JP2012110838A - Inside cleaning apparatus for square-shaped can - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning apparatus capable of ejecting air, a cleaning solution or the like from a constantly definite distance into a square-shaped can to completely clean the whole area of a can inside by a jet nozzle moving along the inside shape of the can, and capable of rotatably moving the jet nozzle substantially squarely along the can inside with a simple formation.SOLUTION: The main shaft (2a) of a crankshaft (2) is freely rotatably provided at the central position of a fixed internal gear (1), and a small gear (3) loosely fitted to the eccentric shaft (2b) of the crankshaft (2) is engaged with the internal gear (1). A regularly triangular jet nozzle retention plate (4) is fixed to the small gear (3), and a jet instrument (5) projecting from each triangular top (4a) is mounted to the retention plate (4). A drive motor (8) is provided to drive the main shaft (2a) of the crankshaft (2). In the crankshaft (2), a through-hole (2c) communicating from the main shaft (2a) to the eccentric shaft (2b) is bored, and the jet instrument (5) and the eccentric shaft (2b) are connected by a tubular body (7).

Description

  The present invention relates to a cleaning device that cleans the inside of a square can such as a dough can with a metal can, and in particular, for a can with a bottom and an open state in which a top plate is not yet tightened. The present invention relates to an inner surface cleaning device for a square can that removes dust and the like remaining inside the can from the inside of the can and cleans them.

  Conventionally, in the manufacture of square cans such as metal dough cans, foreign substances such as metal powder and dust adhere to the inside of the can during the manufacturing process, so before filling the contents in the can, It is necessary to remove the adhered foreign matter, and various removal means and methods have been performed.

  As these removing means and methods, for example, in Japanese Patent Application Laid-Open No. 2007-209872, a can holding means for holding a can having a base plate wound and an opening on a top plate winding scheduled portion side from the outside of the base plate; A dust removal mechanism that can be inserted into and removed from the inside of the can consisting of the body and the base plate through the opening, and the can holding means are moved in the direction of the dust removal mechanism, and the dust removal mechanism is inserted into and removed from the inside of the can through the opening. And / or a mechanism for moving the dust removing mechanism in the direction of the can and inserting / removing the dust inside the can through the opening, and the dust removing mechanism includes an air outlet and a suction port for ejecting air toward the inside of the can. The can cleaning device is disclosed in which the air ejection port and the suction port move inside the can in accordance with an operation in which the dust removal mechanism is inserted into and removed from the inside of the can through the opening.

JP 2007-209872 A

  In the conventional apparatus and method for cleaning the inside of a can, a jet nozzle is inserted into the center of the can to be cleaned, and air or a cleaning liquid is injected into the can for cleaning, and this is a round can Since the distance between the jet nozzle and the inside of the can body is the same distance over the entire circumference of the can body, the air or cleaning liquid sprayed from the jet nozzle is jetted into the can with uniform pressure, and there is no unevenness in cleaning. Can be cleaned.

  However, in the case of a square can, the distance between the spray nozzle located in the center of the can and the inside of the can body is different over the entire circumference, especially at the four corners in the can body, which is far from the nozzle, and the four corners in the can body are cleaned. Had a problem that could not be done well.

  Thus, in the case of the patent document 1 as well, the square can has a defect that all four corners in the square can body are not cleaned. That is, in the air jet outlet of Patent Document 1, a cross-shaped rib is provided on a rotating disk provided on the tip side of the suction cylinder, the rib has a jet outlet, and one air jet nozzle is provided on the suction cylinder. Air can be ejected to one corner in the joint of the square can body, but the four corners of the square can cannot be cleaned well as described above at the spout provided on the rotating disk. With the air jet nozzle of the trunk, only one corner of the joined portion of the square can can be cleaned well, and still all the four corners of the square can cannot be cleaned well.

  In addition, in Patent Document 1, it is disclosed that a plurality of air ejection nozzles are provided, but this is only provided in the longitudinal direction in which the joint portion extends, and the joint portion of the can body is formed at one corner. For this reason, a plurality of air ejection nozzles are provided in the vertical direction toward one corner of the joint, and no air ejection nozzle is provided at other corners other than the joint.

