not limited to a mold for transfer molding. Even if the mold 5 is a mold for compression molding, cleaning can be performed using the brush 1. Furthermore, the mold 5 is not limited to a mold for molding using a thermosetting resin material R, but may be a mold for molding using a thermoplastic resin.

[0058] (Embodiment 2) In the first embodiment, the angle formed between the mirror mounting surface 10b and the light emitting surface 10c is 0 degrees. However, the angle formed between the mirror mounting surface 10b and the light emitting surface 10c may be greater than 0 degrees. The following describes the differences between embodiment 2 and embodiment 1. Except for the configuration described below, the other configurations are common to embodiment 1. Therefore, components common to embodiment 1 are given the same reference numerals as in embodiment 1, and descriptions of those components will be omitted.

[0059] Fig. 12 is a plan view of a brush 1 for cleaning a casting mold in embodiment 2. Fig. 13 is a partial cross-sectional view of the brush 1 taken along line BB in Fig. 12. In embodiment 2, as shown in Figs. 12 and 13, one long side of the mirror mounting surface 10b is continuous with one side of each of the two light-emitting surfaces 10c. Here, the three continuous sides are located on the upper side in Fig. 12.

[0060] As shown in Figure 13, the other long side of the mirror mounting surface 10b is located closer to the brush plate 20 than the aforementioned one long side. Here, the brush plate 20 side is the lower side in Figure 13. The two light-emitting surfaces 10c are located on the same plane. As a result, the mirror mounting surface 10b is inclined toward the brush plate 20 side relative to each of the two light-emitting surfaces 10c. The entire mirror mounting surface 10b is located closer to the brush plate 20 than the light-emitting surfaces 10c and is fixed.

[0061] Note that the term "coplanar" not only has a strict meaning but also a practical meaning. Therefore, even if there is a step between the two light-emitting surfaces 10c, the two light-emitting surfaces 10c are on the same plane as long as the length of the step is within the tolerance range.

[0062] The angle formed between the mirror mounting surface 10b and each of the two light-emitting surfaces 10c is greater than 0 degrees and less than 90 degrees. Therefore, the angle formed between the mirror mounting surface 10b and each of the two light-emitting surfaces 10c is an acute angle. It is preferable that the angle formed between the mirror mounting surface 10b and each of the two light-emitting surfaces 10c is 45 degrees or close to 45 degrees.

[0063] As described above, the mirror placement surface 10b is inclined relative to each of the light-emitting surfaces 10c. Therefore, when a cleaner checks the mirror 12, the light emitted from the light-emitting surface 10c is unlikely to directly enter the cleaner's eyes. Since almost all of the light emitted from the light-emitting surface 10c hits the surface of the upper mold 50 or the lower mold 51, the area of ​​the surface of the upper mold 50 or the lower mold 51 that is hit by the light is large. As a result, the cleaner can easily check the lower surface of the upper mold 50 or the upper surface of the lower mold 51. The mold cleaning brush 1 in the second embodiment achieves the same effects as the mold cleaning brush 1 in the first embodiment.

[0064] (Embodiment 3) In the first embodiment, the mirror mounting surface 10b is fixed. However, the brush 1 may be configured such that the mirror mounting surface 10b is movable. The following describes the differences between embodiment 3 and embodiment 1. Except for the configuration described below, the configuration is the same as embodiment 1. Therefore, the components that are the same as those in embodiment 1 are given the same reference numerals as in embodiment 1, and the description of those components will be omitted.

[0065] Fig. 14 is a plan view of brush 1 for cleaning a casting mold in embodiment 3. Fig. 15 is a side view of brush 1. As shown in Figs. 14 and 15, storage box 21 is provided with a rectangular fifth recess 21b that is recessed toward brush plate 20. In Fig. 14, fifth recess 21b is located between two light-emitting surfaces 10c.

[0066] In the brush base 10 of embodiment 3, a rectangular rotating plate 7 is placed in the fifth recess 21b. The rotating plate 7 is attached to the storage box 21. The wide surface of the rotating plate 7 functions as the rectangular mirror placement surface 10b. As described in embodiment 1, a mirror 12 is placed on the mirror placement surface 10b. When the rotating plate 7 is placed in the fifth recess 21b, the long side of the mirror placement surface 10b is aligned with the arrangement direction of the two light-emitting surfaces 10c, i.e., the left-right direction in Figure 14. The mirror placement surface 10b is the upper surface in Figure 15. Each of the two sides of the rotating plate 7 is aligned with the arrangement direction of the two light-emitting surfaces 10c.

