JP6752445B2 - Stirring blade attachment / detachment structure - Google Patents

Description

The present invention relates to a stirring blade of a stirring device, and more particularly to a stirring blade attachment / detachment structure in which a blade plate is detachably attached to a substrate with a stopper plate.

Conventionally, as typified by a steam kneader, a stirring device in which a stirring blade is attached to a stirring shaft via an arm and the object to be agitated is stirred by rotation of the stirring shaft is known. In this stirring device, the stirring blade includes a substrate, a blade plate, and a stop plate, and the blade plate is detachably attached to the substrate held by the arm with the stop plate. At this time, in a state where the blade plate and the stop plate are overlapped on the substrate, screws are screwed from the stop plate to the substrate via the blade plate to integrate each plate.

However, when the blade plate is attached and detached with a screw, if the screw falls off during operation, foreign matter may be mixed into the agitated object (typically food). In addition, a screwdriver is required for disassembly during cleaning and assembly after cleaning, which requires time and effort.

In consideration of such inconvenience, as disclosed in Patent Document 1 below, a blade mounting device that does not use screws has been proposed. In this device, a blade mounting member (1) connected to the tip of an arm (82) by a shaft (85), a blade (2) attached to the blade mounting member (1), and a slide that presses the blade (2). A member (3), an engaging portion (4) that locks the slide member (3) to the holding position of the blade (2), and a cotter that holds the slide member (3) at the holding position of the blade (2). It consists of (5) and a pin (6) that holds down this cotter (5). The engaging portion (4) has an annular groove (11) provided at the tip of a pin (10) planted in the blade mounting member (1) and a daruma-shaped portion extending in the radial direction provided in the slide member (3). It is an engagement with the double hole (12), in which the annular groove (11) of the pin (10) is engaged with the smaller hole, and the larger hole is a hole for escape of the pin (10). .. The pin (6) is urged by the spring (13) in the direction of pressing the cotter (5).

Japanese Unexamined Patent Publication No. 11-266821 (paragraphs [0008]-[0010], FIG. 1)

In the invention described in Patent Document 1, the blade (2) is attached to the blade attachment member (1) by the slide member (3), the state is held by the cotter (5), and the cotter (5) is held by the spring (13). ) Is held by the pin (6) urged by. Therefore, a cotter or the like is required, the number of parts increases, and it takes time and effort to assemble and disassemble. Furthermore, the pin that can move against the urging force of the spring (in other words, the pin that is not positioned with respect to the arm), and the slide member is held via the cotter, so the blade is stable with respect to the blade mounting member. It cannot be fixed securely.

Therefore, an object to be solved by the present invention is to provide a stirring blade attachment / detachment structure capable of easily and surely attaching a blade plate to a substrate with a simple configuration.

The present invention has been made to solve the above problems, and in the invention according to claim 1, the stirring blade is attached to the stirring shaft via an arm, and the stirring object is stirred by the rotation of the stirring shaft. In the device, the stirring blade is provided with a substrate, a blade plate, and a stop plate, and the blade plate is detachably attached to the substrate held by the arm with the stop plate. The base end of the arm is agitated. While fixed to the shaft, a blade holding portion for holding the stirring blade is provided at the tip portion, and a shaft hole is formed in the blade holding portion along a direction orthogonal to the axis of the arm tip portion. , The substrate is provided with a mounting portion for the blade holding portion of the arm at the base end portion, and a shaft hole is also formed in this mounting portion along the longitudinal direction of the substrate, and the inside of the substrate and the stop plate is formed. , A fixed protrusion is provided on one side, and an engagement hole for the fixed protrusion is formed on the other. The engagement hole is formed in a release hole into which the tip of the fixed protrusion can be inserted and removed, and the release hole. It is provided with an articulated fixing hole, and the fixing protrusion has a head at the tip of the shaft portion, and the head has a shape and size that pass through the release hole of the engaging hole but not the fixing hole. The shaft portion of the fixed protrusion was fitted into the shaft portion insertion hole provided in the blade plate, and the engagement hole was arranged on the shaft portion of the fixed protrusion via the release hole, and the plates were overlapped. In this state, the stop plate is slid with respect to the board, the fixing holes of the engaging holes are fitted and engaged with the shaft portion of the fixing protrusion, and the blade holding portion of the arm and the shaft holes of the mounting portion of the board are engaged. The stirring blade attachment / detachment structure is characterized in that the substrate is held by the arm by passing the shaft, and the sliding of the stop plate with respect to the substrate in the disengagement direction is restricted by the shaft.

According to the first aspect of the present invention, the blade plate is held by the fixing protrusion provided on one of the substrate and the stop plate, and the engaging hole provided on the other is engaged with the fixing protrusion. Then, the blade plate can be fixed to the substrate with a stopper plate. At that time, the blade plate can be fixed to the substrate by engaging the fixing protrusion and the engaging hole only by sliding the stop plate with respect to the substrate. Then, by passing the shaft through the shaft holes of the blade holding portion of the arm and the mounting portion of the substrate, the substrate can be held by the arm, and the slide of the stop plate with respect to the substrate in the disengagement direction can be regulated by the shaft. In this way, with a simple configuration, the stirring blade can be easily and surely attached to and detached from the arm, and the blade plate can be attached to and detached from the substrate of the stirring blade.