  Accordingly, the present invention provides an inner surface cleaning for a square can that can be cleaned well all over the can by constantly ejecting air or a cleaning liquid into the can from a certain distance by a jet nozzle that moves along the internal shape of the square can. An object is to provide an apparatus.

  Another object of the present invention is to use a simple construction to rotate the jet nozzle in a substantially square shape along the square can without using a complicated Roule triangle. It is an object of the present invention to provide an inner surface cleaning device for a square can that can move an ejection nozzle in the same manner as the square-shaped movement described in FIG.

  The present invention has been made in order to solve the above problems, and a main shaft (2a) of a crankshaft (2) is rotatably provided at a central position of a fixed internal gear (1). The small gear (3) loosely fitted to the eccentric shaft (2b) of the crankshaft (2) is meshed with the internal gear (1), and the small gear (3) has an equilateral triangular ejection nozzle holding plate ( 4) is fixed, and ejection means (5) projecting from each triangular apex (4a) is mounted on this ejection nozzle holding disk (4) to drive the main shaft (2a) of the crankshaft (2). The crankshaft (2) is provided with a motor (8), and a through hole (2c) communicating from the main shaft (2a) to the eccentric shaft (2b) is formed in the crankshaft (2). The eccentric shaft (2b) is connected by a pipe (7).

  In the present invention, the gear ratio between the internal gear (1) and the small gear (3) is preferably 4: 3.

  The ejection means (5) includes three ejection vertical pipes (52) projecting vertically from the triangular tops (4a) of the ejection nozzle holding plate (4), and upper ends of the ejection vertical pipes (52). It is preferable that at least the ejection horizontal pipe (53) connected to the side and the ejection vertical pipe (52) and a plurality of ejection nozzles (56) provided in the ejection horizontal pipe (53).

  The ejection means (5) connects the ejection vertical pipe (52) and the ejection horizontal pipe (53) via a connection piece (55) having an inclined surface (55a), and is connected to the inclined surface (55a). An ejection nozzle (56) is preferably provided.

  The crankshaft (2) of the present invention consists of a main shaft (2a) and an eccentric shaft (2b), and the eccentric shaft (2b) is eccentric with respect to the main shaft (2a), and is eccentric by rotation of the main shaft (2a). The shaft (2b) rotates eccentrically. In addition, the crankshaft (2) has a through hole (2c) communicating with the center from the main shaft (2a) to the eccentric shaft (2b), and this through hole (2c) is made of air or cleaning liquid. It allows fluid to pass through.

  In the present invention, in order to move the ejection nozzle (56) into the square shape of a square can, a small gear (3) having an equilateral triangular ejection nozzle holding disk (4) attached to a fixed internal gear (1) is meshed. The small gear (3) is rotated by the eccentric shaft (2b) of the crankshaft (2), and is constituted by the jetting means (5) provided on the top of the jet nozzle holding plate (4). ) Spray nozzle (56) can move along the square shape in the square can. As a result, even if the ejection nozzle (56) moves in the same manner as the triangle top of the rouleau, the apparatus of the present invention does not have a sliding portion like a cam and the wear of the apparatus as compared with the camroule triangle of the rouleau. Therefore, the durability is low, the structure is simple, and the production cost is low.

  Further, in the apparatus of the present invention, since the ejection nozzle (56) moves at a predetermined distance along the internal shape of the square can, the pressure of the cleaning fluid sprayed into the square can is in any square can. Also, the cleaning effect is uniform and uniform cleaning can be achieved.

  Furthermore, in the present invention, the corner portion where the base plate is wound and joined to the trunk portion in the square can is cleaned by the ejection nozzle (56) provided on the slope (55a) of the connecting piece (55). Therefore, it is possible to concentrate and clean the corners to which metal powder and dust on the processing are particularly attached.

It is a front view of the inner surface cleaning apparatus for square cans of this invention. It is a perspective view which shows the ejection means in the inner surface cleaning apparatus for square cans of this invention. It is a perspective view which shows the crankshaft of this invention. It is explanatory drawing which shows the relationship between the internal gear of this invention, and a small gear. It is explanatory drawing which shows the locus | trajectory which the ejection nozzle of this invention moves to a square can inner surface. It is explanatory drawing which shows the cleaning state of this invention. It is a perspective view which shows the connection board of this invention. It is sectional drawing which shows the connection piece of this invention.

