JP4887274B2 - Foreign matter removal device - Google Patents

Description

  The present invention relates to a foreign matter removing apparatus.

  It is important to remove foreign substances adhering to and mixed in parts and finished products in various manufacturing processes, and many methods are known. As a simple foreign matter removing method, there is a method of removing foreign matter with a hand or a brush while visually checking the object. Industrially, there are many cases in which an object is immersed in a cleaning liquid, an object surface is automatically cleaned by a brush, or foreign objects are removed by jetting gas or liquid onto the object.

  However, in order to remove foreign matter from objects having complicated structures or special forms, a foreign matter removal method corresponding to each object or attached foreign matter is considered. For example, Patent Document 1 discloses a mold foreign matter removing apparatus. Many of the molds have a complicated structure. On the other hand, if foreign matter adheres to the product, the dimensional accuracy of the product decreases, so foreign matter removal is an important issue. Furthermore, in order to increase the productivity of the mold, it is necessary to shorten the time for removing foreign matter as much as possible. Therefore, Patent Document 1 proposes a robot having an arm provided with a scraper, a brush, and an ejector at the tip. Thereby, it is said that the foreign matter adhering to the mold can be quickly and completely removed.

  Patent Document 2 discloses a foreign substance removing device for tubes (short pipes) arranged continuously. This foreign matter removing device is arranged in a row, and the plastic-coated tubes that are carried in are discharged in a row, guided to the sealed chamber, and air is injected into the tubes to peel off the foreign matters. The separated foreign matter is sucked together with air from the lower part of the sealed chamber to remove the foreign matter.

Patent Document 3 discloses an apparatus for continuously removing foreign matters such as a resin flash burr adhering to a semiconductor integrated circuit device. Also in this foreign matter removing apparatus, foreign matter is peeled off by spraying air from a plurality of nozzles to a semiconductor integrated circuit device that is continuously carried in, and sucked by a suction device disposed below the semiconductor integrated circuit device mounting jig. Yes. Then, the optimum foreign matter removal is executed while controlling the entire operation such as the amount of air jetted by the nozzle, the jetting direction, and the moving speed of the semiconductor integrated circuit device mounting jig.
JP 2005-319351 A JP 2007-175678 A JP 09-27506 A

  As described above, there are various types of foreign matter removing apparatuses for parts and products in the manufacturing process depending on the object and the purpose of removing foreign substances. However, it has a flat structure like a can lid, and the articles that are packed, stored, transported, etc. are separated one by one in the packing process at the manufacturing stage and the unpacking process at the use stage. In this way, foreign substances that are pinched or adhered to the surface of the can lid are removed. In particular, in the process of unpacking and attaching the can lid that has been overlaid and attaching it to the can body, if foreign matter is mixed in the overlapped part, there is a risk of foreign matter entering the can. There is a need for complete removal. In addition, the overlapped can lids may cause a piece of packing paper or dust to be caught between the overlapping portions when unpacking. The foreign matter sandwiched between the one end and the overlapping portion is not easy to drop off, and is brought to the can lid attaching process to the can body, and may be mixed into the can. In the food industry and the like, the contents of cans are often foods, and such foreign substances need to be completely removed before that.

  If the can lid is unpacked and has a sterilization process before use, the overlapped can lids are separated one by one, and the front and back are sterilized. it can. However, there may be a case where the sterilization of the can lid that has been sterilized in the can lid manufacturing process may not be performed again. In such a case, the opened can lid is immediately transferred to the can lid attaching step to the can body. In this case, it is necessary to completely remove the foreign matter adhering to the can lid transferred to the can lid attaching step to the can body. In the can lid manufacturing stage, even if foreign matter is completely removed before packing, if foreign matter such as broken pieces of packing material is mixed during packing and unpacking, these can be done immediately before the can lid mounting process on the can body. It is necessary to remove foreign matter. However, it is a very inefficient operation to separate the can lids one by one and remove the foreign matters by air injection or the like.

  In view of the above problems, an object of the present invention is to provide a foreign matter removing apparatus capable of continuously removing foreign matter sandwiched between gaps of a can lid that is being transported while being superposed.