According to the second aspect of the present invention, the fixed protrusion has a first shaft portion fitted into a shaft portion insertion hole of a blade plate, a second shaft portion having a diameter smaller than that of the first shaft portion, and the second shaft portion. It is composed of a fixing pin having a head having a diameter larger than that of the portion, and the engaging hole extends outward from the release hole with the release hole larger than the head of the fixing pin and a width smaller than the release hole. The shape is such that it is connected to the fixing hole to be ejected, the shaft part insertion hole of the blade plate is fitted into the first shaft part of the fixing pin, and the engaging hole is the second shaft of the fixing pin through the release hole. The stop plate is slid toward the tip side with respect to the substrate in a state where the plates are overlapped with each other, and the fixing hole of the engaging hole is fitted into the second shaft portion of the fixing pin to engage. By passing the shaft through each shaft hole of the blade holding part of the arm and the mounting part of the board, the board is held by the arm and the slide of the stopper plate to the board to the base end side is restricted by the shaft. The stirring blade attachment / detachment structure according to claim 1, wherein the stirring blade is attached / detached.

According to the second aspect of the present invention, the fixing protrusion is formed of a stepped shaft-shaped fixing pin, while the engaging hole is formed of a shape in which a release hole and a fixing hole are connected to each other. Then, while the blade plate is held by the fixing pin provided on one of the substrate and the stop plate, the engagement hole provided on the other side is engaged with the fixing pin, and the blade plate is attached to the substrate by the stop plate. Can be fixed. At that time, the blade plate can be fixed to the substrate by engaging the fixing pin and the engaging hole only by sliding the stop plate toward the tip side with respect to the substrate. Then, by passing the shaft through the shaft holes of the blade holding portion of the arm and the mounting portion of the substrate, the substrate can be held by the arm, and the slide of the stopper plate to the substrate toward the base end side can be regulated by the shaft. In this way, with a simple configuration, the stirring blade can be easily and surely attached to and detached from the arm, and the blade plate can be attached to and detached from the substrate of the stirring blade.

In the invention according to claim 3, while the fixing protrusion is provided on the substrate, the engaging hole is formed in the stop plate, and the engaging hole is fixed from the release hole toward the base end side of the stop plate. The hole extends, and the base end portion of the substrate is provided with the mounting portion at the center portion in the longitudinal direction of the substrate, while the base end portion of the stop plate is stopped at the base end portion in the longitudinal direction outside the mounting portion. A stopper is provided substantially perpendicular to the plate surface of the plate, and the shaft has a spindle that is fitted into each shaft hole of the blade holding portion of the arm and the mounting portion of the board, and a spindle having a diameter larger than that of each shaft hole. It is provided with a head provided at the base end portion of the portion and a retaining material provided at the tip portion of the main shaft portion, and the shaft is penetrated through each shaft hole of the blade holding portion of the arm and the mounting portion of the board to retain the retaining member. The stirring blade attachment / detachment structure according to claim 1 or 2, wherein the stopper of the stopper plate is restricted from moving to the proximal end side by the head of the shaft while being prevented from coming off by the material. ..

According to the third aspect of the present invention, while the substrate is provided with the fixing protrusion, the stop plate is formed with an engaging hole, and the stop plate is slid toward the tip side with respect to the substrate to form the fixing protrusion. The blade plate can be fixed to the substrate by engaging with the engagement hole. Then, the shaft is passed through each shaft hole of the blade holding portion of the arm and the mounting portion of the board, and the retaining material is used to prevent the shaft from coming off. The sliding of the stop plate to the base end side is restricted.

In the invention according to claim 4, the fixing protrusion is provided on the stop plate, while the engaging hole is formed on the substrate, and the engaging hole is formed from the release hole toward the tip end side of the substrate. The base end of the board is extended, and the mounting portion is provided at the center of the board in the longitudinal direction, while the base end of the stop plate is provided with a stop plate on the outside in the longitudinal direction from the mounting portion. A stopper is provided substantially perpendicular to the plate surface, and the shaft has a main shaft portion that is fitted into each shaft hole of the blade holding portion of the arm and the mounting portion of the board, and a main shaft portion having a diameter larger than each of the shaft holes. A head provided at the base end and a retaining material provided at the tip of the main shaft are provided, and the shaft is penetrated into each shaft hole of the blade holding portion of the arm and the mounting portion of the board, and the retaining material is used. The stirring blade attachment / detachment structure according to claim 1 or 2, wherein the stopper of the stopper plate is restricted from moving to the proximal end side by the head of the shaft in a state where the stopper plate is prevented from coming off.

According to the invention of claim 4, while the stop plate is provided with a fixing protrusion, an engaging hole is formed in the substrate, and the stop plate is slid toward the tip side with respect to the substrate to form a fixing protrusion. The blade plate can be fixed to the substrate by engaging with the engagement hole. Then, the shaft is passed through each shaft hole of the blade holding portion of the arm and the mounting portion of the board, and the retaining material is used to prevent the shaft from coming off. The sliding of the stop plate to the base end side is restricted.

According to the fifth aspect of the present invention, there is a gap between the stopper of the stop plate and the base end portion of the blade plate and the substrate in a state where the fixing hole of the engaging hole is engaged with the shaft portion of the fixing protrusion portion. The stirring blade attachment / detachment structure according to claim 3 or 4, wherein the stirring blade is open.

According to the fifth aspect of the present invention, there is a gap between the stopper of the stop plate and the base end portion of the blade plate and the substrate in the assembled state of the stirring blade, so that the gap is used. (Specifically, an object (for example, the tip of a tool) is inserted into the gap), and the stop plate can be easily slid with respect to the substrate in the disengagement direction. As a result, the stirring blade can be easily disassembled.

Further, in the invention according to claim 6, instead of forming a shaft hole in the blade holding portion of the arm, the insertion portion of the mounting portion of the substrate into the shaft hole is projected so that the base end portion of the shaft is integrated. Instead of forming a shaft hole in the mounting portion of the board, the base end portion of the shaft is integrally provided by projecting the insertion portion of the blade holding portion of the arm into the shaft hole. The stirring blade attachment / detachment structure according to any one of claims 1 to 5, wherein the stirring blade is attached / detached.

