Pan Coating Equipment

Abstract

To provide a pan coating apparatus including a baffle allowing one person to safely detach from the outside of a coating pan in a short time.SOLUTION: A coating pan 2 is provided with: a trunk 5 disposed with vent holes 7; slide frames 31 disposed on a trunk outer peripheral side; and partition plates 32 mounted between the slide frames 31. Baffle plates 10 are installed in a trunk inner peripheral side, and the trunk 5 is formed with baffle mounting holes 36 for inserting the baffle plates 10 from the outside of the pan. The baffle plates 10 are erected on a base plate 45 of a baffle unit 42. The baffle unit 42 is detachably mounted on the outer peripheral side of the trunk 5 by thumb-turn clampers 44 in a state that the baffle plates 10 are inserted into the baffle mounting holes 36.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a pan-type coating apparatus (pan coating apparatus) that performs a coating process on a workpiece contained in a coating pan (rotating drum), and in particular to a pan coating apparatus equipped with a baffle that can be attached and detached from the outside of the coating pan. [Background technology]

[0002] In a pan coating device, objects to be processed such as tablets or powdered granules (hereinafter, the objects to be processed will be described as tablets) are placed in a coating pan (hereinafter, abbreviated as pan as appropriate), and a coating agent is sprayed onto the tablets while the tablets are rolled in the pan, thereby coating the tablets. During the coating process, a processing gas (dry air) for drying the tablets is supplied into the coating pan in parallel with or after the spraying of the coating agent, and the coating agent spread on the tablet surface is dried to form a coating film.

[0003] In such a pan coating device, baffles (baffle plates) are appropriately arranged inside the pan to promote mixing and stirring of the tablets in the pan. Meanwhile, in tablet coating processing, the tablet loading amount may differ for each product or experimental scale, and when the loading amount changes, the relationship between the tablet layer and the baffle also changes. Therefore, if the baffle height is not set appropriately, various problems may occur during the coating process, such as baffle contamination and uneven coating film. Therefore, in order to solve such problems, a baffle whose height can be changed according to the loading amount of tablets has been proposed (Patent Document 1).

[0004] However, although the baffle in Patent Document 1 can be adjusted in height as needed, it is necessary for someone to enter the pan to replace the baffle. For this reason, a system has been proposed that allows the baffle itself to be replaced from outside the pan, eliminating the need to work inside the pan when changing the baffle height, thereby improving workability (Patent Document 2). Also proposed as a system that allows the baffle to be replaced from outside the pan is a system in which a baffle is attached to the inside of the wall of the pan body, and the baffle is replaced along with the wall, as in Patent Document 3. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2011-251207 A [Patent Document 2] JP 2020-192518 A [Patent Document 3] Patent Publication No. 2021-28052 [Patent Document 4] Special Publication No. 7-63608 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the baffle in Patent Document 2 has a protruding base for fixing the baffle inside the pan, which may affect the rolling state of the tablets during coating processing, as the tablets roll inside the pan ride up on the base and disrupt the flow of the tablets. In this regard, the baffle in Patent Document 3 does not have a base-like part, but the entire wall of the pan body is replaced, which causes the problem that the components are large in size and weight (approximately 8 kg for a 150 kg tablet processing machine) and it may be difficult for a single worker to replace the baffle.

[0007] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a pan coating apparatus having a baffle which can be quickly and safely attached and detached by one person from the outside of the coating pan. [Means for solving the problem]

[0008] The pan coating apparatus of the present invention is provided with a coating pan rotatably disposed about a rotation axis and accommodating a workpiece to be coated therein, the coating pan having a body portion provided with an air hole, a pair of frames provided along a circumferential direction on the outer circumferential side of the body portion, and a partition member provided on the outer circumferential side of the body portion and disposed between the two frames at a distance in the circumferential direction, the pan coating apparatus having a baffle plate provided on the inner circumferential side of the body portion and a base plate on which the baffle plate is erected, a baffle mounting hole formed between the two frames of the body portion and allowing the baffle plate to be inserted from outside the coating pan, and a fixing means for fixing the base plate to the coating pan on the outer circumferential side of the body portion with the baffle plate inserted into the baffle mounting hole. The baffle unit includes a rib plate erected on a surface of the base plate opposite to the baffle plate, and the partition member includes a cutout into which the rib plate can be inserted. The rib plate is disposed in the cutout formed in the partition member when the baffle plate is inserted into the baffle mounting hole and the baffle unit is fixed to the outer periphery of the body portion by the fixing means. It is characterized by:

[0009] In the present invention, the baffle plate is inserted into the baffle mounting hole by attaching the baffle unit to the outer periphery of the body of the coating pan from outside the coating pan, and the baffle plate is protruded into the pan. Therefore, the baffle plate can be replaced from outside the coating pan as needed without an operator entering the pan, and the baffle can be replaced without concerns about contamination or operator safety. In addition, the baffle unit consisting of the baffle plate and the base plate is relatively light, so that the baffle replacement work can be performed safely by one person in a short time. Furthermore, the baffle plate is disposed in the pan without any protruding object such as a pedestal, so that the adverse effect of protruding objects on the rolling state of the treated material can be eliminated.

