Mixing and melting apparatus

Abstract

[Problem] To provide a mixing and melting apparatus capable of adjusting the amount of fluid in a mixing container. [Solution] A mixing and melting apparatus 1 comprises: a motor 8 which generates driving force; a rotary shaft 5 which is rotated by the motor 8; a spiral supply screw 12 which is formed on the outer periphery on one side in the axial direction of the rotary shaft 5; a plurality of blade members 10 which are formed on the outer periphery on the other side in the axial direction of the rotary shaft 5; a material input part 14 into which a material is input; a mixing container 3 which is connected to a lower part of the material input part 14, has the rotary shaft 5 penetrate therethrough, and crushes, mixes, and melts the material input into the material input part 14; and a fluid supply part 30 for supplying a fluid to the material input part 14 or the mixing container 3.

Description

Mixing and Melting Equipment

[0001] The present invention relates to a mixing and melting device for mixing and melting materials.

[0002] In recent years, the concentration of carbon dioxide in the atmosphere has increased, and climate change such as global warming has become a problem. In order to suppress environmental abnormalities such as global warming and reduce the use of fossil resources that are at risk of depletion, the use of biomass, a renewable resource that effectively utilizes biotechnology, has been promoted. Regarding the production of biomass materials, a technology has been disclosed for forming a wood-based composite resin material from a wood-based filler material, a lubricant, a thermoplastic resin raw material, and an oxygen modifier (see Patent Document 1).

[0003] Patent No. 4598194

[0004] The mixing and grinding apparatus described in Patent Document 1 does not disclose any adjustment of the amount of fluid inside the mixing vessel. Therefore, adding water before fusion requires adding it to the materials before feeding, which can lead to problems such as the material adhering to the feeding path during feeding. Furthermore, water cannot be added after fusion, and the fused materials cannot be cooled before being discharged. This results in poor discharge of the fused materials and residual fusion agent in the fusion furnace, which increases the frequency of cleaning and reduces operational efficiency.

[0005] Furthermore, in the mixing and grinding device described in Patent Document 1, the outer peripheral portion of the blade member is thicker than the inner peripheral portion, allowing for efficient grinding, mixing, and melting. However, the blade member described in Patent Document 1 may experience severe wear depending on the fusion material used. Because the blade member has an integrated structure, repairing or replacing the worn blade member requires removing the entire shaft, which is costly and time-consuming. Furthermore, wear of the blade member can cause fluctuations in the grinding, mixing, and melting conditions, as well as shear and frictional heat generation conditions, which can reduce reproducibility during mass production and limit productivity improvements. Furthermore, to suppress wear of the blade member, the materials used must be limited.

[0006] In view of the above-mentioned problems, an object of the present invention is to provide a mixing and melting device that can adjust the amount of fluid in a mixing container.

[0007] In view of the above-mentioned problems, another object of the present invention is to provide a mixing and melting device that can efficiently use blade members.

[0008] The mixing and melting device of this embodiment includes: a motor that generates a driving force; a rotating shaft that is rotated by the motor; a spiral supply screw formed on the outer periphery of one side in the axial direction of the rotating shaft; a plurality of blade members formed on the outer periphery of the other side in the axial direction of the rotating shaft; a material input section into which materials are input; a mixing vessel that is connected below the material input section, through which the rotating shaft passes, and that crushes, mixes, and melts the materials input into the material input section; and a fluid supply section that supplies a fluid to the material input section or the mixing vessel.

[0009] The mixing and melting device of this embodiment includes: a motor that generates a driving force; a rotating shaft that is rotated by the motor; a spiral supply screw formed on the outer periphery of one side in the axial direction of the rotating shaft; a plurality of blade members formed on the outer periphery of the other side in the axial direction of the rotating shaft; a material input section into which materials are input; a mixing vessel that is connected below the material input section, through which the rotating shaft passes, and that crushes, mixes, and melts the materials input into the material input section; and a fluid supply section that supplies a fluid to the material input section or the mixing vessel.

[0010] According to the mixing and melting apparatus of the present invention, the amount of fluid in the mixing vessel can be adjusted.

[0011] Furthermore, according to the mixing and melting device of the present invention, the blade members can be used efficiently.

[0012] 1 shows a front view of the mixing melting device of this embodiment; FIG. 2 shows a partially enlarged view of a rotary blade shaft in the mixing melting device of this embodiment; FIG. 3 shows a skeleton block diagram of the entire system of the mixing melting device of this embodiment; FIG. 4 shows a front view of the fluid supply structure of the mixing melting device of the first embodiment; FIG. 5 shows a side view of the fluid supply structure of the mixing melting device of the first embodiment; FIG. 6 shows a front view of the fluid supply structure of the mixing melting device of the second embodiment; FIG. 7 shows a front view of the fluid supply structure of the mixing melting device of the third embodiment; FIG. 8 shows a side view of the fluid supply structure of the mixing melting device of the third embodiment; FIG. 9 shows a three-view diagram of the blade member of the mixing melting device of the fourth embodiment; FIG. 10 shows an assembly diagram of the blade member of the mixing melting device of the fourth embodiment; FIG. 11 shows a four-view diagram of the blade member of the mixing melting device of the fifth embodiment; FIG. 12 shows an assembly diagram of the blade member of the mixing melting device of the fifth embodiment; FIG. 13 shows a four-view diagram of the blade member of the mixing melting device of the sixth embodiment; FIG. 14 shows an assembly diagram of the blade member of the mixing melting device of the sixth embodiment.

[0013] The mixing and melting apparatus of this embodiment will be specifically described with reference to the drawings.

[0014] Fig. 1 is a front view showing a mixing melting apparatus 1 according to an embodiment of the present invention. Fig. 2 is a partially enlarged view showing a blade member 10 and a supply screw 12 in the mixing melting apparatus 1 according to this embodiment. Fig. 3 is a skeleton block diagram showing the entire system of the mixing melting apparatus 1 according to this embodiment. In this embodiment, as shown in Fig. 2, the rotation direction of the rotating shaft 5 is defined as rotation direction A, with the tip of the arrow in rotation direction A representing the front side and the rear end representing the rear side. Furthermore, the direction from upstream to downstream of the rotating shaft 5 is defined as rotation axis direction B, with upstream and downstream being directions in which the material moves, with the tip of arrow B in rotation axis direction B representing the downstream side and the rear end representing the upstream side.