According to the invention according to claim 6, even if the base end portion of the shaft is integrally provided in advance in the blade holding portion of the arm or the mounting portion of the substrate, the effect of the invention according to each of the above claims is achieved. Can be played.

According to the stirring blade attachment / detachment structure of the present invention, the blade plate can be easily and surely attached to the substrate with a simple structure.

It is a schematic front view which shows an example of the stirring apparatus to which the stirring blade attachment / detachment structure of one Example of this invention is applied, and is shown in the cross section by cutting out a part. FIG. 5 is a schematic exploded perspective view showing a structure for attaching and detaching a stirring blade to an arm of a stirring shaft in the stirring device shown in FIG. It is a schematic vertical sectional view which shows the assembled state (that is, the state which the stirring blade is attached to the arm of a stirring shaft) of the stirring blade attachment / detachment structure shown in FIG. It is a schematic front view of the arm with a stirring blade shown in FIG. 3, and a part thereof is shown in a cross section. It is a schematic rear view of the stirring blade shown in FIG. FIG. 5 is a schematic cross-sectional view showing a state of the stirring blade shown in FIG. 5 when disassembled. It is a schematic exploded perspective view which shows the modification 1 of the stirring blade attachment / detachment structure shown in FIG. It is a schematic front view which shows the modification 2 of the stirring blade attachment / detachment structure shown in FIG. 2, and shows a part in a cross section.

Hereinafter, specific examples of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic front view showing an example of a stirring device 1 to which the stirring blade attachment / detachment structure of one embodiment of the present invention is applied, and is shown in a cross section with a part cut out.

The stirring device 1 of this embodiment is a steam kneader that stirs the food while heating it. The stirring device 1 includes a processing tank 2 in which the food material as an object to be agitated is housed, and a stirring blade 3 for stirring the food material in the processing tank 2.

The treatment tank 2 has a substantially cylindrical shape in the lateral direction, and both ends in the axial direction thereof are closed by end walls 2a. Further, a substantially rectangular tubular hopper 4 is provided at the central portion in the axial direction of the treatment tank 2 by cutting out the upper portion of the peripheral side wall. Further, the processing tank 2 is provided with a steam jacket 5, and steam can be supplied to the steam jacket 5 via a steam supply path 7 provided with a steam inlet valve 6. Then, the condensed water of steam supplied to the steam jacket 5 can be discharged to the outside through the drain discharge passage 9 with the steam trap 8.

A stirring shaft 10 is provided in the processing tank 2 so as to bridge the end walls 2a at both ends in the axial direction. The stirring shaft 10 is made rotatable by a drive mechanism in the drive box 11. Further, a tilting mechanism of the processing tank 2 is also built in the drive box 11, and the tilting mechanism enables the tilting mechanism to tilt the upper opening of the processing tank 2 (hopper 4) forward. The drive mechanism of the stirring shaft 10 and the tilting mechanism of the processing tank 2 are controlled by the operation of the operation panel 12 provided with the touch panel and the operation buttons.

A plurality of stirring blades 3 are provided in the processing tank 2. Each stirring blade 3 is attached to the stirring shaft 10 via the arm 13. At that time, the stirring blades 3 are attached to the stirring shaft 10 at a plurality of positions in the axial direction via the arm 13. The shapes of the arm 13 and / or the stirring blade 3 differ depending on the installation location with respect to the stirring shaft 10, but are shown in the mounting structure of the arm 13 with respect to the stirring shaft 10, the mounting structure of the stirring blade 3 with respect to the arm 13, and FIG. The mounting structure of the blade plate 15 with respect to the substrate 14 of the stirring blade 3 does not change at any location. Therefore, the arm 13 and the stirring blade 3 at specific locations will be described below, but the same applies to other locations.

2 to 4 are schematic views showing an arm 13 and a stirring blade 3 of the stirring device 1 of this embodiment, FIG. 2 is an exploded perspective view, FIG. 3 is a vertical sectional view in an assembled state, and FIG. 4 is an assembled state. It is a front view of the above, and a part of the cross section is shown.

The arm 13 comprises an arm body 13a made of a desiredly curved (or linear) round bar. The tip of the arm body 13a is formed to have a slightly large diameter. The arm body 13a is provided with a boss portion 17 for fixing to the stirring shaft 10 at the base end portion, while a blade holding portion 18 for holding the stirring blade 3 is provided at the tip end portion. The boss portion 17 includes a first boss material 19 and a second boss material 20 that have been split in half.

The first boss material 19 includes a substantially semi-cylindrical portion 19a and a pair of flat plate portions 19b connected to both ends in the circumferential direction thereof. A base end portion of the arm body 13a is integrally provided on the outer surface of the substantially semi-cylindrical portion 19a at the central portion in the axial direction and at the central portion in the circumferential direction. Further, one or a plurality of screw holes 19c are formed through the at least one flat plate portion 19b.

The second boss material 20 includes a substantially semi-cylindrical portion 20a and a pair of flat plate portions 20b connected to both ends in the circumferential direction thereof. On one of the flat plate portions 20b, the flat plate portions 19b and 20b of the boss members 19 and 20 are overlapped with each other (in other words, the semi-cylindrical portions 19a and 20a face each other), and the first boss material 19 A through hole 20c without a screw groove is formed at a position corresponding to the screw hole 19c of the above. The other flat plate portion 20b is provided with a receiving portion 20d of the flat plate portion 19b of the first boss material 19. Specifically, the other flat plate portion 20b extends to the extending tip portion from the substantially semi-cylindrical portion 20a in a direction opposite to the convex direction of the substantially semi-cylindrical portion 20a (the bulging direction of the substantially semicircle). After the first piece 20d'is provided, the second piece 20d "is provided in parallel with the flat plate portion 20b. As a result, a receiving groove 20e is formed between the flat plate portion 20b and the receiving portion 20d. The width of the receiving groove 20e (the separation distance between the flat plate portion 20b and the second piece 20d ”corresponds to the thickness of the flat plate portion 19b of the first boss material 19.