[0010] In the pan coating apparatus, the coating pan may be provided with a baffle mounting section disposed between the two frames facing the baffle mounting hole, to which the baffle unit is attached, the baffle mounting section may be provided with a metal frame fixed to the body section and a synthetic resin block member disposed inside the frame, and the block member may be provided with a baffle insertion hole into which the baffle plate is inserted.

[0011] The baffle unit may be fixed to the outer periphery of the body by the fixing means with the base plate abutting against the plate abutment portion. The baffle insertion hole of the block member may be formed to have a width greater than the thickness of the baffle plate and smaller than the baffle mounting hole of the body.

[0012] In addition , the above The baffle unit may include a plurality of said rib plates and a handle bar attached between said rib plates.

[0013] Alternatively, the fixing means may include a thumb turn clamper provided on the baffle unit side, and a cam case provided on the body side and engaging with the thumb turn clamper when the baffle plate is inserted into the baffle mounting hole. Alternatively, the fixing means may include a toggle clamp provided on the body side, and a clamp pressing part provided on the baffle unit side and pressed by the toggle clamp when the baffle plate is inserted into the baffle mounting hole.

[0014] Furthermore, the pan coating apparatus may be provided with an air supply section which supplies a treatment gas to the workpiece in the coating pan, and an exhaust section which exhausts the treatment gas supplied from the air supply section into the coating pan to the outside of the coating pan, and the frame may be brought into sliding contact with the air supply section and the exhaust section, so that the treatment gas circulates through the air hole located between the two frame sections of the body.

[0015] Also, the body of the coating pan may be formed to have a polygonal cross section, and the partition member may be disposed at the apexes of the polygonal cross section and at a flat portion between the apexes. Effect of the Invention

[0016] According to the baffle for a pan coating apparatus of the present invention, a baffle unit is provided that includes a baffle plate and a base plate on which the baffle plate is erected, and the base plate is fixed to the coating pan by a fixing means while the baffle plate is inserted into a baffle mounting hole formed in the body of the coating pan, so that the baffle plate can be installed in the coating pan by attaching the baffle unit to the outer periphery of the body of the pan from outside the coating pan. This allows the baffle plate to be replaced as needed from outside the pan without an operator entering the coating pan, and enables the baffle replacement work to be performed safely and in a short time by one person without concerns about contamination or operator safety. [Brief description of the drawings]

[0017] [Figure 1] 1 is a side view of a pan coating apparatus according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a front view of the pan coating apparatus of FIG. 1. [Diagram 3] FIG. 2 is an explanatory diagram showing a baffle plate installed in a coating pan. [Figure 4] FIG. 2 is an explanatory view showing the configuration of a ventilation space formed on the outer periphery of a coating pan. [Diagram 5] FIG. 2 is an explanatory diagram showing the configuration of a system baffle equipped in the pan coating apparatus according to the first embodiment of the present invention. [Figure 6] 1A is a plan view of the base frame, and FIG. [Figure 7] 2A is a plan view of the insert block, and FIG. 2B is a cross-sectional view taken along line AA in FIG. [Figure 8]6 is an explanatory diagram showing an installation state of a baffle plate in the system baffle of FIG. 5. FIG. [Figure 9] FIG. 11 is an explanatory diagram showing the configuration of a system baffle provided in a pan coating apparatus according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] (Embodiment 1) Hereinafter, an embodiment of the present invention will be described. Figures 1 and 2 are explanatory diagrams showing the overall configuration of a pan coating apparatus 1 (hereinafter abbreviated as coating apparatus 1) according to the first embodiment of the present invention, with Figure 1 being a side view and Figure 2 being a front view. The coating apparatus 1 in Figures 1 and 2 is of a jacketless type configuration using a so-called full-periphery punching type coating pan (hereinafter abbreviated as pan) 2. Tablets (processed objects) 3 to be coated are accommodated in the pan 2, and coating liquid is sprayed onto the tablets 3 to perform coating processing.