In order to solve the above problems, the present inventors have completed the following invention.
The present invention is a foreign matter removing apparatus for removing foreign matter sandwiched in a gap between the can lids while continuously transferring the overlapped can lids in the transfer path, and curving the transfer path by bending it. And a dust removing device arranged on the outer peripheral side of the curved portion.

  In a preferred aspect of the present invention, the foreign matter removing apparatus is characterized in that the curved portion has a plurality of locations in the transfer path, and at least two curved portions are curved in different directions.

  In a preferred aspect of the present invention, the foreign matter removing apparatus is characterized in that the transfer path is configured to restrict movement of the stacked can lids in an outer peripheral direction.

  In a preferred aspect of the present invention, the transfer path has a structure in which a plurality of bars or tubes are arranged in parallel, and the bars or tubes arranged in parallel are formed so as to inscribe the overlapped can lids. The foreign matter removing apparatus according to the present invention.

  In a preferred aspect of the present invention, the foreign matter removing apparatus is characterized in that the transfer path is a tubular body that is transferred with the can lid overlapped with the inside of the transfer path, and at least a wall surface of the curved portion has an opening. .

  In a preferred aspect of the present invention, the foreign matter removing apparatus is characterized in that the transfer path has a higher inlet side than the outlet side, and the can lid is transferred by gravity.

  A preferable aspect of the present invention is the foreign matter removing apparatus comprising pressing means for pressing the can lid from the entrance side of the transfer path.

  Preferably, the present invention provides a can lid fall prevention member disposed at the foremost part, the rearmost part or the middle of the row of the can lids stacked in the transfer path, and having a greater transfer resistance in the transfer path than the can lid. The foreign matter removing apparatus is provided.

  In a preferred aspect of the present invention, the foreign matter removing apparatus is provided with a transfer speed control means for controlling a transfer speed of the can lid at an outlet of the transfer path.

  ADVANTAGE OF THE INVENTION According to this invention, the foreign material removal apparatus which can remove continuously the foreign material currently clamped by the gap | interval from the can lid in the state of being piled up can be provided.

  The foreign matter removing device of the present invention is a device that removes foreign matter sandwiched in the gap between the can lids while continuously transferring the overlapped can lids in the transfer path. And a dust removing device is disposed on the outer peripheral side of the curved portion.

  The transfer path of the can lids has a structure in which a plurality of stacked can lids move in the direction of being overlapped in the transfer path in a row while being overlapped. At this time, the can lid is restricted so that the can lid cannot freely move in the outer peripheral direction in the transfer path. In other words, the can lids that are overlapped in a row are continuously transported while being guided by the transfer passage in the transfer path having the curved portion, and are almost in close contact with the previous can lid. A transfer path is formed in the front. For example, in the case of a circular can lid, the stacked can lids have a cylindrical shape, and a tubular body such as a pipe (tube) into which the cylinder can be inserted without a gap can be used as a transfer path. When a normal pipe is used, it is necessary to form an opening in the wall surface of the curved portion described above. This is because a dust removing device is disposed in the curved portion to secure a foreign substance passage when the foreign matter held between the can lids is removed by the dust removing device. For this reason, the opening has a structure in which a plurality of small holes and slits that allow the expected foreign matter to pass therethrough or a relatively large hole formed in the pipe with a mesh of eyes larger than the assumed foreign matter. It may be a structure. The tubular body may be a metal or plastic pipe or tube, or a net pipe.

  As a preferred form of the transfer path, a plurality of rods, strips or tubes (hereinafter referred to as rods) are arranged in parallel, and the stacked can lids are formed so as to be inscribed in the rods arranged in parallel. There is. Although the number of bars and the like arranged in parallel may be plural, about 2 to 6 are preferable, and 3 to 5 are particularly preferable. And the cross-sectional shape which these several bars etc. make becomes a triangle, a square, a pentagon etc. which include the outer peripheral surface of a can lid according to the number. Any material such as a rod may be used, and examples thereof include metal and plastic round bars, square bars, pipes, strips, ropes, and the like. In addition, it is preferable that these sticks etc. are slippery in the contact part with a can lid, and it is especially preferable that it is smooth with respect to the moving direction of a can lid.