Therefore, in order to fix the arm 13 to the stirring shaft 10, at a predetermined position of the stirring shaft 10, substantially semi-cylindrical portions 19a and 20a of the boss materials 19 and 20 are fitted to the outer peripheral portion of the stirring shaft 10 and the second boss. One flat plate portion 19b of the first boss material 19 may be fitted into the receiving groove 20e of the material 20, and the flat plate portions 19b and 20b of both boss materials 19 and 20 may be overlapped with each other. Then, the bolt 21 may be screwed from the through hole 20c of the second boss material 20 into the screw hole 19c of the first boss material 19 to integrate the two boss materials 19 and 20. The arm 13 can be attached to the stirring shaft 10 by simply bolting only one side of the pair of flat plate portions 19b, 19b. If screw holes 19c are formed in both of the pair of flat plate portions 19b of the first boss material 19, the receiving grooves 20e of the second boss material 20 can be fitted into any of the flat plate portions 19b for assembly. ..

By the way, a key groove is formed on the inner peripheral surface of the substantially semi-cylindrical portion 19a (20a) of the first boss material 19 (or the second boss material 20). Therefore, by assembling while arranging the key between the key groove of the first boss material 19 (or the second boss material 20) and the key groove of the stirring shaft 10, the arm 13 and thus the stirring blade 3 are assembled with respect to the stirring shaft 10. Can be rotated integrally.

In this embodiment, the first boss material 19 is provided with a screw hole 19c, while the second boss material 20 is provided with a through hole 20c. On the contrary, the first boss material 19 is provided with a through hole. On the other hand, a screw hole may be provided in the second boss material 20 so that the bolt 21 is screwed into the second boss material 20 from the side of the first boss material 19. Further, in this embodiment, the receiving portion 20d is provided on the second boss material 20, but on the contrary, it may be provided on the side of the first boss material 19. In other words, in FIG. 2, the arm 13 is provided on the first boss material 19, but may be provided on the second boss material 20.

A blade holding portion 18 for holding the stirring blade 3 is provided at the tip end portion of the arm 13. The blade holding portion 18 of the present embodiment includes a pair of plate-shaped blade holding pieces 18a provided so as to project from the tip surface of the arm body 13a, and the pair of blade holding pieces 18a are arranged in parallel with each other separated from each other. Will be done. A shaft hole 18b is formed through the pair of blade holding pieces 18a at right angles to the plate surface.

On the tip surface of the arm body 13a, a pin accommodating hole 22 is formed by opening between a pair of blade holding pieces 18a. The pressing pin 24 is accommodated in the pin accommodating hole 22 via the coil spring 23. The tip of the pressing pin 24 is formed in a substantially hemispherical shape. The pressing pin 24 is urged by the coil spring 23 so as to protrude from the opening (tip surface of the arm body 13a) of the pin accommodating hole 22. The pin accommodating hole 22 is provided at a position deviated from the axis of the arm main body 13a and deviated to one side in the width direction (right side in FIG. 2) of the blade holding piece 18a.

The stirring blade 3 includes a substrate 14, a blade plate 15, and a stopper plate 16, and the blade plate 15 is detachably attached to the substrate 14 held by the arm 13 with the stopper plate 16. In this embodiment, the substrate 14 and the stop plate 16 are made of metal (for example, stainless steel), and the blade plate 15 is made of synthetic resin (for example, fluororesin). In the following description, the longitudinal direction of each plate 14 to 16 is the left-right direction, and the plate thickness direction perpendicular to the plate surface is the front-rear direction (the right side in FIG. 3 is the front).

The substrate 14 is made of a substantially rectangular plate material, and a mounting portion 25 for attaching the arm 13 to the blade holding portion 18 is provided at a base end portion (lower end portion of the substrate 14 in FIG. 2) at the center portion in the left-right direction thereof. The mounting portion 25 has a substantially rectangular block shape, has an extending portion 25a toward the tip end side on the rear surface side, and the extending portion 25a is overlapped and fixed on the rear surface of the substrate 14. A shaft hole 25b is formed through the mounting portion 25 along the left-right direction.

Fixing pins 26 as fixing protrusions are provided on the left and right ends of the front surface of the substrate 14. In this embodiment, the fixing pin 26 is formed of a short round bar member and is provided so as to project forward from the substrate 14. At that time, the base end portion of the fixing pin 26 is fixed to the substrate 14 by welding.

The fixing pin 26 includes a first shaft portion 26a, a second shaft portion 26b, and a head portion 26c in this order from the side of the substrate 14. Specifically, the fixing pin 26 includes a first shaft portion 26a fitted into the shaft portion insertion hole 27 of the blade plate 15, a second shaft portion 26b having a diameter smaller than that of the first shaft portion 26a, and the second shaft. It includes a head 26c having a diameter larger than that of the portion 26b. The diameters of the first shaft portion 26a and the head portion 26c are the same in this embodiment, but may be different from each other depending on the case. The total length of the first shaft portion 26a and the second shaft portion 26b corresponds to the total thickness of the blade plate 15 and the stop plate 16, and the length of the second shaft portion 26b is the stop plate. It is equal to or thicker than the thickness of 16.