[0019] As shown in FIG. 1, the coating device 1 has a pan 2 rotatably installed in a pan chamber 4a of a housing 4. The pan 2 rotates about a substantially horizontal rotation axis O, and tablets 3 are placed inside the pan 2. The pan 2 has a body 5 with an octagonal cross section and a frustum-shaped conical portion 6 formed at both ends of the body 5. The body 5 is formed of a stainless steel perforated plate (punched plate), and the outer periphery of the body 5 is configured to be ventilated by a large number of ventilation holes 7. A stainless steel baffle plate 10 is installed on the inner periphery of the body 5 (inside the pan) as shown in FIG. 3. In the coating device 1, the baffle plate 10 can be replaced and attached as needed from outside the pan.

[0020] The conical portion 6 is formed of a stainless steel plate material without holes. At one end of the conical portion 6 (left side in FIG. 1: one end side of the pan 2), a front opening 8 is formed through which the tablets 3 are inserted and discharged. At the other end of the conical portion 6 (right side in FIG. 1: the other end side of the pan 2), an end plate 9 is closed. A rotating shaft 11 is attached to the end plate 9, and the rotating shaft 11 extends to the machine room 4b side arranged on the right side of the bread chamber 4a in FIG. 1. A drum rotation mechanism (not shown) using an electric motor is arranged in the machine room 4b, and the pan 2 is chain-driven with the rotation of the motor, rotating around the rotation axis O. The left end side of the pan 2 in FIG. 1 is supported by a roller (not shown).

[0021] In the coating apparatus 1, a pair of sliding frames (frame bodies) 31 are attached to both axial ends (connections with the conical portion 6) of the pan body portion 5 so as to run along the outer periphery of the pan. The sliding frames 31 are formed in an annular shape with a circular outer shape, and two in total, one at the front and one at the back, are provided on the outer periphery of the body portion 5, facing each other in the axial direction. A plurality of partition plates (partition members) 32 are provided between the two sliding frames 31, spaced apart from each other in the circumferential direction. The partition plates 32 are erected on the outer periphery surface 5a of the body portion, and both axial ends of the partition plates 32 are welded to the sliding frames 31, and the bottom surface is welded to the outer periphery surface 5a of the body portion.

[0022] The partition plate 32 is composed of a low-height partition plate 32a (about 20 to 30 mm) and a high-height partition plate 32b (about 80 to 100 mm). The low partition plates 32a are disposed at each vertex 33a of the octagonal cross-section of the body portion 5, and two high partition plates 32b are disposed on the flat portions 33b between the vertices 33a. A plurality of ventilation spaces 34 are formed on the outside of the body portion 5 by the sliding frame 31 and the partition plates 32a and 32b. FIG. 4 is an explanatory diagram showing the configuration of the ventilation spaces 34.

[0023] As shown in FIG. 4, the ventilation space 34 is divided into three sections between the vertices 33a by the partition plates 32a and 32b. That is, in the coating apparatus 1, the ventilation spaces 34 are provided by further dividing the sections between the vertices 33a of the body 5 into a plurality of sections (three in this example). Therefore, in the coating apparatus 1, 3×8=24 independent ventilation spaces 34 are formed around the body 5. The partition plates 32 are installed in the form of ribs between the two sliding frames 31, and each partition plate 32 divides and forms the ventilation space 34 on the outer periphery of the body 5 while ensuring the strength of the sliding frame 31. The partition plate 32b is provided with a cutout 35 for attaching the baffle plate 10 from outside the pan.

[0024] The outer peripheral surface 5a of the body in the ventilation space 34 is provided with a baffle mounting hole 36 for inserting and installing the baffle plate 10. The baffle mounting hole 36 is provided in the circumferential direction so as to penetrate the body 5, and is formed in a state of inclination with respect to the axial direction. In the coating apparatus 1 according to the present invention, a system baffle 41 is further provided in the ventilation space 34, corresponding to the baffle mounting hole 36, and the baffle plate 10 is detachable from the outside of the pan. The system baffle 41 is composed of a baffle unit 42 equipped with the baffle plate 10 and a baffle mounting part 43 provided on the outer peripheral surface 5a of the body, and is disposed facing the baffle mounting hole 36. The baffle unit 42 is attached and fixed to the outer peripheral surface 5a of the body from the outside of the pan by inserting the baffle plate 10 into the baffle mounting hole 36.

[0025] As shown in Fig. 2, the front of the housing 4 (the left side in Fig. 1) has a three-part structure. A front door 12 is provided in the center of the front of the housing, and unit covers 13a, 13b are provided on either side of it. The front door 12 is rotatably supported by one of the unit covers 13a, and is provided so as to be freely opened and closed relative to the housing 4. The unit covers 13a, 13b are also provided so as to be freely opened and closed relative to the housing 4. An inspection door 14 is attached to the front of the front door 12, and a product discharge port 15 for removing products after processing is completed is provided at the bottom of the front door 12.