[0067] FIG. 16 is an explanatory diagram of the rotating plate 7. A cleaner can rotate the rotating plate 7 around an axis of one side of the rotating plate 7 that is aligned in the direction in which the two light-emitting surfaces 10c are arranged. For example, two cylinders (not shown) protrude from each of the two end faces of the rotating plate 7 along the aforementioned side. In FIG. 15, one cylinder protrudes leftward from the left end face, and the other cylinder protrudes rightward from the right end face. In the storage box 21, a left-side recess (not shown) recessed to the left is formed on the left side surface of the fifth recess 21b, and a right-side recess (not shown) recessed to the right is formed on the right side surface of the fifth recess 21b. The cylinder protruding from the left end face is housed in the left-side recess. The cylinder protruding from the right end face is housed in the right-side recess. This allows the rotating plate 7 to be rotatably attached to the storage box 21.

[0068] The structure for rotatably attaching the rotary plate 7 to the container box 21 is not limited to the structure in which two cylinders, a left recess, and a right recess are provided.

[0069] With the mold cleaning brush 1 of the third embodiment configured as described above, a cleaner can adjust the position of the mirror 12 by rotating the rotating plate 7. The mold cleaning brush 1 of the third embodiment achieves the same effects as the mold cleaning brush 1 of the first embodiment.

[0070] The one direction described in the description of the first embodiment is the left-right direction in FIG. 14. On the light-emitting surface 10c, the direction perpendicular to the left-right direction in FIG. 14 is the up-down direction in FIG. 14. In the third embodiment, as shown in FIG. 15, two fourth recesses 21a are provided on each of two opposing surfaces that face each other in the up-down direction in FIG. 14. As described in the description of the first embodiment, a slider 15 is disposed in each fourth recess 21a. One slider 15 is located on the right side of the opposing surface located on the lower side in FIG. 14. The other slider 15 is located on the left side of the opposing surface located on the upper side in FIG. 14.

[0071] Therefore, even if the brush 1 is rotated so that the left and right opposing surfaces F in FIG. 14 are swapped when the bristle-arrangement surface 10a is positioned on the bottom in FIG. 15, the positions of the two sliders 15 do not change. Assume that a cleaner grasps the upper and lower side surfaces of the brush 1 in FIG. 14 with their right hands from the top of FIG. 15. In this case, the relative positional relationship between the index finger and the slider 15 remains the same regardless of whether the thumb of the right hand is touching the upper or lower side surface of the brush 1 in FIG. 2. Therefore, the cleaner does not need to consider how to hold the brush 1 when grasping it.

[0072] In the third embodiment, the axis of the rotating plate 7 is not limited to a part of one side along the arrangement direction of the two light-emitting surfaces 10c, and may be, for example, a part of one side along a direction perpendicular to the arrangement direction. In each of the first and second embodiments, the two fourth recesses 21a and the two sliders 15 may be arranged in the same manner as in the third embodiment.

[0073] In the first to third embodiments, the number of the fourth recess 21a and the slider 15 may be one. In this case, the light-emitting circuit 3 shown in FIG. 8 does not need to have the second switch 32. In the light-emitting circuit 3, the first terminal 41 is connected to the negative terminal Tn. The second terminal 42 is open. When the common terminal 40 is connected to the first terminal 41, the plurality of light-emitting units 13 emit light. When the common terminal 40 is connected to the second terminal 42, the plurality of light-emitting units 13 stop emitting light. When the slider 15 is moved, the connection of the common terminal 40 in the first switch 31 is changed. By moving the slider 15, the cleaner can control the operation of the plurality of light-emitting units 13.

[0074] (Fourth embodiment) The light-emitting circuit 3 in the first embodiment is configured using a switch having three terminals. However, the configuration of the light-emitting circuit 3 is not limited to a configuration using a switch having three terminals. The following describes the differences between embodiment 4 and embodiment 1. Except for the configuration described below, the configuration is the same as embodiment 1. Therefore, the components that are the same as those in embodiment 1 are given the same reference numerals as in embodiment 1, and the description of those components will be omitted.

[0075] In the mold cleaning brush 1 in the fourth embodiment, the number of each of the fourth recesses 21a and the sliders 15 may be one, or two or more. Here, the operation of the light-emitting circuit 3 when the number of each of the fourth recesses 21a and the sliders 15 is two or more will be described.