The blade plate 15 is made of a substantially rectangular plate material, and the tip edge (upper end surface in FIG. 2) is chamfered as desired to form an inclined surface 15a (FIG. 3). A shaft insertion hole 27 is formed through the blade plate 15 at a position corresponding to the fixing pin 26 of the substrate 14. Further, the width dimension of the substrate 14 and the blade plate 15 may be changed so that the tip end side is inclined toward the tip end side as the tip end side goes to one side in the left-right direction (the upper end side is inclined upward as the upper end side goes to the left side in FIG. 4). .. The stop plate 16 may be inclined in the same manner. However, such an inclination is not essential for each of the plates 14 to 16.

The stop plate 16 is made of a substantially rectangular plate material, and an engagement hole 28 for the fixing pin 26 is formed through at a position corresponding to the fixing pin 26 of the substrate 14. Each engaging hole 28 includes a release hole 28a into which the tip of the fixing pin 26 can be inserted and removed, and a fixing hole 28b connected to the release hole 28a. In this embodiment, each engaging hole 28 connects a release hole 28a larger than the head 26c of the fixing pin 26 and a fixing hole 28b narrower than the release hole 28a and extending outward from the release hole 28a. It is said to have a shaped shape. More specifically, in the case of the illustrated example, a round hole-shaped release hole 28a and a fixing hole 28b extending from the release hole 28a to the base end side in a long hole shape are provided, and the width dimension of the fixing hole 28b is It is formed smaller than the diameter of the release hole 28a. The diameter of the release hole 28a is larger than the diameter of the head 26c of the fixing pin 26, the width of the fixing hole 28b is smaller than the diameter of the head 26c of the fixing pin 26, and the second shaft portion of the fixing pin 26. It roughly corresponds to the diameter of 26b.

A shallow notch 16a is formed in the central portion in the left-right direction at the base end portion of the stop plate 16, and stoppers 29 are provided on the left and right sides thereof. The shape of each stopper 29 is not particularly limited, but in this embodiment, the stopper 29 has a substantially rectangular plate shape, is provided substantially perpendicular to the plate surface of the stopper plate 16, and is provided so as to extend to the rear of the stopper plate 16.

To assemble the stirring blade 3, first, the blade plate 15 is superposed on the substrate 14 while fitting the shaft portion insertion hole 27 of the blade plate 15 into the fixing pin 26 of the substrate 14. As a result, the fixing pin 26 of the substrate 14 is in a state where the shaft portion insertion hole 27 of the blade plate 15 is fitted into the first shaft portion 26a and the second shaft portion 26b and the head portion 26c are projected from the blade plate 15. Will be done. Therefore, the release holes 28a of the engagement holes 28 of the stop plate 16 are fitted into the protruding portions 26b and 26c of the fixing pin 26, and the stop plate 16 is overlapped with the blade plate 15. With the plates 14 to 16 overlapped in this way, the stop plate 16 may be slid toward the tip side with respect to the substrate 14. As a result, the fixing hole 28b of the engaging hole 28 is fitted into the second shaft portion 26b of the fixing pin 26, and the engaging hole 28 of the stop plate 16 is engaged with the fixing pin 26 of the substrate 14. In a state where the stop plate 16 is sufficiently slid toward the tip side with respect to the substrate 14, the plates 14 to 16 are arranged at positions corresponding to each other on the left and right end sides and the base end side, and the substrate 14 and the stop plate 16 are arranged. On the other hand, the blade plate 15 is arranged so as to extend toward the tip side.

The stirring blade 3 configured in this way is held by the blade holding portion 18 of the arm 13 as follows. That is, the mounting portion 25 of the substrate 14 is fitted between the blade holding pieces 18a of the blade holding portion 18 of the arm 13, and the shaft 30 is passed through the shaft holes 18b and 25b to be integrated.

The shaft 30 has a spindle portion 30a fitted into the shaft holes 18b and 25b of the blade holding portion 18 of the arm 13 and the mounting portion 25 of the substrate 14, and a base end of the spindle portion 30a having a diameter larger than that of the shaft holes 18b and 25b. A head portion 30b provided on the portion and a retaining member 30c provided on the tip portion of the spindle portion 30a are provided. A notch is formed at the tip of the shaft 30 so as to penetrate the tip surface and the diameter direction, and a base end portion of a substantially rectangular plate-shaped retaining member 30c is arranged in the notch, and the support shaft 30d It is held at. As a result, the retaining member 30c can rotate around the support shaft 30d.

When the shaft 30 is passed through the blade holding portion 18 and the mounting portion 25, the retaining member 30c may be arranged along the axial direction of the shaft 30 as shown by the solid line in FIG. Then, after passing the shaft 30 through the blade holding portion 18 and the mounting portion 25, as shown by the alternate long and short dash line in FIG. 2, the retaining member 30c is folded in the radial direction of the shaft 30 to prevent the shaft 30 from coming off. It is planned. In that state, the stirring blade 3 is urged rearward around the shaft 30 by the upward urging of the pressing pin 24, but the rear lower surface of the mounting portion 25 is in contact with the tip surface of the arm body 13a. So, rotation above a certain level is regulated. While the stirring device 1 is in operation, the stirring blade 3 rotates toward the front side in FIG. 2, but the tip end side of the blade plate 15 is likely to come into contact with the inner surface of the processing tank 2 due to the action of the pressing pin 24.

When the stirring blade 3 is attached to the arm 13, as shown in FIG. 4, the stop plate 16 (more specifically, the stopper 29 of the stop plate 16 in this embodiment) is in contact with or close to the head 30b of the shaft 30. By doing so, the sliding of the stop plate 16 with respect to the substrate 14 toward the base end side (that is, the engagement release direction of the engagement hole 28 with respect to the fixing pin 26) is restricted. That is, with the stirring blade 3 attached to the arm 13, the maximum allowable gap between the head portion 30b of the shaft 30 and the stopper 29 of the stop plate 16 is such that the stop plate 16 is moved toward the base end side with respect to the substrate 14. Even if it is attempted to slide, the position where the release hole 28a of the engagement hole 28 of the stop plate 16 does not come to the position of the fixing pin 26 of the substrate 14, and the smaller the gap, the more preferable.