  In addition, the transfer path may be one using a part of a pipe such as a kite, or a belt made of rubber or the like curved in the width direction like a belt of a belt conveyor. The space formed by the rods, etc., moves freely in the outer circumferential direction with the individual can lids overlapped when the stacked can lid cylinders are inserted. It is sufficient if the structure is such that it cannot be removed from the transfer path formed by, for example. In this case, in the transfer path such as a basket, the drop of the can lid is regulated by utilizing the action of gravity. Usually, the transfer path does not move and only the row of can lids moves in the transfer path. However, the transfer path and the can lid move at the same time so that the can lid can be transferred. Also good. In this case, the contact surface of the transfer path with the can lid need not be smooth.

  The transfer path has a curved portion. It is preferable that there are a plurality of curved portions in the transfer path, and at least two curved portions are curved in different directions. Usually, the curved portions are provided at 2 to 6 locations, preferably 3 to 4 locations, and are curved in different directions. A dust removing device is disposed on the outer peripheral side of each curved portion, and foreign matters such as dust, paper pieces, and paper dust are removed by the curved portion.

  As the dust remover, an air suction dust collector, an air jet dust remover, or a dust remover provided with both of them can be used. A dust removing device provided with an air suction type dust collector is a preferable dust removing device because it sucks in and removes foreign matter adhering to and sandwiching the can lid. The dust collector is arranged on the outer peripheral side of the curved portion of the transfer path. When the transfer path is curved, the cylinder formed by the row of can lids to be transferred is also bent along the transfer path. If it does so, the cylinder which the row | line | column of can lids will produce a clearance gap in a can lid on the outer peripheral side of a curved part. When the gap is generated, the foreign matter held between the can lids loses the holding force of the holding and can move. It is easy to remove foreign substances in such a state with a dust removing device. In particular, foreign matter can be easily removed by suction from the outer peripheral side of the curved portion of the transfer path with a dust collector.

  Here, foreign matter on the outer peripheral side of the curved portion of the column made by the can lid can be easily removed, but foreign matter on the inner peripheral side of the curved portion may not be easily removed. For this reason, it is preferable that a plurality of curved portions of the transfer path are formed and the curved directions of the curved portions are different from each other. Then, foreign matter on the outer peripheral side of the curved part of the column made by the can lid has gaps in the different side directions of the can lid at each curved part, and the foreign matter sandwiched in each side direction can be easily removed. it can.

  Normally, the can lids are overlapped into a columnar shape and move while sliding in the transfer path. In this case, the driving force for moving the can lid may be gravity, or may be a pressing force from the inlet side of the transfer path, or both of them may be used in combination. When gravity is used as the driving force, the transfer path is preferably inclined such that the inlet side is higher than the outlet side and the inlet side is always higher from the inlet to the outlet. Furthermore, it is preferable that the slope on the inlet side is larger than the slope on the outlet side. Further, it is preferable that the surface of the transfer path in contact with the can lid is smooth and the can lid is slippery. By adopting such a structure, the can lid moves so as to drop by gravity in the transfer path, and as it is closer to the entrance side of the transfer path, it receives force in the moving direction due to gravity, so it is continuous. The row of can lids can move without leaving the can lid on the downstream side in the movement direction, which is the previous can lid. If the slope on the downstream side from the upstream side of the transfer path cannot be moderated, it is preferable to increase the movement resistance of the transfer path and can lid in the downstream part. As a method of increasing the movement resistance, the cross section of the transfer path is slightly reduced to make the movement of the can lid tight, or the surface of the transfer path is made rough to increase the friction resistance of the contact surface with the can lid. A large material may be pasted.

  If it is a foreign substance removal apparatus provided with a pressing means for pressing the can lid from the entrance side of the transfer path, it is not necessary to consider the height difference between the entrance side and the exit side. Rather, if there is a point where the can lid falls to the lower part with a steep slope in the transfer path, the front can lid drops rapidly while moving as a continuous row of can lids, May leave. If it does so, there is a possibility that the can lid loses its support, falls down in the transfer path and cannot move, or falls off the transfer path. For this reason, when it is necessary to provide a steep slope in the transfer path, it is preferable to increase the movement resistance of the transfer path and the can lid in this part. As a method of increasing the movement resistance, the cross section of the transfer path is slightly reduced to make the movement of the can lid tight, or the surface of the transfer path is made rough to increase the friction resistance of the contact surface with the can lid. A large material may be pasted.