[0026] The coating apparatus 1 further includes an air intake section 16 that supplies a process gas into the pan 2, and an exhaust section 17 that exhausts the process gas supplied from the air intake section 16 into the pan 2 to the outside of the drum. An air intake hole 18 of the air intake section 16 and an exhaust hole 19 of the exhaust section 17 are provided on the upper surface 4c of the housing, and are connected to an external air intake duct and an external exhaust duct, not shown, respectively. The air intake hole 18 is connected to an air intake chamber 22 via an air intake duct 21 arranged in the housing 4, constituting the air intake section 16. The exhaust hole 19 is connected to an exhaust chamber 24 via an exhaust duct 23 arranged in the housing 4, constituting the exhaust section 17.

[0027] The air supply chamber 22 is disposed adjacent to and facing the body 5 of the pan 2, and has a synthetic resin seal member (not shown) that is in sliding contact with the sliding frame 31. The treatment gas supplied to the air supply section 16 is supplied from the air supply chamber 22 into the pan 2 through the ventilation space 34 and the ventilation hole 7. In the coating apparatus 1, the ventilation space 34 is divided into small compartments by the partition plate 32, so that the seal portion between the sliding frame 31 and the air supply chamber 22 can be made small, improving the sealing performance and reducing the number of seal members.

[0028] Moreover, exhaust chamber 24 is disposed at the lower left of pan 2 in FIG. 2, adjacent to and facing body 5 of pan 2. Exhaust chamber 24 is also provided with a synthetic resin seal member (not shown) that comes into sliding contact with sliding frame 31. The treatment gas supplied into pan 2 escapes through ventilation hole 7 and ventilation space 34 into exhaust chamber 24, and is exhausted to the outside of the apparatus through exhaust duct 23 and exhaust hole 19. In this case as well, ventilation space 34 is divided into small compartments by partition plate 32, so that the seal portion between sliding frame 31 and exhaust chamber 24 can be made small, improving the sealing performance and reducing the number of seal members.

[0029] Further, a spray gun 25 for spraying the coating liquid is disposed in the pan 2. The spray gun 25 is attached to a gun holder 26, inserted into the drum from the front opening 8 of the pan 2, and is provided so as to be freely inserted and removed from the drum from the front side of the device. The coating liquid and spray air are supplied to the spray gun 25 through a hose (not shown) housed in the gun holder 26. The spray gun 25 moves up and down in the pan 2 in a direction perpendicular to the tablet layer surface, and the coating liquid and the like are appropriately sprayed from a predetermined spray position at a desired timing onto the tablets 3 in the pan 2, thereby carrying out the coating process.

[0030] Here, as described above, the coating apparatus 1 is equipped with a system baffle 41 that allows the baffle plate 10 to be replaced and attached from outside the pan. FIG. 5 is an explanatory diagram showing the configuration of the system baffle 41. As shown in FIG. 5, the system baffle 41 is configured to attach a baffle unit 42 equipped with a baffle plate 10 to a baffle attachment part 43 arranged in the ventilation space 34. The baffle unit 42 is fixed to the baffle attachment part 43 on the body part 5 side by a thumb turn clamper 44. The baffle unit 42 is easily attachable to and detachable from the baffle attachment part 43 by operating the thumb turn clamper 44, and is configured so that the baffle plate 10 can be appropriately replaced from outside the pan depending on the amount of tablets 3 charged. In addition, a commercially available product can be appropriately used for the thumb turn clamper 44.

[0031] The baffle unit 42 includes a baffle plate 10 and a band-shaped base plate 45 on which the baffle plate 10 is attached in an upright manner. A rib plate 46 is attached to the base plate 45 on the surface opposite to the baffle plate 10. The rib plate 46 is adapted to fit into the notch 35 of the partition plate 32b when the baffle unit 42 is attached to the baffle attachment portion 43. A handle bar 47 made of a rod-shaped member is attached between the rib plates 46. The handle bar 47 is used as a handle when attaching and detaching the baffle unit 42, and ensures the upright strength of the rib plate 46. In addition, the base plate 45 is provided with four clamper attachment portions 48 to which the thumb turn clampers 44 are attached, protruding in the width direction near both ends in the plate's longitudinal direction.

[0032] On the other hand, the baffle mounting portion 43 includes a metal base frame 51 in the shape of a frame, and an insert block (block member) 52 made of synthetic resin (e.g., polyacetal) that is inserted and disposed inside the base frame 51. Four cam case holders 53 are provided on both sides in the width direction near both ends of the base frame 51, corresponding to the clamper mounting portions 48. A cam case 54 that engages with the thumb turn clamper 44 is attached inside the cam case holder 53. The base frame 51 and the cam case holder 53 are separate parts, and are fixed by welding to the outer circumferential surface 5a of the body portion. The base frame 51 and the cam case holder 53 may be formed as an integrated member.