[0015] The mixing and melting apparatus 1 of this embodiment includes a machine base 2, a cylindrical mixing container 3 arranged horizontally on the machine base 2, a motor 8 as a drive source installed on the machine base 2, a rotary shaft 5 driven to rotate by the motor 8, a plurality of blade members 10 disposed on the rotary shaft 5 inside the mixing container 3, a material charging section 14 for charging materials, and a supply screw 12 for supplying the materials charged to the material charging section 14 to the mixing container 3. The material charging section 14 has an upper hopper 14a and a material inlet section 14b located below the hopper 14a and sandwiching an opening / closing section 15 therebetween.

[0016] The motor 8 is driven by a power source (not shown). The motor 8 transmits driving force to the rotating shaft 5, which rotates the blade member 10 and the supply screw 12 via the rotating shaft 5. The motor 8 can control the rotation speed so that the peripheral speed of the tip of the blade member 10 is within a range of 5 m / s to 50 m / s. The output shaft of the motor 8 and the rotating shaft 5 are connected by a V-belt 7, which can slip to prevent a sudden change in load torque from being transmitted to the motor 8 when the load torque suddenly changes on the rotating shaft 5. The output shaft of the motor 8 and the rotating shaft 5 may be connected via a brake, a clutch, or the like. The rotating shaft 5 may also be formed coaxially with the output shaft of the motor 8.

[0017] The rotating shaft 5 is supported horizontally by bearings 4, 4, and is inserted coaxially through the center of the mixing vessel 3. One end of the rotating shaft 5 is in rotational communication with a motor 8 serving as a drive source via a pulley 6 and a V-belt 7. The rotating shaft 5 is hollow, with a small diameter hole formed in the axial center for supplying cooling water, and rotary joints 9 are provided on both ends thereof, so that cooling water is supplied axially into the interior of the rotating shaft 5 through the rotary joints 9.

[0018] As shown in Fig. 2, a total of six blade members 10a to 10f, each rectangular in cross section and having an overall rectangular shape, are provided on the outer periphery of the rotating shaft 5, projecting from the shaft at angular intervals of 180 degrees in the circumferential direction of the rotating shaft 5. As shown in Fig. 2, the thickness of the blade members 10a to 10f is made thicker in approximately 40% of the outer periphery than in the inner periphery, allowing for effective mixing, crushing, and melting of materials. It is also possible to form the outer periphery of the blade member 10 not thick, and to form the inner and outer periphery with the same width and thickness.

[0019] The blade members 10a and 10f at both ends in the axial direction are fixed to the outer periphery of the rotating shaft 5 at an inclination of about 15 degrees from the tip to the base of the blade member 10 so that their leading edges come into sliding contact with the inner surfaces of the vertical walls 11, 11 at both ends of the mixing vessel 3 with almost no gap when rotating in the clockwise rotation direction A when viewed from the right side of Figure 2.

[0020] The four blade members 10b, 10c, 10d, and 10e in the middle section are fixed to the outer circumferential surface of the rotating shaft 5 in a staggered pattern, tilted from the tip to the base of each blade, and are arranged so that their leading edges face both ends of the mixing vessel 3 during rotation. That is, as shown in Figure 2, the four blade members 10b, 10d, 10c, and 10e are opposed to each other in the axial direction and are arranged on the rotating shaft 5 at an attachment angle (angle with respect to the circumferential direction) of 15 degrees so that the opposing spacing between them narrows in the rotation direction.

[0021] In addition, in the direction of the rotating shaft 5, the side of the mixing vessel 3 facing the motor 8 is the material supply section 3a, and the side opposite the motor 8 is the material mixing section 3b. A spiral supply screw 12 formed on the outer periphery of the rotating shaft 5 is housed within the material supply section 3a. The material supply section 3a surrounds the supply screw 12. A material input section 14 is provided above the material supply section 3a. After the material is input into the material input section 14, an open / close section 15 is provided that can be closed airtightly during mixing, grinding, and melting. In addition, a pair of balance wheels 16 are installed on both sides of the blade member 10 and the supply screw 12 of the rotating shaft 5 to ensure smooth rotation.

[0022] The material mixing section 3b surrounds the blade members 10 fixed to the rotary shaft 5. The material mixing section 3b has the material supply section 3a on the upstream side. The material fed into the material supply section 3a is moved to the material mixing section 3b by a supply screw 12 within the material supply section 3a. The material is mixed in the material mixing section 3b by the blade members 10. It is also possible to feed the material from above the material mixing section 3b without using the material supply section 3a and the supply screw 12.

[0023] As shown in Figure 3, continuous water passages 24 are formed in the peripheral wall of mixing vessel 3 and in the center of rotating shaft 5, and a cooling section 22 is constructed that can cool the peripheral wall of mixing vessel 3 and rotating shaft 5 by circulating cooling water. In cooling section 22, water is cooled by a cooling tower 23, and the cooled water cools mixing vessel 3, rotating shaft 5, etc., and returns to cooling tower 23.

[0024] A discharge port lid 17 for removing the molten material is provided on the bottom wall of the mixing vessel 3. The discharge port lid 17 is rotatably supported by a shaft 18, which is connected to rotary cylinders 19, 19 so as to be able to open and close.

[0025] The collars 20, 20 on both sides shown in Figure 2 are for sending air into the mixing vessel 3, and the continuous grooves on each end are made up of right-handed and left-handed spiral grooves so that air is sent to the mixing vessel 3 by the rotation of the rotating shaft 5.

[0026] The control panel 21 is also connected to the motor 8 via a connection cable, and receives a continuous electrical signal representing the load torque of the main shaft from the motor 8. The control panel 21 may control the timing of opening and closing the discharge port lid 17 of the mixing vessel 3 based on changes in the load torque acting on the main shaft of the motor 8 according to the mixed and ground and drying state of the material in the mixing vessel 3, thereby removing the mixed and ground material.

[0027] A method for producing a fused material using the mixing and melting device 1 of this embodiment will be described. The user places the material inside the mixing container 3 of the mixing and melting device 1 through an opening (not shown), drives the motor 8, and rotates the rotating shaft 5, the blade member 10, and the feed screw 12 to finely grind the material. The size of the ground particles is preferably about 2 to 7 mm. Note that the grinding step is not performed when the material is simply fed after being ground in another device.