  The transfer speed that controls the transfer speed of the can lid at the exit of the transfer path, regardless of whether it is a movement system that uses a natural drop force due to gravity or a movement system that uses a pressing force from the inlet side If the control means is provided and the transfer speed control means at the outlet controls the movement speed of the can lids, the can lids moving in an overlapping manner are separated in the middle and fall down or fall out of the transfer path There is nothing to do. As the transfer speed control means in this case, a means for increasing the movement resistance of the can lid may be adopted.

  When the transfer is started by introducing the overlapped row of can lids into the transfer path. If there is nothing in front of the can lid located at the forefront, there is a risk of falling to the front side. If the first can lid falls, the succeeding can lid also falls, so that the normal row of can lids cannot be moved. Therefore, it is preferable that the foreign matter removing apparatus includes a can lid fall prevention member having a larger transfer resistance in the transfer path than the can lid. This can lid fall prevention member is arranged at the foremost part of the row of the can lids stacked in the transfer path so that the subsequent can lids can easily follow continuously. Resistance is increasing. And this can lid fall prevention member does not fall like a can lid even if there is nothing before during movement. As a specific shape of the can lid fall prevention member, when the can lid is circular, for example, a sphere, an oval sphere, an egg shape, a half of these, or a halve having the same cross section as the transfer path Examples include a disk (a relatively thin cylinder) having a thickness that does not fall over in the road. When the can lid is not circular, it may be a columnar body having a cross-sectional shape inscribed in the transfer path matched to the shape.

  The fall prevention member can be used to prevent the fall of the can lid at the end of the row of can lids when the operation of removing the foreign matter from the can lid is completed, or the can lid on the way. This is to prevent the can lid from falling to the rear side in the moving direction at the end of the row of can lids. For this reason, the can lid fall-preventing member arranged at the end is expected to have a smaller movement resistance in the transfer path than the can lid. And what is able to act on a front can lid during movement is good. In addition, the can lid fall prevention member provided in the middle of the row of can lids adjusts the movement speed of the can lid and prevents the can lid from overturning when a gap is formed in the row of can lids during transfer. Is. For this reason, it is preferable that the can lid fall prevention member provided in the middle of the row of can lids has the same movement resistance as the can lid. In addition, the can lid fall prevention member provided in the middle of the can lid fall prevention member disposed at the end of the row of can lids, the shape of the can lid fall prevention member disposed at the forefront of the row of can lids described above, and It may be the same.

[Specific Embodiment]
The best mode for carrying out the present invention will be described with reference to the drawings as necessary. Note that it is easy for a person skilled in the art to make other embodiments by changing or correcting the present invention within the scope of the claims, and these changes and modifications are included in the scope of the claims. The following description is an example of a preferred embodiment of the present invention, and does not limit the scope of the claims.

  A specific embodiment of the foreign matter removing apparatus of the present invention is shown in FIG. 1A is a front view of the foreign matter removing apparatus 1, and FIG. 1B is a plan view of a portion A in FIG. In this foreign matter removing apparatus 1, the transfer path is winding three-dimensionally, and as shown in FIG. 4A, the transfer path upstream portion 2 on the front view is left and right at the first bending portion 2a and the second bending portion 2b, respectively. It is formed so as to extend to the near side of the figure with a relatively steep inclination while being curved, and the downstream portion 3 of the transfer path is bent about 90 degrees to the right, and the outlet 3c is inclined more gently than the upstream portion 2 of the transfer path. Head for. As shown in the plan view 1 (b) of the A portion, the transfer path downstream portion 3 is curved left and right at the third curved portion 3a and the fourth curved portion 3b in the plan view.

  In this transfer path, four smooth stainless steel pipes 11 are arranged in parallel so that the cross section perpendicular to the axial direction of the transfer path is a square. Although not shown except for the entrance and exit of the transfer path, a hollow flange is provided for each predetermined distance, and the four pipes 11 are fixed. This transfer path is assumed to transfer a circular can lid, and the square cross section made by the four pipes 11 is inscribed in the square cross section made by the four pipes 11. It is a size.