[0033] FIG. 6 is an explanatory diagram showing the configuration of the base frame 51. The base frame 51 is a frame body with a total length of about 500 mm, a width of about 35 mm, and a height of about 12 mm, and is composed of two side frame parts 55 extending while facing each other in the longitudinal direction, and a block engagement frame 56 attached to the upper surface of both longitudinal ends of the side frame parts 55. The side frame parts 55 are fixed to the outer peripheral surface 5a of the body part so as to sandwich the baffle mounting hole 36. The block engagement frame 56 is arranged at both ends of the side frame parts 55 in a manner that bridges between the two side frame parts 55. The center of the base frame 51 is an opening 57 surrounded by the side frame parts 55 and the block engagement frame 56. The insert block 52 is inserted and arranged in the opening 57.

[0034] 7 is an explanatory diagram showing the configuration of the insert block 52. The insert block 52 is a synthetic resin block with a total length of approximately 500 mm, a width of approximately 30 mm, and a height of approximately 12 mm (at the center), and a baffle insertion slit (baffle insertion hole) 58 is formed in the center in the width direction along the longitudinal direction. The baffle insertion slit 58 is formed with a width of approximately 6 mm and a length of approximately 470 mm, corresponding to the baffle mounting hole 36. When the insert block 52 is placed in the base frame 51, the baffle insertion slit 58 is positioned facing the baffle mounting hole 36 (width approximately 7 mm, length approximately 500 mm).

[0035] In the baffle mounting section 43, the insert block 52 is attached to the base frame 51 in the following manner. First, one end of the insert block 52 is inserted into the opening 57 from above the base frame 51 so as to be inserted under one of the block engagement frames 56a. Steps 61 (height: about 9.5 mm) that are lower than the center portion 59 are formed on both ends of the insert block 52, and the step portions 61 are at a height that allows them to be inserted under the block engagement frame 56 fixed to the outer circumferential surface 5a of the body. Therefore, when attaching the insert block 52, first, the step portion 61a on one end side is inserted under one of the block engagement frames 56a.

[0036] In this case, the longitudinal dimension of the step 61a on one end side is longer than the step 61b on the other end side (for example, 61a: 10 mm, 61b: 4.5 mm), and when the entire step 61a is placed under the block engagement frame 56a, the step 61b on the other end side is long enough to enter the opening 57. Therefore, when the step 61a on one end side is deeply inserted under the block engagement frame 56a, the step 61b on the other end side can be inserted into the opening 57 in that state. Then, the insert block 52 placed in the opening 57 is slid in the longitudinal direction, and the step 61b on the other end side is inserted under the other block engagement frame 56b. As a result, the insert block 52 is disposed in the opening 57.

[0037] Meanwhile, a notch 62 is provided in the side frame portion 55 of the base frame 51 at approximately the center in the longitudinal direction. At the notch 62, the side surface of the insert block 52 is exposed, allowing an operator to grasp the insert block 52 there. Therefore, when removing the insert block 52 from the base frame 51, the side surface of the insert block 52 is held at the notch 62, and the step portions 61 are removed from the block engagement frame 56 while moving the block in the longitudinal direction. This allows the insert block 52 to be easily removed from the opening 57.

[0038] Also, the height dimension H1 of the center portion (plate abutment portion) 59 of the base frame 51 is slightly higher than the height dimension H2 of the upper surface of the block engaging frame 56 arranged on the side frame portion 55 (H1>H2; H1=approximately 12 mm). Therefore, when the insert block 52 is arranged in the opening portion 57, the center portion 59 of the insert block 52 becomes higher than the side frame portion 55 and the block engaging frame 56. In other words, the base frame 51 is arranged in a state where it protrudes slightly upward from the insert block 52.

[0039] In the coating apparatus 1 equipped with such a system baffle 41, the baffle plate 10 is attached from outside the pan 2 in the following procedure. FIG. 8 is an explanatory diagram showing the state in which the baffle plate 10 is attached. Here, the worker first holds the handle bar 47 of the baffle unit 42, and moves the baffle unit 42 close to the body 5 with the baffle plate 10 facing the baffle mounting hole 36. Next, the baffle plate 10 is inserted into the baffle mounting hole 36 while aligning the rib plate 46 with the cutout portion 35 of the partition plate 32b, and the base plate 45 is placed on the insert block 52 of the base frame 51. At this time, the thumb turn clamper 44 is in the OFF state, and the shaft 44a of the thumb turn clamper 44 is inserted into the cam hole 54a of the cam case 54.