[0028] Subsequently, the motor 8 is driven to rotate the rotary shaft 5, the blade member 10, and the feed screw 12, thereby mixing the pulverized material. The rotation speed of the rotary shaft 5 is preferably set to 500 rpm or more.

[0029] Furthermore, in the production of the fused material of this embodiment, additives for compatibilization, etc., are not required. The elimination of the use of additives, etc., improves environmental friendliness. Furthermore, in this embodiment, it is preferable to supply a fluid to the material using the fluid supply unit 30. Supplying a fluid can increase the internal pressure in a later process. The fluid may be supplied to the mixing container 3 in advance, or may be supplied to the mixing container 3 during operation. Here, the fluid used may be air, tap water, cold water, warm water, or hot water. Therefore, the mixing and melting apparatus 1 of this embodiment can appropriately adjust the pressure, temperature, humidity, etc., within the mixing container 3. Furthermore, for example, when air or tap water is used, the apparatus can be operated at low cost; when cold water is used, the mixing container 3 can be cooled; and when warm water or hot water is used, the mixing container 3 can be warmed.

[0030] Next, the motor 8 is driven to rotate the rotating shaft 5, the blade member 10, and the supply screw 12. When the blade member 10 is rotated at high speed, the temperature inside the mixing vessel 3 rises to 100°C or higher due to the movement of the materials themselves and the friction caused by the materials colliding and shearing. After that, steam is generated from the fluid, which applies pressure inside the mixing vessel 3, causing the materials to melt.

[0031] Next, the motor 8 is driven to rotate the rotating shaft 5, the blade member 10, and the supply screw 12, thereby promoting the reaction of the materials. As the reaction progresses, the materials are integrated. At the same time, the fluid is vaporized and released to the outside from an outlet (not shown) of the mixing vessel 3. Therefore, the inside of the mixing vessel 3 dries, and a fusion product is obtained from which moisture and the like have been removed.

[0032] The resulting fusion product is a new material in which multiple materials with different melting points are uniformly fused at the molecular level, and since it can be molded by injection, extrusion, blowing, pressing, etc., it can be used for a variety of purposes.

[0033] Furthermore, the method for producing a fusion material of this embodiment is performed in less than 1,800 seconds. Typically, the greater the heat input to a material, the more severe the deterioration. The method for producing a fusion material of this embodiment does not require external heat input, and the time required for heat to be applied to the material is short. Therefore, the fusion material produced by the method for producing a fusion material of this embodiment is less susceptible to deterioration and can maintain its strength. Furthermore, since the fusion material produced by the method for producing a fusion material of this embodiment is less susceptible to deterioration, the completed fusion product can be reused.

[0034] Next, the fluid supply unit 30 of this embodiment will be described.

[0035] Fig. 4 shows a front view of the fluid supply unit 30 of the mixing and melting device 1 of the first embodiment. Fig. 5 shows a side view of the fluid supply unit 30 of the mixing and melting device 1 of the first embodiment.

[0036] The fluid supply unit 30 of the first embodiment is connected to the material input unit 14 of the mixing and melting apparatus 1. The fluid supply unit 30 has a supply pipe 31, a flow rate control unit 32 installed midway along the supply pipe 31, and a fluid supply member 33 installed at the tip of the supply pipe 31.

[0037] The supply pipe 31 is a pipe through which a fluid flows, such as air, tap water, cold water, warm water, hot water, or cooling water cooled in the cooling tower 23 shown in Fig. 3. The amount of fluid flowing through the supply pipe 31 is adjusted by a flow rate control unit 32. The flow rate control unit 32 is installed midway through the supply pipe 31, and may control the flow rate of the fluid passing through the supply pipe 31 by adjusting, for example, the rotation angle of a valve.

[0038] The fluid supply member 33 in the first embodiment is installed in a hole 14b1 formed in the material inlet portion 14b. In the mixing and melting apparatus 1, at least one hole 14b1 is formed in the material inlet portion 14b, and the fluid supply member 33 is installed in the hole 14b1. A plurality of holes 14b1 may be formed in the material inlet portion 14b, and a plurality of fluid supply members 33 may be installed in the hole 14b1. A plurality of holes 14b1 may be formed in the hopper 14a.

[0039] The fluid supply member 33 of this embodiment has a plurality of holes 14b1 formed below the material inlet section 14b, two of which are arranged horizontally, and a fluid supply member 33 is installed in each of the plurality of holes 14b1. The number of holes 14b1 may be two or more. The plurality of holes 14b1 may also be arranged vertically or diagonally. Furthermore, the lines connecting the plurality of holes 14b1 without intersecting each other may form a square, rectangle, trapezoid, or regular polygon. Furthermore, when the plurality of holes 14b1 form a shape, it is preferable that the rotation axis 5 is located at the center.

[0040] The fluid supply member 33 may be a nozzle or shower that sprays the fluid directly or as a mist. Fluid such as air, tap water, cold water, warm water, hot water, or cooling water flowing through the supply pipe 31 is sprayed from the fluid supply member 33 into the material inlet 14b of the material input section 14. The sprayed fluid is supplied from the material inlet 14b to the material supply section 3a and mixed with the material. The fluid may be supplied to the material inlet 14b in advance, or may be supplied to the material inlet 14b during operation. While at least one of the multiple fluid supply members 33 may be in operation, it is preferable to have all of the multiple fluid supply members 33 in operation to prevent uneven supply.

[0041] The mixing and melting apparatus 1 of this embodiment further includes a cooling section 22 that cools the mixing vessel 3 by circulating cooling water, and the cooling section 22 has a water passage 24 formed continuously in the peripheral wall of the mixing vessel 3, and the water passage 24 communicates with the supply pipe 31, and uses cooling water as a fluid. Therefore, the mixing and melting apparatus 1 of this embodiment can appropriately adjust the temperature inside the mixing vessel 3.

[0042] In this way, by supplying a fluid to the material inlet portion 14b using the fluid supply member 33, the amount of fluid in the mixing container 3 can be adjusted before, during, and after the materials are fused. For example, a fluid such as water can be added to the materials before melting, thereby increasing the internal pressure in a later process. It can also cool the mixing container 3 after melting. Furthermore, the appropriate amount of fluid added for each material to be fused can be automatically controlled and managed, enabling quantitative mass production. Furthermore, since a fluid such as water can be added after the materials are added, and the materials are added in a dry state, there is less chance of improper addition.