Contrary to the above, when it is desired to remove the stirring blade 3 from the arm 13, first, the retaining member 30c of the shaft 30 is arranged along the axial direction of the shaft 30, and the blade holding portion 18 of the arm 13 and the substrate 14 are first arranged. It may be removed from the mounting portion 25 of. After that, the stop plate 16 is slid toward the base end side with respect to the board 14, and the fixing pin 26 of the board 14 is arranged in the release hole 28a of the engagement hole 28 of the stop plate 16, and the stop plate 16 and the blades are arranged from the board 14. The plate 15 can be removed.

FIG. 5 is a rear view of the stirring blade 3 removed from the arm 13. Further, FIG. 6 is a schematic cross-sectional view showing a state of the stirring blade 3 at the time of disassembly. As shown in these figures, in the engaged state of the fixing hole 28b of the engaging hole 28 of the fixing plate 16 with the fixing pin 26 of the substrate 14, the stopper 29 of the stopping plate 16 and the base of the blade plate 15 and the substrate 14 There is a gap X between the end and the end. Therefore, when moving the stop plate 16 to the base end side with respect to the substrate 14 in order to disassemble the stirring blade 3, an appropriate object (for example, the tip of a tool) is inserted into the gap X to widen the gap. You can also do it.

Next, a modified example of the stirring blade attachment / detachment structure of the above embodiment will be described. Each modification described below is basically the same as that of the above embodiment. Therefore, in the following, the differences between the two will be mainly described, and the description of other parts will be omitted. Further, the corresponding parts will be described with the same reference numerals.

FIG. 7 is a schematic exploded perspective view showing a modification 1 of the stirring blade attachment / detachment structure of the above embodiment. In the first modification, the shape of the fixing pin 26 is different from that of the above embodiment, and the shape of the shaft portion insertion hole 27 formed in the blade plate 15 and the engagement hole 28 formed in the stop plate 16 are changed accordingly. different. Specifically, the fixing pin 26 has a plate shape in which the first shaft portion 26a and the second shaft portion 26b are formed to have the same diameter, and the head portion 26c protrudes outward from the respective shaft portions 26a and 26b. Is formed in. The blade plate 15 has a shaft portion insertion hole 27 in which a round hole 27a corresponding to each of the shaft portions 26a and 26b of the fixing pin 26 and a rectangular hole 27b corresponding to the head portion 26c of the fixing pin 26 are overlapped. Is formed. On the other hand, the stop plate 16 is formed with a release hole 28a that is the same as or larger than the shaft portion insertion hole 27 of the blade plate 15, and a fixing hole 28b is formed extending from the release hole 28a toward the base end side. Has been done.

In order to attach the blade plate 15 to the substrate 14 with the stopper plate 16, the head 26c of the fixing pin 26 of the substrate 14 is passed through the shaft insertion hole 27 of the blade plate 15 and the fixing pin 26 is attached in the same manner as in the above embodiment. The round hole 27a of the shaft portion insertion hole 27 may be fitted into the shaft portion 26a. Similarly, the head 26c of the fixing pin 26 of the substrate 14 is passed through the release hole 28a of the engaging hole 28 of the stopper plate 16, and the stopper plate 16 is attached to the substrate 14 in a state where the plates 14 to 16 are overlapped with each other. It may be slid to the tip side. As a result, the shaft portion 26b of the fixing pin 26 of the substrate 14 and the fixing hole 28b of the engaging hole 28 of the stop plate 16 are engaged with each other, and the engaged state is maintained by the head portion 26c of the fixing pin 26.

In the first modification, the head portion 26c of the fixing pin 26 is not limited to the shape shown in the illustrated example and can be appropriately changed as long as it is larger than the shaft portions 26a and 26b. Further, the shaft portions 26a and 26b may be divided into a first shaft portion 26a and a second shaft portion 26b in a stepped manner by being formed in a stepped manner as in the above embodiment.

FIG. 8 is a schematic front view showing a modification 2 of the stirring blade attachment / detachment structure of the above embodiment. In the second modification, instead of forming the shaft hole 18b in the blade holding portion 18 of the arm 13, the insertion portion of the mounting portion 25 of the substrate 14 into the shaft hole 25b is projected to project the base end of the shaft 30. The part is provided integrally. Specifically, the blade holding portion 18 of the arm 13 includes only one blade holding piece 18a, and instead of forming a shaft hole in the blade holding piece 18a, the base end portion of the shaft 30 is integrated. It is provided in. Then, a retaining material 30c is provided at the tip of the shaft 30 as in the above embodiment. Therefore, the attachment portion 25 of the substrate 14 of the stirring blade 3 can be detachably attached to the shaft 30 fixed to the arm 13 as in the above embodiment.

In this modification, the base end portion of the shaft 30 is fixed to the blade holding portion 18 of the arm 13, but conversely, the base end portion of the shaft 30 may be fixed to the mounting portion 25 of the substrate 14. Good. That is, instead of forming a shaft hole in the mounting portion 25 of the substrate 14, the insertion portion of the blade holding portion 18 of the arm 13 into the shaft hole 18b is projected so that the base end portion of the shaft 30 is integrally formed. It may be provided. Specifically, the blade holding portion 18 of the arm 13 includes only one blade holding piece 18a, and a shaft hole 18b is formed in the blade holding piece 18a. On the other hand, the mounting portion 25 of the substrate 14 is integrally provided with a base end portion of the shaft 30 instead of forming a shaft hole. Then, a retaining material 30c is provided at the tip of the shaft 30 as in the above embodiment. Therefore, the mounting portion 25 of the substrate 14 can be detachably attached to the blade holding portion 18 of the arm 13 as in the above embodiment.