[0040] In the coating apparatus 1, the baffle plate 10 has a thickness of about 5 mm, and the baffle insertion slit 58 and the baffle mounting hole 36 are formed to be about 6 mm and about 7 mm, respectively. Therefore, when the baffle plate 10 is inserted into the baffle mounting hole 36, the baffle plate 10 is inserted into the baffle mounting hole 36 while being guided by the baffle insertion slit 58 of the synthetic resin insert block 52. This makes it possible to avoid contact between the baffle plate 10 and the baffle mounting hole 36, both of which are made of metal, when the baffle plate 10 is inserted. In addition, the base plate 45 is placed on the base frame 51 in a state of contact with the upper surface of the center portion 59 of the insert block 52, so that no contact between metals occurs, and therefore damage to parts and members is prevented, and metal powder is prevented.

[0041] Furthermore, when the baffle unit 42 is attached to the body 5, the rib plate 46 is inserted into the cutout 35 of the partition plate 32b, and the cutout 35 is blocked by the rib plate 46 (the gap on both sides is about 0.5 to 1 mm). As a result, the three spaces in the ventilation space 34 partitioned by the partition plate 32b are not in a state of communication without a partition, but are maintained in a state of almost independence in terms of ventilation. Therefore, the process gas supplied from the air supply chamber 22 is supplied from the ventilation space 34 into the pan 2 without disturbing the flow path, and a decrease in ventilation efficiency is suppressed.

[0042] In this way, while closing the cutout portion 35 with the rib plate 46, the baffle plate 10 is inserted into the baffle mounting hole 36, and the base plate 45 is placed on the base frame 51, and then the knob 44b of each thumb turn clamper 44 is turned to the ON position. As a result, the pin 44c attached to the tip of the shaft 44a engages with the cam hole 54a, the thumb turn clamper 44 is locked, and the baffle unit 42 is fixed to the body 5. In the system baffle 41, by employing this thumb turn clamper 44, the baffle unit 42 can be fixed to the baffle mounting portion 43 by a simple knob operation.

[0043] On the other hand, when removing the baffle plate 10 from the pan 2, the baffle unit 42 is detached from the body 5 by performing the reverse procedure to the above. That is, the thumb turn clamper 44 is set to the OFF position to release the engagement of the pin 44c, and in this state, the handle bar 47 is held to pull out the baffle plate 10. In this case as well, the baffle unit 42 can be easily released from the baffle mounting portion 43 by operating the thumb turn clamper 44. As a result, the baffle unit 42 is pulled out of the ventilation space 34 and removed from the body 5 of the pan 2.

[0044] In this way, in pan coating apparatus 1 equipped with system baffle 41, baffle unit 42 is attached to baffle mounting portion 43 from outside pan 2, whereby baffle plate 10 is inserted into baffle mounting hole 36 and protrudes into pan 2. Therefore, baffle plate 10 can be replaced as needed from outside the pan without an operator entering the pan, and baffle replacement can be performed without concerns about contamination or operator safety.

[0045] In addition, because baffle unit 42 does not include a wall of the pan body, the entire unit can be made relatively light (approximately 2 kg for a 150 kg tablet processing machine). This allows an operator to easily attach and detach baffle unit 42 by holding handle bar 47, and compared to conventional replaceable baffles, it allows one person to replace the baffle safely and in a short time.

[0046] Furthermore, the baffle plate 10 attached to the pan 2 is also arranged flat with no protrusions and no base exposed inside the pan. Therefore, the flow of tablets inside the pan is not disturbed by protrusions at the base of the baffle, and adverse effects of protrusions on the rolling condition of the tablets can be eliminated, making it possible to perform the coating process under good rolling conditions, thereby shortening the processing time and improving product quality.

[0047] (Embodiment 2) Next, as a second embodiment of the present invention, a pan coating apparatus equipped with a system baffle using a toggle clamp instead of a thumb turn clamper as a fixing means for the baffle unit will be described. The basic configuration of the pan coating apparatus and the system baffle of this embodiment is the same as that of the coating apparatus 1 and the system baffle 41 of the first embodiment, except for the fixing means for the baffle unit. Therefore, in the following description, the description of the coating apparatus body will be omitted. Also, the same reference numerals will be used for the same parts and members as those of the coating apparatus 1 and the system baffle 41 of the first embodiment, and the description thereof will be omitted.

[0048] 9 is an explanatory diagram showing the configuration of a system baffle 71 according to a second embodiment of the present invention. Like the above-described system baffle 41, the system baffle 71 is also composed of a baffle unit 72 and a baffle mounting portion 73. In this case, as described above, the system baffle 71 uses a toggle clamp 74 as a fixing means for the baffle unit 72, and like the above-described thumb turn clamper, the baffle unit 72 can be fixed to or released from the baffle mounting portion 73 by a simple lever operation.