[0076] Fig. 17 is a circuit diagram of a light-emitting circuit 3 according to embodiment 4. Like the light-emitting circuit 3 according to embodiment 1, the light-emitting circuit 3 according to embodiment 4 has a plurality of light-emitting units 13 and a DC power supply 30. In the example of Fig. 17, the light-emitting units 13 are also light-emitting diodes. In the light-emitting circuit 3 according to embodiment 4, like in embodiment 1, the positive and negative electrodes of the DC power supply 30 are detachably connected to the positive terminal Tp and the negative terminal Tn, respectively. The positive terminal Tp is connected to the anodes of the plurality of light-emitting units 13.

[0077] The light-emitting circuit 3 in embodiment 4 further includes a circuit switch 80 and a switching circuit 81. The circuit switch 80 has two terminals. The anodes of the multiple light-emitting units 13 are connected to one terminal of the circuit switch 80. The other terminal of the circuit switch 80 is connected to the negative terminal Tn. When the circuit switch 80 is on, as described in the description of embodiment 1, current flows from the positive electrode of the DC power supply 30 to the multiple light-emitting units 13, causing the multiple light-emitting units 13 to emit light. When the circuit switch 80 is off, as described in the description of embodiment 1, current stops flowing from the positive electrode of the DC power supply 30 to the multiple light-emitting units 13, causing the multiple light-emitting units 13 to stop emitting light.

[0078] When each of the plurality of sliders 15 is moved, a movement signal indicating the movement of the slider 15 is input to the switching circuit 81. The switching circuit 81 receives a plurality of movement signals corresponding to the plurality of sliders 15, respectively.

[0079] The brush 1 is provided with, for example, a plurality of sensors (not shown) corresponding to the plurality of sliders 15. Each sensor outputs a movement signal to the switching circuit 81 when the slider 15 corresponding to that sensor moves.

[0080] When the circuit switch 80 is in an off state and a movement signal corresponding to one of the plurality of sliders 15 is input, the switching circuit 81 switches the circuit switch 80 on. As a result, the state of the plurality of light-emitting units 13 switches from a state in which light emission is stopped to a state in which light emission is stopped. When the circuit switch 80 is in an on state and a movement signal corresponding to one of the plurality of sliders 15 is input, the switching circuit 81 switches the circuit switch 80 off. As a result, the state of the plurality of light-emitting units 13 switches from a state in which light emission is stopped to a state in which light emission is stopped.

[0081] When the number of fourth recesses 21a and sliders 15 is two, two fourth recesses 21a are arranged on each of two opposing surfaces F corresponding to the aforementioned one direction (the left-right direction in FIG. 2), or two fourth recesses 21a are arranged on each of two opposing surfaces opposing in a direction perpendicular to the aforementioned one direction (the up-down direction in FIG. 2). When the number of fourth recesses 21a and sliders 15 is three, for example, three fourth recesses 21a are arranged on each of three of the aforementioned four opposing surfaces. When the number of fourth recesses 21a and sliders 15 is four, for example, four fourth recesses 21a are arranged on each of the aforementioned four opposing surfaces. As described above, a slider 15 is arranged in each fourth recess 21a.

[0082] In the case where the number of fourth recesses 21a and sliders 15 is one, when a movement signal is input while the circuit switch 80 is off, the switching circuit 81 switches the circuit switch 80 on. In a similar case, when a movement signal is input while the circuit switch 80 is on, the switching circuit 81 switches the circuit switch 80 off. The fourth recess 21a is provided, for example, on one of the four opposing surfaces described above.

[0083] The light emitting circuit 3 in each of the second and third embodiments may be configured similarly to the light emitting circuit 3 in the fourth embodiment.

[0084] In the first to fourth embodiments, the location where the fourth recess 21a is arranged is not limited to any one of the four opposing surfaces described above. The fourth recess 21a may be arranged, for example, on the mirror mounting surface 10b or the light-emitting surface 10c. The number of light-emitting surfaces 10c is not limited to two, but may be one or three or more. When the number of light-emitting surfaces 10c is one, the mirror mounting surface 10b is adjacent to the rectangular light-emitting surface 10c. The shape of the light-emitting surface 10c is not limited to a rectangular shape. The light-emitting surface 10c may be annular. In this case, the mirror mounting surface 10b is arranged inside the light-emitting surface 10c.

[0085] The shape of the mirror-mounted surface 10b is not limited to a rectangular shape. Furthermore, one of the bristle-mounted surface 10a, the mirror-mounted surface 10b, and the light-emitting surface 10c may be located near one or both of the remaining two surfaces. For example, the bristle-mounted surface 10a, the mirror-mounted surface 10b, and the light-emitting surface 10c may be located on one surface of the brush plate 20 located at the bottom of Figure 1.