The structure for attaching and detaching the stirring blade of the present invention is not limited to the configuration of the above embodiment (including the modified example), and can be appropriately changed. In particular, in the above embodiment, the fixing pin 26 of the substrate 14 and the engaging hole 28 of the stop plate 16 are engaged with each other, but the shape of the fixing pin 26 can be changed as appropriate. In other words, the substrate 14 may be provided with some fixed protrusions 26 so that the fixed protrusions 26 and the engagement holes 28 of the stop plate 16 can be engaged with each other.

Further, the fixing protrusion 26 may be provided on the stop plate 16 instead of the substrate 14, and the engagement hole 28 may be provided on the substrate 14 instead of the stop plate 16. Therefore, if the following configurations (a) to (e) are provided, other configurations can be appropriately changed.

(A) Of the substrate 14 and the stop plate 16, the fixing protrusion 26 is provided on one side, and the engaging hole 28 for the fixing protrusion 26 is formed on the other side.
(B) The engaging hole 28 is provided with a release hole 28a into which the tip of the fixing protrusion 26 can be inserted and removed, and a fixing hole 28b connected to the release hole 28a.
(C) The fixing protrusion 26 includes a head 26c at the tip of the shafts 26a and 26b, and the head 26c has a shape and size that passes through the release hole 28a of the engaging hole 28 but does not pass through the fixing hole 28b. To be considered.
(D) The shaft portion 26a of the fixing protrusion 26 is fitted into the shaft portion insertion hole 27 provided in the blade plate 15, and the engagement hole 28 is arranged in the shaft portion 26b of the fixing protrusion 26 via the release hole 28a. In the state where the plates 14 to 16 are overlapped with each other, the stop plate 16 is slid with respect to the substrate 14, and the fixing hole 28b of the engaging hole 28 is fitted and engaged with the shaft portion 26b of the fixing protrusion 26. That.
(E) By passing the shaft 30 through the shaft holes 18b and 25b of the blade holding portion 18 of the arm 13 and the mounting portion 25 of the substrate 14, the substrate 14 is held by the arm 13 and a stopper plate for the substrate 14 is held. The sliding of 16 in the disengagement direction is restricted by the shaft 30.

The case where the fixing pin (fixing protrusion) 26 is provided on the stop plate 16 and the engaging hole 28 is formed on the substrate 14 will be further described as follows. In this case, the stop plate 16 is provided with a fixing pin 26 so as to project toward the side where the substrate 14 is overlapped. On the other hand, the engaging hole 28 is formed through the substrate 14, and the engaging hole 28 is formed by extending the fixing hole 28b from the release hole 28a toward the tip end side of the substrate 14. Then, in a state where the shaft 30 is penetrated through the shaft holes 18b and 25b of the blade holding portion 18 of the arm 13 and the mounting portion 25 of the substrate 14 and is prevented from coming off by the retaining material 30c, the stopper 29 of the stopper plate 16 The movement of the shaft 30 to the proximal end side is restricted by the head portion 30b.

As another modification, in the above embodiment, the stopper 29 is provided on the stop plate 16, and the stopper 29 hits the shaft 30 in the state where the stirring blade 3 is attached to the arm 13, so that the base of the stop plate 16 with respect to the substrate 14 Although the movement to the end side is restricted, the forming position and shape of the stopper 29 can be changed as appropriate. Further, if it is possible to restrict the movement of the stop plate 16 to the base end side with respect to the substrate 14 by hitting the shaft 30 with a part of the stop plate 16, the installation of the stopper 29 may be omitted in some cases. In other words, the base end portion itself of the stop plate 16 may be used as the stopper 29.

Further, in the above embodiment, the number of fixing pins 26 to be installed and the installation position can be changed as appropriate. A shaft portion insertion hole 27 may be provided in the blade plate 15 and an engagement hole 28 may be provided in the stop plate 16 according to the installation location of the fixing pin 26.

Further, in the above embodiment, the receiving portion 20d is provided on the second boss material 20 in order to fix the arm 13 to the stirring shaft 10, but this is not essential. In that case, screw holes 19c may be formed in both flat plate portions 19b of the first boss material 19, and through holes 20c may be formed in both flat plate portions 20b of the second boss material 20. Then, the flat plate portions 19b and 20b of the boss materials 19 and 20 may be overlapped with each other and fixed with bolts 21 respectively.

Further, in the above-described embodiment, the stirring device 1 is a steam kneader, but it can be similarly applied to other stirring devices. Further, the material to be agitated is not limited to the food material.

1 Stirrer 2 Treatment tank (2a: end wall)
3 Stirring blade 4 Hopper 5 Steam jacket 6 Steam inlet valve 7 Steam supply path 8 Steam trap 9 Drain discharge path 10 Stirring shaft 11 Drive box 12 Operation panel 13 Arm (13a: Arm body)
14 Substrate 15 Blade plate (15a: Inclined surface)
16 Stop plate (16a: notch)
17 Boss part 18 Blade holding part (18a: Blade holding piece, 18b: Shaft hole)
19 First boss material (19a: substantially semi-cylindrical part, 19b: flat plate part, 19c: screw hole)
20 Second boss material (20a: substantially semi-cylindrical part, 20b: flat plate part, 20c: through hole, 20d: receiving part, 20e: receiving groove)
21 Bolt 22 Pin accommodating hole 23 Coil spring 24 Pressing pin 25 Mounting part (25a: Extension part, 25b: Shaft hole)
26 Fixing pin, fixing protrusion (26a: first shaft part, 26b: second shaft part, 26c: head)
27 Shaft insertion hole (27a: round hole, 27b: rectangular hole)
28 Engagement hole (28a: release hole, 28b: fixing hole)
29 Stopper 30 Shaft (30a: spindle, 30b: head, 30c: retaining material, 30d: support shaft)