  Hereinafter, embodiments of the inner surface cleaning device for a square can of the present invention will be described with reference to the drawings.

  In FIG. 1, reference numeral (1) denotes an internal gear fixed to a frame body (not shown) of the apparatus, in which teeth are formed inside a true circular ring.

  (2) is a crankshaft, and this crankshaft (2) is formed of a main shaft (2a) that is driven to rotate and an eccentric shaft (2b) that rotates eccentrically, and the main shaft (2a) is an internal gear (1). It is attached to a frame body (not shown) of the apparatus so as to be concentrically rotatable, and the eccentric shaft (2b) side rotates eccentrically by the rotation of the main shaft (2a). As shown in FIG. 3, the crankshaft (2) is formed with a through hole (2c) that communicates with the center from the main shaft (2a) to the eccentric shaft (2b). As a result, the fluid flowing in from the main shaft (2a) side can flow out from the eccentric shaft (2b) side through the through hole (2c).

  (3) is a small gear which meshes with the internal gear (1). The small gear (3) has the eccentric shaft (2b) loosely fitted at the center thereof, and the main shaft (2a) of the crankshaft (2). Rotates, the small gear (3) loosely fitted to the eccentric shaft (2b) revolves in the internal gear (1) while meshing with the fixed internal gear (1), and the eccentric shaft (2b). Rotate around. At this time, it is preferable to set the gear ratio of the internal gear (1) and the small gear (3) so that the small gear (3) rotates once in three revolutions.

  (4) is an equilateral triangular ejection nozzle holder fixed on the small gear (3), and the center of the ejection nozzle holder (4) is concentric with the center of the small gear (3). The eccentric shaft (2b) of the crankshaft (2) communicates with the center of the ejection nozzle holding disc (4) and the small gear (3) in a loosely fitted state. Further, as shown in FIG. 2, each triangular apex side of the ejection nozzle holding plate (4) is preferably cut into a flat shape in order to make it easier to mount the ejection means (5) described later.

  (5) As shown in FIG.1 and FIG.2, it is the ejection means fixed to each triangular top part of the ejection nozzle holding | maintenance board (4), and this adhered to each triangular top part of the ejection nozzle holding | maintenance board (4). A mounting piece (51), three ejection vertical pipes (52) erected on each of the attachment pieces (51), and an upper end and a central connecting plate (54) of the three ejection vertical pipes (52) Through which the ejection horizontal pipe (53) is connected laterally, the ejection horizontal pipe (53) is connected to the ejection vertical pipe (52), and the ejection vertical pipe (52), It consists of a pipe (53) and a jet nozzle (56) provided on the connecting piece (55).

  Further, the connecting plate (54) has a disc shape, and its center position is located at the upper part of the center of the ejection nozzle holding plate (4), and the center positions of both are made the same. Further, as shown in FIG. 7, the connecting plate (54) has a through hole (54a) that communicates in the direction of the side surface 3 from the lower surface of the center. One end of the ejection horizontal pipe (53) is connected and fixed to each through hole (54a) in the three side surfaces. Accordingly, the connecting plate (54) branches and connects the ejection horizontal pipes (53) in the three horizontal directions, and fluids flowing into the ejection horizontal pipes (53) from the through holes (54a) in the central lower surface. Plays the role of diversion.

  Further, as shown in FIG. 8, the connecting piece (55) fixes the ejection vertical pipe (52) and the ejection horizontal pipe (53) at right angles via the connection piece (55), and A through hole (55b) through which the fluid flowing out from the ejection horizontal pipe (53) flows into the ejection vertical pipe (52) is formed. Further, the connecting piece (55) has an outer upper corner formed on an inclined surface (55a) of approximately 45 °, and a jet nozzle (56) is provided so as to protrude from the inclined surface (55a). Then, the fluid flowing in from the ejection horizontal pipe (53) is ejected obliquely upward by the ejection nozzle (56) of the slope (55a). By the ejection nozzle (56) provided on the slope (55a), the fluid can be intensively ejected into the corner where the body portion and the main plate of the square can are wound, and this portion can be reliably cleaned.