[0043] Furthermore, by spraying mist from the fluid supply member 33 before melting, the fluid can be uniformly dispersed on the material before melting. This allows the fluid to be uniformly applied to the entire fusion material, allowing for uniform heat transfer during fusion and cooling. Furthermore, after fusion, a high-strength product with uniform physical properties can be obtained. During cooling, the fused material can be rapidly cooled, mitigating thermal degradation of the material.

[0044] FIG. 6 shows a front view of the fluid supply section 30 of the mixing and melting apparatus 1 of the second embodiment.

[0045] The fluid supply unit 30 of the second embodiment is connected to the material supply unit 3a of the mixing and melting apparatus 1. The fluid supply unit 30 has a supply pipe 31, a flow rate control unit 32 installed midway along the supply pipe 31, and a fluid supply member 33 installed at the tip of the supply pipe 31.

[0046] The supply pipe 31 is a pipe through which a fluid flows, such as air, tap water, cold water, warm water, hot water, or cooling water cooled in the cooling tower 23 shown in Fig. 3. The amount of fluid flowing through the supply pipe 31 is adjusted by a flow rate control unit 32. The flow rate control unit 32 is installed midway through the supply pipe 31, and may control the flow rate of the fluid passing through the supply pipe 31 by adjusting, for example, the rotation angle of a valve.

[0047] The fluid supply member 33 of the second embodiment is installed in a hole 3a1 formed in the material supply section 3a. In the mixing and melting apparatus 1, at least one hole 3a1 is formed in the material supply section 3a and a fluid supply member 33 is installed therein. A plurality of holes 3a1 may be formed in the material supply section 3a and a plurality of fluid supply members 33 may be installed therein.

[0048] In the second embodiment, two sets of holes 3a1 are formed vertically, one above the material supply unit 3a and one below, and a fluid supply member 33 is installed in each of the holes 3a1. The number of holes 3a1 may be two or more. The holes 3a1 may also be arranged horizontally or diagonally. Furthermore, the lines connecting the holes 3a1 without intersecting each other may form a square, rectangle, trapezoid, or regular polygon. When the holes 13b1 form a shape, it is preferable that the rotation axis 5 is located at the center.

[0049] The fluid supply member 33 may be a nozzle or shower that sprays the fluid directly or as a mist. The fluid, such as air, tap water, cold water, warm water, hot water, or cooling water, that flows through the supply pipe 31 is sprayed from the fluid supply member 33 into the material supply unit 3a. The sprayed fluid is supplied to the material supply unit 3a and mixed with the material. The fluid may be supplied to the material supply unit 3a in advance, or may be supplied to the material supply unit 3a during operation. Note that it is sufficient for at least one of the multiple fluid supply members 33 to be in operation, but it is preferable for all of the multiple fluid supply members 33 to be in operation to avoid uneven supply.

[0050] The mixing and melting apparatus 1 of this embodiment further includes a cooling section 22 that cools the mixing vessel 3 by circulating cooling water, and the cooling section 22 has a water passage 24 formed continuously in the peripheral wall of the mixing vessel 3, and the water passage 24 communicates with the supply pipe 31, and uses cooling water as a fluid. Therefore, the mixing and melting apparatus 1 of this embodiment can appropriately adjust the temperature inside the mixing vessel 3.

[0051] In this way, by supplying fluid to the material supply section 3a using the fluid supply member 33, the amount of fluid in the mixing container 3 can be adjusted before, during, and after the materials are fused. For example, a fluid such as water can be added to the materials before melting, thereby increasing the internal pressure in a later process. It can also cool the mixing container 3 after melting. Furthermore, the appropriate amount of fluid added for each material to be fused can be automatically controlled and managed, enabling quantitative mass production. Furthermore, since the fluid can be added after the materials are added, and the materials are added in a dry state, there is less chance of improper addition.

[0052] Furthermore, by spraying mist from the fluid supply member 33 before melting, the fluid can be uniformly dispersed on the material before melting. This allows the fluid to be uniformly applied to the entire fusion material, allowing for uniform heat transfer during fusion and cooling. Furthermore, after fusion, a high-strength product with uniform physical properties can be obtained. During cooling, the fused material can be rapidly cooled, mitigating thermal degradation of the material.

[0053] Fig. 7 shows a front view of the fluid supply section 30 of the mixing and melting device 1 of the third embodiment. Fig. 8 shows a side view of the fluid supply section 30 of the mixing and melting device 1 of the third embodiment.

[0054] The fluid supply unit 30 of the third embodiment is connected to the blade member 10 side of the mixing vessel 3 of the mixing and melting apparatus 1. The fluid supply unit 30 has a supply pipe 31, a flow rate control unit 32 installed midway along the supply pipe 31, and a fluid supply member 33 installed at the tip of the supply pipe 31.

[0055] The supply pipe 31 is a pipe through which a fluid flows, such as air, tap water, cold water, warm water, hot water, or cooling water cooled in the cooling tower 23 shown in Fig. 3. The amount of fluid flowing through the supply pipe 31 is adjusted by a flow rate control unit 32. The flow rate control unit 32 is installed midway through the supply pipe 31, and may control the flow rate of the fluid passing through the supply pipe 31 by adjusting, for example, the rotation angle of a valve.

[0056] The fluid supply member 33 of the third embodiment is installed in a hole 3b1 formed in the material mixing section 3b. In the mixing and melting apparatus 1, at least one hole 3b1 is formed in the material mixing section 3b and a fluid supply member 33 is installed therein. A plurality of holes 3b1 may be formed in the material mixing section 3b and a plurality of fluid supply members 33 may be installed therein.

[0057] In the third embodiment, the plurality of holes 3b1 are arranged two above and two below the material mixing section 3b, with the lines connecting them forming a square, and a fluid supply member 33 is installed in each of the plurality of holes 3b1. The number of the plurality of holes 3b1 may be two or more. The plurality of holes 3b1 may also be arranged vertically, horizontally, or diagonally. Furthermore, the lines connecting the plurality of holes 3b1 without intersecting each other may form a square, rectangle, trapezoid, or regular polygon. When the plurality of holes 3b1 form a shape, it is preferable that the rotation axis 5 is located at the center.

[0058] The fluid supply member 33 may be a nozzle or shower that sprays the fluid directly or as a mist. A fluid such as air, tap water, cold water, warm water, hot water, or cooling water that has flowed through the supply pipe 31 is sprayed from the fluid supply member 33 into the mixing container 3. The sprayed fluid is supplied to the mixing container 3 and mixed with the materials. The fluid may be supplied to the mixing container 3 in advance, or may be supplied to the mixing container 3 during operation. It is sufficient that at least one of the multiple fluid supply members 33 is operating, but it is preferable that all of the multiple fluid supply members 33 are operating to avoid uneven supply.