[0049] Four toggle clamps 74 are attached to the pan 2 side of the system baffle 71. Each toggle clamp 74 is disposed adjacent to the baffle mounting hole 36 of the body 5 and is fixed to the outer circumferential surface 5a of the body by means of screws or the like. When a lever 75 is rotated, the shaft 76 of the toggle clamp 74 moves up and down, and the shaft tip 76a presses and fixes the workpiece that it comes into contact with. As with the thumb turn clamp described above, a commercially available product can be used for the toggle clamp 74 as appropriate.

[0050] The base plate 45 of the baffle unit 72 is provided with clamp pressing portions 77 in place of the clamper mounting portions 48 of the first embodiment. The clamp pressing portions 77 are provided in four locations protruding in the width direction near both longitudinal ends of the base plate 45. Furthermore, the baffle mounting portion 73 of the system baffle 71 is provided with pressing bases 78 in place of the cam case holder 53 of the first embodiment. Four pressing bases 78 are provided on both widthwise sides near both ends of the base frame 51 in a manner corresponding to the clamp pressing portions 77. The pressing bases 78 and the base frame 51 may be integrally configured.

[0051] In the system baffle 71, the baffle unit 72 is attached to the baffle mounting portion 73 from outside the pan 2, so that the baffle plate 10 protrudes into the pan 2. In this case, as in the system baffle 41 of the first embodiment, the baffle unit 72 is grasped using the handle bar 47, and the baffle plate 10 is inserted into the baffle mounting hole 36 of the body 5. At this time, in the system baffle 71, the toggle clamp 74 is kept in an open state. Then, the base plate 45 is placed on the insert block 52 of the base frame 51 while aligning the rib plate 46 with the cutout portion 35 of the partition plate 32b.

[0052] After placing the baffle unit 72 on the baffle mounting portion 73, each toggle clamp 74 is set to a locked state. That is, the lever 75 is operated to operate the shaft 76, and the shaft tip 76a is pressed against the clamp pressing portion 77. As a result, the clamp pressing portion 77 is brought into close contact with the pressing base 78 in a pressed state, and the baffle unit 72 is fixed to the baffle mounting portion 73. On the other hand, when removing the baffle plate 10 from the pan 2, the baffle unit 72 is detached from the body 5 by performing the above-mentioned operations in reverse. That is, the toggle clamps 74 are set to an open state, and from this state, the baffle plate 10 is pulled out by holding the handle bar 47, and the baffle unit 72 is removed from the body 5 of the pan 2.

[0053] In this way, the pan coating apparatus equipped with the system baffle 71 also allows the baffle plate 10 to be replaced as needed from outside the pan without an operator entering the pan, making it possible to replace the baffle without concerns about contamination or operator safety. In addition, the baffle unit 72 is also relatively light (it does not have a thumb turn clamper and is therefore lighter than the baffle unit 42), making it possible for one person to replace the baffle in a short time and safely. Furthermore, the baffle plate 10 is disposed in the pan in a flat state with no protruding objects, allowing the coating process to be performed in a good rolling state.

[0054] The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit and scope of the present invention. For example, in the above embodiment, a thumb turn clamp or toggle clamp is used as a fixing means for the baffle unit, but the fixing means is not limited to the above two, and any other detachable fixing means such as a snap lock, bolts and nuts, etc. Also, the above numerical values ​​of each member are merely examples, and it goes without saying that the configuration of the present invention is not limited to the numerical values.

[0055] Furthermore, in the first embodiment, the cam case holder 53 is welded and fixed to the outer peripheral surface 5a of the body, but it may be detachably attached to the outer peripheral surface 5a of the body by screwing. In this case, the parts may be shared with the pressing base 78 of the second embodiment, and a thumb turn clamper and a toggle clamp may be used depending on the specifications. In addition, in the above-mentioned coating device, the coating pan is provided with a body having an octagonal cross section from the viewpoint of improving the stirring and mixing properties of the tablets, but the present invention is also applicable to a coating device using a coating pan having a cylindrical (circular cross section) body or a coating pan having a polygonal cross section other than an octagon (for example, a hexagon, nonagon, or decagon). [Industrial Applicability]

[0056] The present invention can be applied to coating treatment of confectionery such as gum and chocolate, and other foods, in addition to tablets such as medicines and health foods. [Explanation of symbols]