  (6) is a tube that connects the connecting plate (54) of the ejection means (5) and the eccentric shaft (2b) in communication. In connection with this pipe body (6), the connection between the pipe body (6) and the eccentric shaft (2b) is connected via a rotatable pipe joint (7), while the pipe body (6) and the coupling board are connected. (54) is directly connected. By using this pipe joint (7), the pipe joint (7) rotates and copes with different rotations of the eccentric shaft (2b) and the connecting plate (54) of the ejection means (5). ) Can be maintained.

  In addition, the path into which the fluid flows into the ejection means (5) is not limited to the inflow path that flows from the eccentric shaft (2b) into the connecting plate (54) through the tubular body (6). However, the pipe (6) is connected to each jetting horizontal pipe (53) from the pipe joint (7) of the eccentric shaft (2b), and the fluid flowing into the jetting horizontal pipe (53) is connected to the connecting piece (55). It may be configured to flow into each ejection vertical pipe (52). In this case, the connecting plate (54) simply needs to fix and fix the ejection horizontal pipes (53) at the center.

  (8) is a drive motor, (9) is a pulley attached to the main shaft (2a), and (10) is a belt.

  Next, the relationship among the internal gear (1), the crankshaft (2), and the small gear (3) will be described with reference to FIGS. First, in FIG. 4, when the main shaft (2a) of the crankshaft (2) is rotated with the small gear (3) meshed with the internal gear (1), the eccentric shaft (2b) is centered on the main shaft (2a). Eccentric rotation in the direction of arrow (A). As a result, the small gear (3) loosely fitted to the eccentric shaft (2b) revolves in the internal gear (1) while meshing with the fixed internal gear (1), and rotates in the direction of the arrow (b). Moving.

  Further, the gear ratio between the internal gear (1) and the small gear (3) is preferably 4: 3. In this case, the small gear (3) with respect to the internal gear (1) rotates approximately 1 by 3 revolutions, and the ejection nozzle The movement trajectory of (56) with respect to the square can body portion is very similar to the square shape in the square can, particularly the Ito can body portion.

  As a result, the ejection nozzle (56) can move at a constant distance over the entire circumference of the body of the square can (A), and the square can body is sufficiently cleaned.

  Furthermore, the movement trajectory of the ejection nozzle (56) in the square can body will be described in detail with reference to the drawings. When the gear ratio of the internal gear (1) and the small gear (3) is 4: 3, The movement trajectory of the moving ejection nozzle (56) is shown in FIG. In FIG. 5, when the gear ratio is 4: 3, the movement trajectory (c) of the ejection nozzle (56) moving in the barrel of the square can (A) is substantially a square in the barrel of the square can (A). Along the shape, the body moves in a substantially square shape while maintaining a predetermined distance. At this time, in the straight part of the body part, the movement trajectory of the ejection nozzle (56) slightly bulges inward and tends not to move in a straight line, but the bulging error is only within 1 mm with a one-dot can. Therefore, such a variation in the distance between the body portion and the ejection nozzle (56) causes no problem in cleaning. Thus, by making the gear ratio 4: 3, the movement locus (c) of the ejection nozzle (56) is very similar to the rectangular shape of the square can body.

  Next, cleaning of the square can (A) used in the apparatus of the present invention will be described with reference to FIG. In FIG. 6, the square can (A) is, for example, a one-piece can, and the base plate (A2) is wound around one end of the trunk (A1), and the top plate (not shown) is not yet attached to the other end. The other end is open.

  Then, the square can (A) in this state is moved to the cleaning device of the present invention by another can holding device (not shown), and the ejection means (5) is put in the square can (A). set. At this time, the distance between the main plate (A2) and the trunk (A1) of the square can (A) and each of the ejection nozzles (56) is preferably the same. With the square can (A) set, the rotation of the drive motor (8) of the cleaning device is transmitted by the pulley (9) and the belt (10) to rotate the main shaft (2a) of the crankshaft (2). Then, the eccentric shaft (2b) rotates eccentrically and revolves while rotating in the internal gear (1) to which the small gear (3) loosely fitted on the eccentric shaft (2b) is fixed.