[0059] The mixing and melting apparatus 1 of this embodiment further includes a cooling section 22 that cools the mixing vessel 3 by circulating cooling water, and the cooling section 22 has a water passage 24 formed continuously in the peripheral wall of the mixing vessel 3, and the water passage 24 communicates with the supply pipe 31, and uses cooling water as a fluid. Therefore, the mixing and melting apparatus 1 of this embodiment can appropriately adjust the temperature inside the mixing vessel 3.

[0060] In this way, by supplying fluid to the material mixing section 3b using the fluid supply member 33, the amount of fluid in the mixing container 3 can be adjusted before, during, and after the materials are fused. For example, a fluid such as water can be added to the materials before melting, thereby increasing the internal pressure in a later process. It can also cool the inside of the mixing container 3 after melting. Furthermore, the appropriate amount of fluid added for each material to be fused can be automatically controlled and managed, enabling quantitative mass production. Furthermore, since the fluid can be added after the materials are added, and the materials are added in a dry state, there is less chance of improper addition.

[0061] Furthermore, by spraying mist from the fluid supply member 33 before melting, the fluid can be uniformly dispersed on the material before melting. This allows the fluid to be uniformly applied to the entire fusion material, allowing for uniform heat transfer during fusion and cooling. Furthermore, after fusion, a high-strength product with uniform physical properties can be obtained. During cooling, the fused material can be rapidly cooled, mitigating thermal degradation of the material.

[0062] The fluid supply members 33 of the first to third embodiments may adjust either the temperature or the flow rate of the sprayed fluid based on either the ambient temperature or the type of material in a temperature adjustment unit and flow rate control unit 32 (not shown). The fluid supply members 33 of the first to third embodiments may also be used in various combinations. For example, the mixing and melting apparatus 1 may be installed with a combination of the fluid supply members 33 of the first and second embodiments, the fluid supply members 33 of the second and third embodiments, the fluid supply members 33 of the first and third embodiments, and the fluid supply members 33 of the first to third embodiments.

[0063] As described above, the mixing and melting device 1 of this embodiment includes a motor 8 that generates a driving force, a rotating shaft 5 that is rotated by the motor 8, a spiral supply screw 12 formed on the outer periphery of one side in the axial direction of the rotating shaft 5, a plurality of blade members 10 formed on the outer periphery of the other side in the axial direction of the rotating shaft 5, a material input section 14 into which material is input, a mixing container 3 that is connected below the material input section 14, through which the rotating shaft 5 passes, and which crushes, mixes, and melts the material input into the material input section 14, and a fluid supply section 30 that supplies fluid to the material input section 14 or the mixing container 3.

[0064] Therefore, the mixing and melting apparatus 1 of this embodiment can adjust the amount of fluid in the mixing vessel 3 at any time before, during, and after the materials are fused. For example, it is possible to automatically control and manage the appropriate amount of fluid added for each material to be fused, enabling quantitative mass production. In addition, since the fluid can be added after the materials are charged, and the materials are charged in a dry state, charging errors are less likely to occur.

[0065] In the mixing and melting apparatus 1 of this embodiment, the fluid supply unit 30 has a supply pipe 31 and a fluid supply member 33 that is installed at the tip of the supply pipe 31 and supplies the fluid. Therefore, the mixing and melting apparatus 1 of this embodiment can appropriately adjust the amount of fluid in the mixing container 3.

[0066] Furthermore, in the mixing and melting apparatus 1 of this embodiment, the fluid supply unit 30 has a plurality of fluid supply members 33. Therefore, the mixing and melting apparatus 1 of this embodiment can more appropriately adjust the amount of water in the mixing container 3.

[0067] Furthermore, in the mixing and melting apparatus 1 of this embodiment, the fluid supply member 33 is a nozzle or shower that sprays a mist of fluid. Therefore, the mixing and melting apparatus 1 of this embodiment can uniformly spray the fluid onto the materials in the mixing container 3. As a result, the fluid is evenly applied to the entire fusion material, allowing for uniform heat transfer during fusion and cooling. Furthermore, after fusion, a product with uniform physical properties and high strength can be obtained. During cooling, the fused material can be rapidly cooled, thereby mitigating thermal degradation of the material.

[0068] Furthermore, in the mixing and melting apparatus 1 of this embodiment, the fluid supply unit 30 further includes a flow rate control unit 32 that is installed in the middle of the supply pipe 31 and adjusts the flow rate of the fluid. Therefore, the mixing and melting apparatus 1 of this embodiment can more appropriately adjust the amount of fluid in the mixing vessel 3.

[0069] The mixing and melting apparatus 1 of this embodiment further includes a cooling section 22 that cools the mixing vessel 3 by circulating cooling water, and the cooling section 22 has a water passage 24 formed continuously in the peripheral wall of the mixing vessel 3, and the water passage 24 communicates with the supply pipe 31, and uses cooling water as a fluid. Therefore, the mixing and melting apparatus 1 of this embodiment can appropriately adjust the temperature inside the mixing vessel 3.

[0070] Furthermore, the mixing and melting apparatus 1 of this embodiment uses air, tap water, cold water, warm water, or hot water as the fluid. Therefore, the mixing and melting apparatus 1 of this embodiment can appropriately adjust the pressure, temperature, humidity, and the like inside the mixing vessel 3. Furthermore, for example, when air or tap water is used, the apparatus can be operated at low cost, when cold water is used, the inside of the mixing vessel 3 can be cooled, and when warm water or hot water is used, the inside of the mixing vessel 3 can be warmed.

[0071] Next, the blade member 10 of this embodiment will be described. In the following description of the blade member 10 of this embodiment, for ease of understanding, the rotation direction A and the rotation axis direction B are defined as shown in the drawings. However, in reality, the blade member 10 is inclined with respect to the rotation direction A and the rotation axis direction B, as shown in FIG. 2 .

[0072] Figure 9 shows three views of the blade member 10 of the mixing and melting device 1 of the fourth embodiment. Figure 9(a) is a view from the opposite side of the rotation axis direction B, Figure 9(b) is a view from the left side of Figure 9(a), and Figure 9(c) is a view from the left side of Figure 9(a). Figure 10 shows an assembly diagram of the blade member 10 of the mixing and melting device 1 of the fourth embodiment.