[0057] 1 Pan Coating Equipment 2 Coating pans 3 Tablets (processed material) 4. Chassis 4a Bread Room 4b Machine room 4c Top of the case 5. Torso 5a Body outer circumferential surface 6 Conical part 7. Ventilation holes 8 Front opening 9 End Plate 10 Baffle plate 11 Rotation axis 12 Front Door 13a, 13b Unit cover 14 Inspection door 15 Product outlet 16 Air supply section 17 Exhaust section 18 Air supply hole 19 Exhaust Vent 21 Air supply duct 22 Air supply chamber 23 Exhaust Duct 24 Exhaust chamber 25 Spray Gun 26 Gun Holder 31 Sliding frame (frame body) 32 Partition plate (partition member) 32a Partition 32b Partition 33a Apex 33b Plane part 34 Ventilation space 35 Notch 36 Baffle mounting hole 41 System Baffle 42 Baffle unit 43 Baffle mounting part 44 Thumb turn clamper 44a Shaft 44b Knob 44c Pin 45 Base Plate 46 Rib Plate 47 Handlebar 48 Clamper mounting part 51 Base Frame 52 Insert block (block member) 53 Cam case holder 54 Cam case 54a Cam hole 55 Side frame 56 Block engagement frame 56a Block engagement frame 56b Block engagement frame 57 Opening 58 Baffle insertion slit (baffle insertion hole) 59 Center part (plate contact part) 61 Multilayered section 61a Stepped section 61b Stepped section 62 Notch 71 System Baffle 72 Baffle unit 73 Baffle mounting part 74 Toggle Clamp 75 Lever 76 Shaft 76a Shaft tip 77 Clamp pressing part 78 Press Base H1 Height dimension of the center of the insert block H2 Height dimension of the upper surface of the block engagement frame of the base frame O Rotation axis

Claims

1. a coating pan that is rotatable about a rotation axis and accommodates an object to be coated therein; The coating pan is a pan coating apparatus having a body portion provided with an air vent, a pair of frames provided along a circumferential direction on an outer circumferential side of the body portion, and a partition member provided on the outer circumferential side of the body portion and disposed between the two frames at a distance in the circumferential direction, A baffle unit including a baffle plate installed on an inner circumferential side of the body portion and a base plate on which the baffle plate is erected; a baffle mounting hole formed between the two frames of the body portion, into which the baffle plate can be inserted from outside the coating pan; a fixing means for fixing the base plate to the coating pan on the outer circumferential side of the body portion with the baffle plate inserted into the baffle mounting hole, The baffle unit includes a rib plate provided upright on a surface of the base plate opposite to the baffle plate, the partition member has a notch into which the rib plate can be inserted, A pan coating apparatus characterized in that the rib plate is positioned within the recess formed in the partition member with the baffle plate inserted into the baffle mounting hole and the baffle unit fixed to the outer periphery of the body portion by the fixing means.

2. 2. The pan coating apparatus of claim 1, the coating pan has a baffle mounting portion provided between the two frames and facing the baffle mounting hole, and to which the baffle unit is attached; the baffle mounting portion has a metal frame fixed to the trunk portion and a synthetic resin block member disposed inside the frame, The block member has a baffle insertion hole into which the baffle plate is inserted.

3. 3. The pan coating apparatus of claim 2, The block member has a plate abutment portion formed to be higher than the height of the frame, The baffle unit is fixed to the outer periphery of the body portion by the fixing means with the base plate abutting against the plate abutment portion.

4. 4. The pan coating apparatus according to claim 2 or 3, A pan coating apparatus characterized in that the baffle insertion hole of the block member is formed to be wider than the thickness of the baffle plate and narrower than the baffle mounting hole of the body portion.

5. In the pan coating apparatus according to any one of claims 1 to 4, The baffle unit comprises a plurality of the rib plates and a handle bar attached between the rib plates.

6. In the pan coating apparatus according to any one of claims 1 to 5, A pan coating apparatus characterized in that the fixing means includes a thumb turn clamper provided on the baffle unit side, and a cam case provided on the body side and engages with the thumb turn clamper when the baffle plate is inserted into the baffle mounting hole.

7. In the pan coating apparatus according to any one of claims 1 to 5, A pan coating apparatus characterized in that the fixing means includes a toggle clamp provided on the body side, and a clamp pressing portion provided on the baffle unit side and pressed by the toggle clamp when the baffle plate is inserted into the baffle mounting hole.

8. In the pan coating apparatus according to any one of claims 1 to 7, The pan coating apparatus further comprises: an air supply unit that supplies a treatment gas to the object to be treated in the coating pan; an exhaust unit that exhausts the treatment gas supplied from the gas supply unit into the coating pan to the outside of the coating pan, A pan coating apparatus characterized in that the frame body is in sliding contact with the air supply section and the exhaust section, and the treatment gas flows through the air hole arranged between the two frame bodies of the body section.

9. In the pan coating apparatus according to any one of claims 1 to 8, The body of the coating pan is formed to have a polygonal cross section, A pan coating apparatus, characterized in that the partition member is disposed at the vertices of the polygonal cross section and at the flat portion between the vertices.

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