[0086] The operating unit operated by the cleaner to control the operation of one or more light-emitting units 13 is not limited to the slider 15, and may be, for example, a button. In the case where multiple buttons are provided, when any of the multiple buttons is pressed, the multiple light-emitting units 13 emit light or stop emitting light.

[0087] The number of light-emitting units 13 may be one. Furthermore, the light-emitting unit 13 is not limited to an LED, but may be an incandescent bulb, a laser diode, or the like. The shapes of the mirror mounting surface 10b and the light-emitting surface 10c are not limited to a rectangular shape, but may be, for example, a trapezoid. The surface of the mirror 12 may be a convex curved surface. In this case, the mirror mounting surface 10b is also a curved surface. Furthermore, the number of screws 14 used to attach the storage box 21 to the brush plate 20 is not limited to two, but may be one, three, or more. Depending on the number of screws 14, second recesses 13c, through holes 13d, and screw holes 20a are provided. The number of second recesses 13c, through holes 13d, and screw holes 20a is the same as the number of screws 14.

[0088] The following provides an overview of the brush 1 disclosed herein.

[0089] (1) The brush 1 for cleaning a molding die of the present disclosure is a brush for cleaning a molding die 5 having an upper die 50 and a lower die 51, and comprises a brush base 10 having one end of a plurality of bristles 11 connected to one surface thereof, a mirror 12 placed on the surface of the brush base 10, and a light-emitting part 13 that emits light from the surface of the brush base 10.

[0090] According to the brush 1 for cleaning the molding die described in (1) above, the lower surface of the upper die 50 or the upper surface of the lower die 51 is cleaned using a plurality of bristles 11 connected to the brush base 10. After cleaning the molding die 5, the cleaner illuminates the lower surface of the upper die 50 or the upper surface of the lower die 51 with light from the light emitting unit 13 and checks the lower surface of the upper die 50 or the upper surface of the lower die 51 reflected in the mirror 12. Therefore, even when the gap between the upper die 50 and the lower die 51 is short after the molds are opened, the cleaner can easily check the lower surface of the upper die 50 or the upper surface of the lower die 51 using the mirror 12. Furthermore, by manipulating the brush base 10, the cleaner can check the lower surface of the upper die 50 or the upper surface of the lower die 51 in addition to cleaning the molding die 5.

[0091] (2) In the brush 1 for cleaning a molding mold described in (1) above, the brush base 10 has a brush plate 20 to one side of which one end of the plurality of bristles 11 is connected, and a storage box 21 arranged on the other side of the brush plate 20 and storing the light-emitting unit 13, and the mirror 12 is arranged on the surface of the storage box 21, and the storage box 21 may be removably attached to the brush plate 20.

[0092] According to the brush 1 for cleaning the molding die described in (2) above, when the plurality of bristles 11 connected to the brush plate 20 become worn and short, the storage box 21 can be removed from the brush plate 20 and the removed storage box 21 can be attached to a new brush plate 20.

[0093] (3) In the mold cleaning brush 1 described in (2) above, the brush plate 20 may be provided with recesses (third recesses) 20b on each of two opposing end faces.

[0094] According to the mold cleaning brush 1 described in (3) above, two recesses 20b are provided on the brush plate 20. This allows the cleaner to easily grip the brush base 10 by inserting his or her hands into the two recesses 20b.

[0095] (4) The brush 1 for cleaning a molding die described in any one of (1) to (3) above has a plurality of operating units (sliders) 15 arranged on the surface of the brush base 10, and when any of the plurality of operating units 15 is operated while the light-emitting unit 13 is emitting light, the light-emitting unit 13 may stop emitting light, and when any of the plurality of operating units 15 is operated while the light-emitting unit 13 is not emitting light, the light-emitting unit 13 may emit light.

[0096] According to the brush 1 for cleaning a molding die described in (4) above, the cleaner can control the operation of the light emitting unit 13 by operating one of the plurality of operating units 15.

[0097] (5) In the brush 1 for cleaning a mold described in (4) above, the brush base 10 may have two opposing surfaces F facing each other, and the operating unit 15 may be arranged on each of the two opposing surfaces F.

[0098] According to the brush 1 for cleaning a casting mold described in (5) above, an operating unit (slider) 15 is disposed on each of the two opposing surfaces F. This allows the cleaner to easily control the operation of the light emitting unit 13 regardless of how the brush base 10 is held.

[0099] (6) In the brush 1 for cleaning a mold described in any one of (1) to (5) above, the brush base 10 has a mirror mounting surface 10b on which the mirror 12 is arranged, and an emitting surface 10c adjacent to the mirror mounting surface 10b that emits light from the light-emitting section 13, and the angle formed between the mirror mounting surface 10b and the emitting surface 10c may be an acute angle.