[0073] The blade member 10 of the fourth embodiment has a blade base 100 arranged on the rotating shaft 5, a blade tip 101 that is removably attached to the blade base 100, and a bolt 102 as a retaining part that attaches the blade tip 101 to the blade base 100.

[0074] The blade base 100 is fixed to the rotary shaft 5 by welding or the like. A guide portion 100a having a concave T-shape in a cross section perpendicular to the rotary shaft 5 is formed on the front side (right side of the paper in FIG. 9( a)) of the tip of the blade base 100 in the direction of rotation A. The portion of the guide portion 100a that abuts the upper horizontal bar of the T is formed on the rotary shaft 5 side. A first screw hole 100b is formed on the rear side (left side of the paper in FIG. 9( a)) of the guide portion 100a in the direction of rotation A. The first screw hole 100b has an enlarged diameter hole portion 100b1 that receives the head 102a of the bolt 102.

[0075] The blade tip portion 101 is removably attached to the tip of the blade base 100 on the side opposite to the rotation shaft 5. The blade tip portion 101 includes a tip portion body 101a that comes into contact with the material, and a protrusion 101b that is guided by a guide portion 100a when being removed from the blade base 100. The tip portion body 101a is shaped like a rectangular parallelepiped and is wider in the direction of rotation A than the blade base 100, and is thicker in the direction of the rotation axis B. The protrusion 101b protrudes from the tip portion body 101a in a T-shape in a cross section perpendicular to the rotation shaft 5. A second screw hole 101b1 is formed on the rear side of the protrusion 101b in the direction of rotation A.

[0076] In the blade member 10 of the fourth embodiment, as shown in Figure 10, the blade tip portion 101 is attached to the blade base 100. First, the user inserts the protruding portion 101b of the blade tip portion 101 into the guide portion 100a of the blade base 100. Next, the user moves the blade tip portion 101 in the direction of arrow C. The protruding portion 101b is fitted into the wall portion 100a1 in which the first screw hole 100b of the guide portion 100a is formed. Next, the user screws the bolt 102 into the first screw hole 100b and the second screw hole 101b1 from the direction of arrow D.

[0077] In the blade member 10 of the fourth embodiment, the blade tip portion 101 is removed from the blade base 100 by moving it in the opposite direction of arrow C in Figure 10. First, the user removes the bolt 102 from the first screw hole 100b and the second screw hole 101b1 in the opposite direction of arrow D. Next, the user moves the blade tip portion 101 in the opposite direction of arrow C to remove the protruding portion 101b of the blade tip portion 101 from the guide portion 100a of the blade base 100.

[0078] As described above, the blade member 10 of the fourth embodiment has a structure in which the blade tip portion 101 is detachable from the blade base portion 100, so there is no need to remove the entire shaft when repairing or replacing wear, which saves cost and time. Also, by quickly replacing the blade member 10, the mixing and melting device 1 does not experience fluctuations in the conditions of pulverization, mixing, and melting, or the conditions for generating shear and frictional heat, and there is no decrease in reproducibility during mass production. Furthermore, there is no need to limit the materials used to suppress wear of the blade member 10.

[0079] Fig. 11 shows four views of the blade member 10 of the mixing and melting device 1 of the fifth embodiment. Fig. 11(a) is a view from the opposite side of the rotation axis direction B, Fig. 11(b) is a view from the left side of Fig. 11(a), Fig. 11(c) is a view from the left side of Fig. 11(a), and Fig. 11(d) is a view from the tip side of the blade member. Fig. 12 shows an assembly diagram of the blade member 10 of the mixing and melting device 1 of the fifth embodiment.

[0080] The blade member 10 of the fifth embodiment has a blade base 100 arranged on the rotating shaft 5, a blade tip 101 that is removably attached to the blade base 100, and a bolt 102 as a retaining part that attaches the blade tip 101 to the blade base 100.

[0081] The blade base 100 is fixed to the rotating shaft 5 by welding or the like. A notch is formed on the front side of the tip of the blade base 100 in the direction of rotation A (the right side of the paper in Figure 11 (a)). A guide portion 100a is formed in the blade base 100 on the rotating shaft 5 side of the notch, which has a T-shaped concave shape in a cross section perpendicular to the rotating shaft 5. The guide portion 100a has a portion that abuts the upper horizontal bar of the T on the rotating shaft 5 side. Furthermore, a fitting recess 100c is formed in the blade base 100 on the rear side of the notch in the direction of rotation A. The fitting recess 100c may be a rectangular parallelepiped hole. A first screw hole 100b is formed on the tip side of the fitting recess 100c. The first screw hole 100b penetrates from the tip of the blade base 100 to the fitting recess 100c, and has an enlarged diameter hole portion 100b1 at the tip for accommodating the head 102a of the bolt 102.

[0082] The blade tip portion 101 is removably attached to a notch formed on the front side of the blade base 100 in the direction of rotation A, opposite the rotation shaft 5. The blade tip portion 101 includes a tip portion body 101a that contacts the material, a protrusion 101b that is guided by a guide portion 100a when removing it from the blade base 100, and a fitting protrusion 101c that is fitted into a fitting recess 100c when removing it from the blade base 100. The tip portion body 101a has a rectangular parallelepiped shape and is formed flush with the blade base 100. Note that the tip portion body 101a may protrude forward and backward from the blade base 100 in the direction of rotation A, and may have a greater thickness in the direction of rotation axis B. The protrusion 101b protrudes from the tip portion body 101a toward the rotation shaft 5 in a T-shape in a cross section perpendicular to the rotation shaft 5. A second screw hole 101c1 is formed on the tip side of the fitting protrusion 101c.

[0083] In the blade member 10 of the fifth embodiment, as shown in Figure 12, the blade tip portion 101 is attached to the blade base 100. First, the user inserts the protruding portion 101b of the blade tip portion 101 into the guide portion 100a of the blade base 100. Next, the user moves the blade tip portion 101 in the direction of arrow E. When the protruding portion 101b is guided by the guide portion 100A, the fitting convex portion 101c fits into the fitting concave portion 100c. Next, the user screws the bolt 102 into the first screw hole 100b and the second screw hole 101c1 from the direction of arrow F.