Claims (6)

In a stirring device in which a stirring blade is attached to a stirring shaft via an arm and agitates an object to be agitated by rotation of the stirring shaft, the stirring blade includes a substrate, a blade plate, and a stop plate, and the stirring blade is provided with respect to a substrate held by the arm. The structure is such that the blade plate can be attached and detached with a stopper plate.
The base end of the arm is fixed to the stirring shaft, while the tip is provided with a blade holding portion for holding the stirring blade, and the blade holding portion is provided along the direction orthogonal to the axis of the arm tip. Shaft holes are formed
The board is provided with a mounting portion for the blade holding portion of the arm at the base end portion, and a shaft hole is also formed in this mounting portion along the longitudinal direction of the board .
A fixing protrusion is provided on one of the substrate and the stop plate, and an engagement hole for the fixing protrusion is formed on the other.
The engaging hole includes a release hole into which the tip of the fixing protrusion can be inserted and removed, and a fixing hole connected to the release hole.
The fixing protrusion has a head at the tip of the shaft, and the head has a shape and size that passes through the release hole of the engagement hole but does not pass through the fixing hole.
A state in which the shaft portion of the fixed protrusion is fitted into the shaft portion insertion hole provided in the blade plate, and the engagement hole is arranged on the shaft portion of the fixed protrusion via the release hole, and the plates are overlapped with each other. Then, the stop plate is slid with respect to the substrate, and the fixing hole of the engaging hole is fitted and engaged with the shaft portion of the fixing protrusion.
By passing the shaft through each shaft hole of the blade holding part of the arm and the mounting part of the board, the board is held by the arm and the sliding of the stop plate with the board in the disengagement direction is restricted by the shaft. The stirring blade attachment / detachment structure is characterized by this. The fixed protrusions include a first shaft portion that is fitted into the shaft portion insertion hole of the blade plate, a second shaft portion having a diameter smaller than that of the first shaft portion, and a head portion having a diameter larger than that of the second shaft portion. Consists of fixing pins with
The engaging hole has a shape in which the release hole, which is larger than the head of the fixing pin, and the fixing hole, which is narrower than the release hole and extends outward from the release hole, are connected to each other.
A state in which the shaft portion insertion hole of the blade plate is fitted into the first shaft portion of the fixing pin, the engaging hole is arranged in the second shaft portion of the fixing pin via the release hole, and the respective plates are overlapped. Then, the stop plate is slid toward the tip side with respect to the substrate, and the fixing hole of the engaging hole is fitted and engaged with the second shaft portion of the fixing pin.
By passing the shaft through each shaft hole of the blade holding part of the arm and the mounting part of the board, the board is held by the arm and the slide of the stopper plate to the board toward the base end side is restricted by the shaft. The stirring blade attachment / detachment structure according to claim 1. While the fixing protrusion is provided on the substrate, the engaging hole is formed on the stop plate.
The engaging hole has a fixing hole extending from the release hole toward the base end side of the stop plate.
The base end portion of the substrate is provided with the mounting portion at the center portion in the longitudinal direction of the substrate, while the base end portion of the stop plate is substantially outside the mounting portion in the longitudinal direction with respect to the plate surface of the stop plate. A stopper is provided vertically,
The shaft includes a spindle that is fitted into each shaft hole of the blade holding portion of the arm and the mounting portion of the board, a head that has a diameter larger than each of the shaft holes and is provided at the base end of the spindle, and the tip of the spindle. Equipped with a retaining material provided in the part,
The stopper of the stop plate is restricted from moving to the base end side by the head of the shaft while the shaft is penetrated through each shaft hole of the blade holding part of the arm and the mounting part of the board and is prevented from coming off by the retaining material. The stirring blade attachment / detachment structure according to claim 1 or 2, wherein the stirring blade is attached / detached. While the fixing protrusion is provided on the stop plate, the engaging hole is formed on the substrate.
The engaging hole has a fixing hole extending from the release hole toward the tip end side of the substrate.
The base end portion of the substrate is provided with the mounting portion at the center portion in the longitudinal direction of the substrate, while the base end portion of the stop plate is substantially outside the mounting portion in the longitudinal direction with respect to the plate surface of the stop plate. A stopper is provided vertically,
The shaft includes a spindle that is fitted into each shaft hole of the blade holding portion of the arm and the mounting portion of the board, a head that has a diameter larger than each of the shaft holes and is provided at the base end of the spindle, and the tip of the spindle. Equipped with a retaining material provided in the part,
The stopper of the stop plate is restricted from moving to the base end side by the head of the shaft while the shaft is penetrated through each shaft hole of the blade holding part of the arm and the mounting part of the board and is prevented from coming off by the retaining material. The stirring blade attachment / detachment structure according to claim 1 or 2, wherein the stirring blade is attached / detached. The feature is that there is a gap between the stopper of the stop plate and the base end of the blade plate and the substrate in a state where the fixing hole of the engaging hole is engaged with the shaft portion of the fixing protrusion. The stirring blade attachment / detachment structure according to claim 3 or 4. Instead of forming a shaft hole in the blade holding portion of the arm, the insertion portion of the mounting portion of the board into the shaft hole is projected so that the base end portion of the shaft is integrally provided.
Instead of forming a shaft hole in the mounting portion of the board, the insertion portion of the blade holding portion of the arm into the shaft hole is projected so that the base end portion of the shaft is integrally provided. The stirring blade attachment / detachment structure according to any one of claims 1 to 5.

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