  2 and 3 show enlarged perspective views of the curved portion of the transfer path upstream portion 2 and the transfer path downstream portion 3 during transfer of the can lid, respectively, but the four pipes 11 are sandwiched between the flanges 9. It is fixed so that it cannot move. The flange 9 fixes each pipe, but the inside is hollow so that the movement of the can lid is not hindered. Department is released. The can lid 8 is superposed and formed into a cylindrical shape, and the can lid 8 moves smoothly in the transfer path while maintaining the cylindrical shape.

  As shown in FIGS. 1 and 2, first dust removal is performed on the outer peripheral sides of the first curved portion 2 a that is curved to the left and the second curved portion 2 b that is curved to the right of the upstream portion 2 of the transfer path. A device 4 and a second dust removing device 5 are arranged. This dust removing device may be an air jet type dust removing device, but a suction type dust removing device is used in order to prevent foreign matter and dust from diffusing around. In addition, although each dust removing device may be installed one by one in each curved portion, a suction nozzle is disposed in each curved portion, and foreign matter is sucked into one suction device main body by a communication tube. Good.

  This transfer path is a natural drop type transfer path using the action of gravity, and the inclination of the upstream part 2 of the transfer path is relatively steep and is about 60 to 30 degrees. And the curve of the 1st curved part 2a of the transfer path and the curve of the 2nd curved part 2b have faced substantially right and left, respectively, seeing from the front view of Fig.1 (a). And since the suction nozzles of the first dust removing device 4 and the second dust removing device 5 are arranged on the outer peripheral side of the curved portion, foreign matters sandwiched between the can lids 8 are sequentially arranged from the right and the left of the can lid 8 respectively. Will suck. In this way, the foreign matter sandwiched between both sides of the can lid 8 can be removed in order.

  Further, the curves of the first bending portion 2a and the second bending portion 2b are not curved so as to protrude upward or downward. If the transfer path is curved so as to be convex upward or downward, the inclination of the transfer path changes greatly at the curved part, and the moving speed of each can lid that moves in the transfer path is likely to change, moving in front. The moving speed of the can lid moving behind the can lid may be slow. When the moving speed of the can lid moving behind becomes slow, a gap is generated between the rows of can lids, and the can lid may fall down. For this reason, it is preferable that the transfer path is curved so as not to protrude upward or downward. Also, if the transfer path is curved downward, the formation of gaps between the can lids 8 at the curved portion described later tends to be uneven, and the foreign matter removal effect may not be sufficient.

  In this foreign matter removing apparatus, a transfer path downstream portion 3 is formed following the transfer path upstream portion 2. The transfer path downstream portion 3 changes direction by approximately 90 degrees from the transfer direction of the transfer path upstream portion 2. In the front view of FIG. 1 (a), the upstream portion 2 of the transfer path is generally directed downward and the downstream portion 3 of the transfer path is directed downward to the right. If this is described with reference to the plan view of FIG. 1B, the transfer path, which is not shown in the figure, is directed almost vertically from the top of the figure and rotated 90 degrees to the right, as shown in the figure. Going to the exit side of the right hand while forming a curved part.

  In this way, when the transfer path that was up and down in the transfer path upstream portion 2 on the front view is directed substantially in the left-right direction at the transfer path downstream portion 3, it was located on the left and right sides in the transfer path upstream portion 2. The surface becomes the upper and lower surfaces of the phase path in the transfer path downstream portion 3. In such a transfer path downstream portion 3, as shown in the plan view of FIG. 1B, if the transfer path downstream portion 3 is bent left and right and foreign matter is sucked from the outside of the bent portion by a dust removing device, the can lid On the other hand, dust can be removed from a direction 90 degrees different from the direction sucked by the dust removing device located in the upstream portion 2 of the transfer path. If such a method is utilized, the horizontal direction of the can lid 8 in the downstream part 3 of a transfer path can be changed arbitrarily.