[0084] In the blade member 10 of the fifth embodiment, the blade tip portion 101 is removed from the blade base 100 by moving it in the direction opposite to the arrow in Figure 12. First, the user moves the bolt 102 in the direction opposite to the arrow F to remove it from the first screw hole 100b and the second screw hole 101c1. Next, the user moves the blade tip portion 101 in the direction opposite to the arrow E to remove the protruding portion 101b of the blade tip portion 101 from the guide portion 100a of the blade base 100.

[0085] As described above, the blade member 10 of the fifth embodiment has a structure in which the blade tip portion 101 is detachable from the blade base portion 100, eliminating the need to remove the entire shaft when repairing or replacing wear, thereby saving costs and time. Furthermore, by forming the replaceable blade tip portion 101 into a small size, costs and time during replacement can be further reduced. Furthermore, by quickly replacing the blade member 10, the mixing and melting device 1 does not experience fluctuations in the conditions of pulverization, mixing, and melting, or the conditions for generating shear and frictional heat, and there is no decrease in reproducibility during mass production. Furthermore, there is no need to limit the materials used to suppress wear on the blade member 10.

[0086] Figure 13 shows four views of the blade member 10 of the mixing and melting device 1 of the sixth embodiment. Figure 13(a) is a view from the opposite side of the rotation axis direction B, Figure 13(b) is a view from the left side of Figure 13(a), Figure 13(c) is a view from the left side of Figure 13(a), and Figure 13(d) is a view from the tip side of the blade member. Figure 14 shows an assembly diagram of the blade member 10 of the mixing and melting device 1 of the sixth embodiment.

[0087] The blade member 10 of the sixth embodiment has a blade base 100 arranged on the rotating shaft 5, a blade tip 101 that is removably attached to the blade base 100, and a bolt 102 as a retaining part that attaches the blade tip 101 to the blade base 100.

[0088] The blade base 100 is fixed to the rotating shaft 5 by welding or the like. A notch is formed in the front side of the tip of the blade base 100 in the rotation direction A (right side of the paper in FIG. 13( a) ) and downstream side and tip side in the rotation axis direction B. A guide portion 100a is formed in the blade base 100 on the rear side of the notch in the rotation axis direction B, and has a trapezoidal concave shape in a cross section parallel to the rotation axis direction B. A part of the guide portion 100a that corresponds to the base of the trapezoid is formed on the rear side of the rotation axis direction B. A first screw hole 100b is formed in at least one of the blade base 100 on the rear side of the notch in the rotation axis direction B and the rear side of the guide portion 100a in the rotation axis direction B (right side of the paper in FIG. 13( c) ).

[0089] The blade tip section 101 is removably attached to the front side of the blade base 100 in the rotation direction A (the right side of the paper in FIG. 13( a) ), on the opposite side from the rotation shaft 5, and downstream side and tip of the rotation shaft direction B. The blade tip section 101 includes a tip section body 101a that contacts the material, a trapezoid-shaped protrusion 101b that is guided by the guide section 100a when being removed from the blade base 100, and a tip protrusion 101d that protrudes in an L-shape from the tip of the tip section body 101a. The tip section body 101a is formed as a flat rectangular parallelepiped. The protrusion 101b protrudes in a trapezoid shape from the tip section body 101a. The tip protrusion 101d is formed as a plate-like rectangular parallelepiped and protrudes from the tip of the tip section body 101a in the same direction as the protrusion 101b. A second screw hole 101a1 is formed in the tip section body 101a and the protrusion 101b. The second screw hole 101 a 1 has an enlarged diameter hole portion 101 a 2 that accommodates the head 102 a of the bolt 102 .

[0090] In the blade member 10 of the sixth embodiment, as shown in Figure 14, the blade tip portion 101 is attached to the blade base 100. First, the user inserts the protruding portion 101b of the blade tip portion 101 into the guide portion 100a of the blade base 100. Next, the user moves the blade tip portion 101 in the direction of arrow G. The protruding portion 101b is fitted until it abuts against the wall portion 100a1 of the guide portion 100a. Next, the user screws the bolt 102 into the second screw hole 101b1 and the first screw hole 100b from the direction of arrow H.

[0091] In the blade member 10 of the sixth embodiment, the blade tip portion 101 is removed from the blade base 100 by moving it in the direction opposite to the arrow in Figure 14. First, the user removes the bolt 102 from the first screw hole 100b and the second screw hole 101b1 in the direction opposite to the arrow H. Next, the user moves the blade tip portion 101 in the direction opposite to the arrow G, and removes the protruding portion 101b of the blade tip portion 101 from the guide portion 100a of the blade base 100.

[0092] As described above, the blade member 10 of the sixth embodiment has a structure in which the blade tip portion 101 is detachable from the blade base portion 100, eliminating the need to remove the entire shaft when repairing or replacing wear, thereby saving costs and time. Furthermore, forming the replaceable blade tip portion 101 small further reduces costs and time during replacement. Furthermore, by quickly replacing the blade member 10, the mixing and melting device 1 does not experience fluctuations in the conditions of pulverization, mixing, and melting, or the conditions for generating shear and frictional heat, and does not reduce reproducibility during mass production. Furthermore, there is no need to limit the materials used to suppress wear on the blade member 10.

[0093] In this embodiment, the blade base 100 has a concave guide portion 100a, and the blade tip 111 has a protrusion 101b that is guided by the guide portion 100a. However, this is not limiting, and it is acceptable if one of the blade base 100 or the blade tip 111 has a concave guide portion 100a, and the other of the blade base 100 or the blade tip 111 has a protrusion 101b that is guided by the guide portion 100a.

[0094] The shapes of the protrusions 101b and the guides 100a are not limited to a T-shaped cross section or a trapezoidal cross section, and may be other shapes. The positions of the protrusions 101b and the guides 100a may be anywhere, and the number of the protrusions 101b and the guides 100a may be any number.

[0095] The impeller blade tip portion 101 of this embodiment is preferably made of a plurality of materials with different hardnesses so that the material can be selected based on its hardness. The material of the impeller blade tip portion 101 may be selected according to the hardness of the material. For example, a material with a Mohs hardness of 5 or more, such as steel, may be used as the resin material. Furthermore, for harder materials, a harder material may be selected and used.