[0100] According to the brush 1 for cleaning the molding die described in (6) above, the mirror mounting surface 10b is inclined relative to the light-emitting surface 10c. Therefore, when a cleaner checks the mirror 12, the light emitted from the light-emitting surface 10c is unlikely to directly enter the cleaner's eyes. Since almost all of the light emitted from the light-emitting surface 10c hits the surface of the upper die 50 or the lower die 51, the area of ​​the surface of the upper die 50 or the lower die 51 that is hit by the light is large. As a result, the cleaner can easily check the lower surface of the upper die 50 or the upper surface of the lower die 51.

[0101] (7) In the brush 1 for cleaning a mold described in (6) above, the mirror mounting surface 10b and the light emitting surface 10c may be rectangular, and one side of the mirror mounting surface 10b may be continuous with one side of the light emitting surface 10c.

[0102] According to the mold cleaning brush 1 described in (7) above, the entire mirror placement surface 10b is located, for example, closer to the brush plate 20 than the light emitting surface 10c.

[0103] (8) In the mold cleaning brush 1 described in (1) to (5) above, the brush base 10 has the brush base main body and a rectangular rotating plate 7 attached to the brush base main body so as to be rotatable around one side of the rotating plate 7, and the mirror may be disposed on one surface of the rotating plate 7. As described above, the brush plate 20 and the storage box 21 as a whole function as the brush base main body.

[0104] According to the mold cleaning brush 1 described in (8) above, the cleaner can adjust the position of the mirror 12 by rotating the rotary plate 7. [Explanation of symbols]

[0105] 1 brush 5 Molding mold 7 Rotating Plate 10 Brush stand 10b Mirror placement surface 10c Light-emitting surface 11 Hair material 12 mirror 13 Light-emitting part 15 Slider (operation part) 20 Brush plate (part of the brush holder body) 20b Third recess 21 Storage box (part of the brush stand body) 50 upper mold 51 Lower mold F Opposing surface

Claims

1. A brush for cleaning a molding die having an upper die and a lower die, a brush base having one end of a plurality of bristles connected to one surface; a mirror disposed on the surface of the brush base; a light-emitting portion that emits light from the surface of the brush base; Equipped with The brush base is a brush plate having one surface to which one ends of the plurality of bristles are connected; a storage box disposed on the other surface of the brush plate and accommodating the light emitting unit; and the mirror is disposed on a surface of the container; The storage box is removably attached to the brush plate. Brush for cleaning molds.

2. The brush plate has recesses on two opposing end surfaces. The mold cleaning brush according to claim 1.

3. A brush for cleaning a molding die having an upper die and a lower die, a brush base having one end of a plurality of bristles connected to one surface; a mirror disposed on the surface of the brush base; a light emitting unit that emits light from the surface of the brush base; a plurality of operating units arranged on the surface of the brush base; Equipped with When any one of the plurality of operation units is operated while the light emitting unit is emitting light, the light emitting unit stops emitting light, When any one of the plurality of operation units is operated while the light emitting unit is stopped from emitting light, the light emitting unit emits light. Brush for cleaning molds.

4. The brush base has two opposing surfaces facing each other, The operation unit is disposed on each of the two opposing surfaces. The mold cleaning brush according to claim 3.

5. A brush for cleaning a molding die having an upper die and a lower die, a brush base having one end of a plurality of bristles connected to one surface; a mirror disposed on the surface of the brush base; a light-emitting portion that emits light from the surface of the brush base; Equipped with The brush base is a mirror placement surface on which the mirror is placed; a light emitting surface adjacent to the mirror arrangement surface and emitting light from the light emitting unit; and The angle formed between the mirror placement surface and the light emitting surface is an acute angle. Brush for cleaning molds.

6. the mirror arrangement surface and the light emitting surface are rectangular, One side of the mirror arrangement surface is continuous with one side of the light emitting surface. The mold cleaning brush according to claim 5.

7. A brush for cleaning a molding die having an upper die and a lower die, a brush base having one end of a plurality of bristles connected to one surface; a mirror disposed on the surface of the brush base; a light-emitting portion that emits light from the surface of the brush base; Equipped with The brush base is The brush base body; a rotating plate having a rectangular shape and attached to the brush base body so as to be rotatable around an axis with one side of the rotating plate as an axis; and The mirror is disposed on one surface of the rotating plate. Brush for cleaning molds.

Images