  For example, in the plan view of FIG. 1B, if the transfer path downstream portion 3 is formed in the vertical direction, the horizontal direction of the can lid 8 is the same as that in the transfer path upstream portion 2. And the change angle of the horizontal direction of the can lid 8 changes according to the change angle with respect to the orthogonal | vertical direction of the advancing direction of the transfer path downstream part 3. FIG. Incidentally, when the transfer path upstream portion 2 is descending at an inclination of 45 degrees, the traveling direction of the transfer path downstream section 3 in FIG. 1B is the horizontal direction, and the angle with respect to the vertical direction is 90 degrees. The horizontal change of the can lid is approximately 45 degrees. If this principle is used, the horizontal direction of the can lid can be arbitrarily changed, so that the angle at which the foreign matter is removed from the can lid can be arbitrarily shifted while forming the curved portion of the downstream portion 3 of the transfer path substantially horizontally. Therefore, the dust can be removed by shifting the dust removing direction by a predetermined angle in accordance with the number of curved portions, that is, the number of dust removing devices. When the desired angle cannot be changed in the horizontal direction of the can lid due to the inclination angle of the transfer path, the curved portion may be formed slightly obliquely from the horizontal.

  FIG. 3 is an enlarged perspective view of a part of the transfer path downstream portion 3. As shown in FIG. 3, the foreign matter removing apparatus 1 includes a third dust removing device 6 and a fourth dust removing device 7. The third curved portion 3a and the fourth curved portion 3b are arranged on the outer peripheral side. In FIG. 3, the third dust removing device 6 and the fourth dust removing device 7 are arranged on two opposing faces of a square column formed by four pipes 11 as the transfer path downstream portion 3. The second surface where the fourth dust removing device 7 is not disposed is the surface where the first dust removing device 4 and the second dust removing device 5 are disposed in the upstream portion 2 of the transfer path. In this way, in this foreign matter removing apparatus 1, dust can be removed by the dust removing device from the four surfaces of the transfer path, in other words, from the four side surfaces at intervals of 90 degrees of the can lid 8.

  As shown in FIG. 1, the transfer path downstream portion 3 is inclined so that the outlet side becomes lower, but is inclined more gently than the transfer path upstream portion 2. For this reason, the movement stress of the can lid due to gravity in the downstream portion 3 of the transfer path is smaller than the movement stress of the can lid due to gravity in the upstream portion 2 of the transfer path. If it is in this way, the can lids that move in the movement path in a columnar shape overlapping each other will always be pushed from the transfer path upstream part 2 to the transfer path downstream part 3, The can lid on the transfer path downstream portion 3 side does not move at a higher speed than the can lid on the transfer path upstream portion 2 side, and the respective can lids are not separated.

  Further, as a method for preventing the can lid from moving away, a transfer speed control means is installed at the transfer path outlet 3c. In this transfer speed control means, an elastic plate is arranged in contact with the side surface of the can lid on the flange arranged at the transfer path outlet 3c. And the pressing force which presses this elastic board to the can lid side can be adjusted. By the pressing force of the elastic plate, the can lid is pressed against the inscribed surface of the transfer path outlet 3c, the movement resistance is increased, and the moving speed of the can lid 8 can be reduced. If the transfer path outlet 3c is provided with a moving speed adjusting means for reducing the moving speed of the can lid, the moving speed of the can lid 8 in the entire transfer path can be controlled, and the can lid 8 can be separated and fall down in the middle of the transfer path. There is no.

  FIG. 4 is a perspective view for explaining the principle of disposing a dust removing device on the outer peripheral side of the curved portion of the transfer path to remove foreign matters mixed in the row of can lids in the transfer path. As can be seen from FIG. 4, the foreign matter 10 such as a piece of paper sandwiched between the overlapping can lids 8 cannot be easily removed if the can lids are in close contact with each other. However, when the overlapping row of can lids 8 moves to the curved portion of the transfer path, only the outside of the curved portion of the overlapping row of can lids 8 due to the difference in length between the inside and the outside of the transfer path in the curved portion. There is a gap. If it does so, the foreign material 10 pinched | interposed into the position equivalent to the curved part outer side of the can lid | cover 8 will be movable by this clearance gap. The nozzle of the dust removing device 5 is arranged facing the outside of the curved portion, and the foreign material 10 that can be moved can be easily sucked and removed.