[0096] As described above, the mixing and melting device 1 of this embodiment comprises a motor 8 that generates a driving force, a rotating shaft 5 that is rotated by the motor 8, a plurality of blade members 10 formed on the outer periphery of the other axial side of the rotating shaft 5, a material input section 14 into which materials are input, and a mixing container 3 that is connected below the material input section 14, through which the rotating shaft 5 passes, and that mixes and melts the materials input into the material input section 14, and the blade member 10 has a blade base 100 arranged on the rotating shaft 5, and a blade tip 101 that is removably attached to the blade base 100.

[0097] Therefore, in the mixing and melting device 1 of this embodiment, the blade tip 101 of the blade member 10 is detachable from the blade base 100, so there is no need to remove the entire shaft when repairing or replacing wear, which saves cost and time. Also, by quickly replacing the blade member 10, the mixing and melting device 1 does not experience fluctuations in the conditions of pulverization, mixing, and melting, or the conditions for generating shear and frictional heat, and there is no decrease in reproducibility during mass production. Furthermore, there is no need to limit the materials used to suppress wear of the blade member 10.

[0098] Furthermore, in the mixing and melting apparatus 1 of this embodiment, the blade member 10 has bolts 102 as holding parts for attaching the blade base 100 and the blade tip 101. Therefore, the mixing and melting apparatus 1 of this embodiment can appropriately attach the blade base 100 and the blade tip 101.

[0099] Furthermore, in the mixing and melting device 1 of this embodiment, one of the blade base 100 and the blade tip 101 has a concave guide portion 100a, and the other of the blade base 100 and the blade tip 101 has a protrusion 101b that is guided by the guide portion 100a. Therefore, the mixing and melting device 1 of this embodiment allows the blade tip 101 to be smoothly replaced.

[0100] Furthermore, in the mixing and melting apparatus 1 of this embodiment, if the rotation direction of the rotary shaft 5 is defined as rotation direction A and the direction in which the material flows from upstream to downstream of the rotary shaft 5 is defined as rotation axis direction B, a notch is formed on the front side of the tip of the blade base 100 in the rotation direction A, and the blade tip portion 101 fits into the notch. Therefore, the mixing and melting apparatus 1 of this embodiment can further reduce the cost and time required for replacement by making the replaceable blade tip portion 101 small. Furthermore, the material can be brought into appropriate contact with the replaceable blade tip portion 101.

[0101] Furthermore, in the mixing and melting apparatus 1 of this embodiment, if the rotation direction of the rotary shaft 5 is defined as rotation direction A and the direction in which the material flows from upstream to downstream of the rotary shaft 5 is defined as rotation axis direction B, notches are formed in front of the tip of the blade base 100 in the rotation direction A and on the downstream and tip sides in the rotation axis direction B, and the blade tip portion 101 fits into the notches. Therefore, the mixing and melting apparatus 1 of this embodiment can further reduce the cost and time required for replacement by making the replaceable blade tip portion 101 small. Furthermore, the material can be brought into appropriate contact with the replaceable blade tip portion 101.

[0102] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention, all of which are included in the technical concept of the present invention.

[0103] 1...mixing and melting device, 3...mixing container, 3a...material supply section, 3b...material mixing section, 4...bearing, 5...rotating shaft, 6...pulley, 7...V-belt, 8...motor, 9...rotary joint, 11...vertical wall, 12...supply screw, 14...material input section, 15...opening and closing section, 16...balance wheel, 17...discharge outlet cover, 18...shaft, 19...rotary cylinder, 20...collar, 21...control panel, 22...cooling section, 23...cooling tower, 24...water passage, 30...fluid supply section, 31...supply pipe, 32...flow rate control section, 33...fluid supply member, 10...blade member, 100...blade base, 100a...guide section, 101...blade tip section, 101a...tip body, 101b...protrusion, 102...bolt (retaining section)

Claims

1. A mixing and melting device comprising: a motor that generates a driving force; a rotating shaft that is rotated by the motor; a plurality of blade members formed on the outer periphery of the other axial side of the rotating shaft; a material input section into which material is input; a mixing vessel connected below the material input section, through which the rotating shaft passes, for mixing and melting the material input into the material input section; and a fluid supply section that supplies fluid to the material input section or the mixing vessel.

2. The mixing and melting device according to claim 1, wherein the fluid supply section comprises: a supply pipe; and a fluid supply member installed at the tip of the supply pipe for supplying the fluid.

3. The mixing and melting device according to claim 2, wherein the fluid supply section has a plurality of the fluid supply members.

4. The mixing and melting device according to claim 2, wherein the fluid supplying member is a nozzle or shower for spraying the fluid in the form of mist.

5. The mixing and melting apparatus according to claim 2, wherein the fluid supply section further comprises a flow rate control section arranged midway along the supply pipe for adjusting the flow rate of the fluid.

6. A mixing and melting apparatus as described in claim 2, further comprising a cooling section which cools the mixing vessel by circulating cooling water, the cooling section having a water passage formed continuously in the peripheral wall of the mixing vessel, the water passage communicating with the supply pipe, and using the cooling water as the fluid.

7. The mixing and melting device according to claim 1, wherein the fluid used is air, tap water, cold water, warm water or hot water.

8. A mixing and melting device comprising: a motor that generates a driving force; a rotating shaft rotated by the motor; a plurality of blade members formed on the outer periphery of the other axial side of the rotating shaft; a material input section into which material is input; and a mixing vessel connected below the material input section, through which the rotating shaft passes, for mixing and melting the material input to the material input section, wherein the blade members have a blade base disposed on the rotating shaft, and a blade tip removably attached to the blade base.

9. The mixing and melting device according to claim 8, wherein the blade member has a holder for mounting the blade base and the blade tip.

10. A mixing and melting device as described in claim 8, wherein one of the blade base and the blade tip has a concave guide portion, and the other of the blade base and the blade tip has a protrusion guided by the guide portion.

11. The mixing and melting device described in claim 8, wherein the rotation direction of the rotating shaft is defined as rotation direction A and the direction in which the material flows from upstream to downstream of the rotating shaft is defined as rotation axis direction B, a notch is formed in front of the tip of the blade base in the direction of rotation A, and the blade tip fits into the notch.

12. A mixing and melting device as described in claim 8, wherein the rotation direction of the rotating shaft is defined as rotation direction A and the direction in which the material flows from upstream to downstream of the rotating shaft is defined as rotation axis direction B, a notch is formed in front of the tip of the blade base in the rotation direction A and on the downstream and tip sides in the rotation axis direction B, and the blade tip fits into the notch.

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