  Thereby, the ejection nozzle holding | maintenance board (4) fixed to the small gear (3) and the ejection means (5) also revolve while revolving similarly to the small gear (3). At this time, in the equilateral triangular ejection nozzle holding plate (4), the movement trajectory of each apex thereof is a substantially square trajectory, similar to the Rouleau triangle.

  When the square can (A) is set in the cleaning device, the cleaning device is moved by another moving means (not shown) in the square can (A) held by another can holding device (not shown). It may be moved.

  Thus, since each top part of the ejection nozzle holding plate (4) moves in a square shape, the ejection nozzle (56) arranged upright on each top part of the ejection nozzle holding plate (4) is also shown in FIG. As described above, the robot moves along the movement trajectory (C), and moves while maintaining a predetermined distance set along the quadrilateral in the body (A1) of the square can (A). When the ejection nozzle (56) moves, the optimum distance between the ejection nozzle (56) and the body (A1) depends on the size of the square can (A). ) May be set.

  In this way, the ejection means (5) that moves in the square can (A) is configured so that the ejection nozzle (56) squares the fluid from the ejection nozzle (56) while moving in the square shape in the square can (A). Spouts into the can. This ejected fluid is fluid such as air or cleaning fluid that is press-fitted from the main shaft (2a) of the crankshaft (2), which is the eccentric shaft (2b), pipe joint (7), pipe body (6), connecting board It flows in the order of (54), and reaches the ejection vertical pipe (52) through the connection piece (55) from the ejection horizontal pipe (53) branched in three directions by this connection board (54). And the inside of the main plate (A2) of the square can (A) is cleaned with the fluid ejected from the ejection nozzle (56) of the ejection horizontal pipe (53), and the fluid ejected from the ejection nozzle (56) of the ejection vertical pipe (52) Clean the inside of the body part (A1) and remove the corners of the ground plate (A2) and the body part (A1) that are tightened by the fluid ejected from the ejection nozzle (56) on the slope (55a) of the connecting piece (55). It can be cleaned. Therefore, since the ejection nozzle (56) provided in the ejection means (5) always moves while maintaining a predetermined distance along the shape in the square can (A), the fluid ejected from the ejection nozzle (56) It is always ejected at an equal distance, and the cleaning ability can be maintained at any location in the square can (A).

1 Internal gear 2 Crankshaft
2a Spindle
2b Eccentric shaft
2c Through hole 3 Small gear 4 Jet nozzle holding panel
4a Triangular apex 5 Ejection means
52 Spouted vertical pipe
53 Spouting horizontal pipe
55 connection piece
55a slope
56 Jet nozzle 6 Tubing body 8 Drive motor

Claims (4)

  A main shaft (2a) of the crankshaft (2) is rotatably provided at the center position of the fixed internal gear (1), and a small gear (3) loosely fitted on the eccentric shaft (2b) of the crankshaft (2) is provided. Engage with the internal gear (1), and fix an equilateral triangular ejection nozzle holding disk (4) to the small gear (3), and each triangular apex (4a) on the ejection nozzle holding disk (4). And a drive motor (8) for driving the main shaft (2a) of the crankshaft (2). The main shaft (2a) is provided on the crankshaft (2). A through hole (2c) communicating from the first to the eccentric shaft (2b) is formed, and the jetting means (5) and the eccentric shaft (2b) are connected to each other by a pipe body (6). Internal cleaning device for cans.   The inner surface cleaning device for a square can according to claim 1, wherein a gear ratio between the internal gear (1) and the small gear (3) is 4: 3.   The ejection means (5) includes three ejection vertical pipes (52) projecting vertically from the triangular tops (4a) of the ejection nozzle holding plate (4), and upper ends of the ejection vertical pipes (52). The square can according to claim 1 or 2, comprising at least a jet horizontal pipe (53) connected to the side, and a plurality of jet nozzles (56) provided in the jet vertical pipe (52) and the jet horizontal pipe (53). Inner surface cleaning device.   The jetting means (5) connects the jet vertical pipe (52) and the jet horizontal pipe (53) via a connecting piece (55) having a slope (55a) and jets the slope (55a). The inner surface cleaning device for a square can according to claim 3, further comprising a nozzle (56).