  The curvature of the bending portion and the angle of bending may be adjusted as appropriate depending on the size and thickness of the can lid, the type of foreign matter, etc., as long as a gap is formed in the can lid 8 so that foreign matter can move. If there are many normal beer cans and juice cans having a thickness of about 4 to 6 Cm, a radius of curvature of 10 to 100 cm and an angle of curvature of 30 to 120 can be used.

  The transfer path of the foreign matter removing apparatus 1 is covered with a cover 12 made of transparent plastic. The cover 12 has a role of a frame for maintaining the shape of the transfer path and mounting the nozzle of the dust removing device, and a function of preventing dust and the like from entering from the outside. The transparent cover is used for easy monitoring of the movement state of the can lid, but it is also possible to monitor the deformation and abnormality of the can lid itself.

  Although the foreign substance removal apparatus of the present invention has been described centering on a circular can lid, it can also be applied to quadrangular and other shapes of can lids. This foreign matter removing apparatus can be used to transfer the can lid and remove the foreign matter at the same time by incorporating the can lid in the can lid manufacturing process in a process of stacking and packaging the can lids. Also, in the can lid use process of inserting the contents into the can and covering the can body, unpacking the can lid that has been overlaid and covering the can body one by one In the middle of the process, the can lid can be transferred and the foreign matter adhering to the can lid can be removed. This foreign matter removing device is intended to remove foreign matter sandwiched between the can lid, but it can also remove foreign matter and dust that are only attached to the side and surface of the can lid. it can.

The front view (a) of the foreign material removal apparatus of this invention, and the top view (b) of A part A perspective view of the curved portion on the upstream side of the foreign matter removing apparatus of the present invention during transfer of the can lid The perspective view of the curved part of the downstream of the foreign material removal apparatus of this invention in can lid transfer Enlarged view of a piece of paper and a dust removal device sandwiched between can lids during transfer in a curved section

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Foreign material removal apparatus 2: Transfer path upstream part 2a: 1st bending part 2b: 2nd bending part 3: Transfer path downstream part 3a: 3rd bending part 3b: 4th bending part 3c: Transfer speed control means (transfer path) Exit)
4: First dust removing device 5: Second dust removing device 6: Third dust removing device 7: Fourth dust removing device 8: Can lid 9: Foreign matter (paper piece)
10: Flange 11: Pipe (round bar)
12: Cover

Claims (9)

A foreign matter removing device that removes foreign matter sandwiched in the gap between the can lids while continuously transferring the overlapped can lids in the transfer path,
A foreign matter removing apparatus characterized in that a curved portion is formed by curving the transfer path, and a dust removing device is disposed on an outer peripheral side of the curved portion.   The foreign matter removing apparatus according to claim 1, wherein the curved portion has a plurality of locations in the transfer path, and at least two curved portions are curved in different directions.   The foreign matter removing apparatus according to claim 1, wherein the transfer path has a structure that restricts movement of the stacked can lids in an outer peripheral direction.   The transfer path has a structure in which a plurality of bars or tubes are arranged in parallel, and the bars or tubes arranged in parallel are formed so as to inscribe the overlapped can lids. Item 4. The foreign matter removing device according to any one of Items 1 to 3.   The said transfer path is a tubular body which the can lid which overlap | superposed the inside overlaps and is transferred, and has an opening in the wall surface of the said curved part at least. The foreign matter removing device described in 1.   The foreign matter removing apparatus according to any one of claims 1 to 5, wherein the transfer path has a structure in which an inlet side is higher than an outlet side, and the can lid is transferred by gravity.   The foreign matter removing apparatus according to any one of claims 1 to 5, further comprising a pressing unit that presses the can lid from an entrance side of the transfer path.   A transfer resistance in the transfer path is larger than that of the can lid, and a can lid fall prevention member is provided in the foremost part, the rearmost part or the middle of the row of the overlapped can lids in the transfer path. The foreign matter removing apparatus according to any one of claims 1 to 7.   The foreign matter removing apparatus according to claim 1, further comprising a transfer speed control unit that controls a transfer speed of the can lid at an outlet of the transfer path.

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