JP5056001B2 - Can lid separation supply equipment - Google Patents

Description

  The present invention relates to a can lid supply device that supplies a can lid to a can body that is conveyed on a conveyor, for example, in a food can production line, and in particular, a single can lid from a group of can lids stacked in large numbers. The present invention relates to a can lid separating and supplying apparatus that supplies the separated parts.

When a welded can is used as a food can for storing foodstuffs such as rice cake, rust and corrosion of the side seam portion becomes a problem, so it is necessary to reduce the amount of oxygen in the can as much as possible. To that end, the only way to do this is to fill the can body with hot water and other contents so as not to create a headspace. However, with the current 4-roll seamer used for winding, the contents are fully filled. Even if it is filled, the contents are spilled during the transportation until the can lid is placed, and it is not possible to ensure full filling stably. Therefore, in the past, after the contents were filled and filled, a can lid was manually placed on the can body on the transport path, and the can lid was transported to the tightening portion with the can lid placed thereon to prevent liquid spilling during transport. .
However, it is inefficient by manual work, and there is a risk of burns if the contents are hot water or the like. A method for automatically supplying a can lid to the can main body flowing on the transport line has been studied, and the present invention has been achieved.
As a conventional can lid supply device, for example, a device described in Patent Document 1 is known. That is, this can lid supply device separates the lowest can lid from the can lid storage portion that is stored in a state where a large number of can lids are stacked one above the other, and the can lid group that is stored in the can lid storage portion And a can lid separating mechanism for dropping downward one by one.

The can lid separating mechanism includes a lower operating claw that engages and disengages from the bottom surface of the flange portion of the lowest can lid, and an upper operating claw that engages and disengages from the bottom surface of the flange portion of the second can lid from the bottom. In the state where the second can lid is supported by the upper operating claw, the lower operating claw is separated and the lowermost can lid is dropped.
However, the device described in Patent Document 1 requires a driving device such as a pneumatic cylinder that independently drives the two operating claws, and there is a problem that the equipment is enlarged and the cost is increased.

On the other hand, Patent Document 2 describes a lid opening device having a configuration in which an upper claw and a lower claw are moved together by a single pneumatic cylinder.
In this case, only one drive unit such as a pneumatic cylinder is required, but there is a problem that a motion transmission mechanism such as a lever is necessary and the structure becomes complicated.
Japanese Patent Laid-Open No. 10-146632 JP 54-65162 A

  The present invention has been made to solve the above-described problems of the prior art, and the object of the present invention is to simply separate the can lid and supply the can lid to the can body on the conveyor with a simple configuration. An object of the present invention is to provide a can lid separating and supplying apparatus capable of performing the above.

In order to achieve the above object, the invention according to claim 1 is characterized in that a can lid storage means for storing a plurality of can lids in a stacked state and a can lid group in the can lid storage means. A can lid separating and feeding device comprising a can lid separating means for separating the lower can lids and dropping them one by one downward,
The can lid separating means includes a pair of cover separators arranged parallel to each other so as to be in contact with the outer periphery of the can lid in the can lid storage means, and drive means for linearly moving the cover separator back and forth in the tangential direction of the can lid And comprising
The can lid storage means has an annular wall surrounding the can lid, the annular wall is provided with a notch in which the inner sides of a pair of cover separators are partially exposed to the inside of the annular wall;
Inside side of the cover separator includes a stopper portion which engages withdrawal against the flange lower surface of the can lid of the lowest of the can lids group, between the second can lid flange from the least significant and the least significant of the can lid A knife portion that is inserted into the second can lid and can be engaged and disengaged from the lower surface of the flange portion, and is shifted in a partially overlapping state in the advancing and retreating direction of the cover separator ,
With the configuration in which the stopper part and the knife part come in and out of the notch by the forward and backward movement of the cover separator,
In the can the cut, from a state in which the stopper portion holds the engagement can end group on the flange lower surface of the lowermost can lid is moved to cover the separator to one of the forward and backward direction, the knife portion is the lowest of the can By entering between the flange part of the lid and the second can lid, the stopper part is detached from the flange part of the lowermost can lid, the lowermost can lid is dropped downward, and the cover separator is returned, wherein the knife portion is disengaged from the flange portion of the second can lid was dropped a second can end to the lowest position, that is configured to hold the can lids group the flange portion received by the stopper portion It is characterized by.
In the invention according to claim 2, the can lid separating and supplying device is installed above the conveyor that conveys the can body filled with the contents in the filling portion to the winding and tightening portion. It has a detection means for detecting the can body on the upstream side, and when the can body is detected, the cover separator is driven to separate the can lid and supply it to the can body flowing on the conveyor. .
The invention according to claim 3 has an inclined shooter for guiding the separated can lid, and the shooter is provided with holding means for engaging with the can lid sliding down along the inclination, and the can flowing on the conveyor It is configured that the can lid is detached from the holding means by hooking the winding curl portion of the can lid held by the flange portion of the opening of the main body, and the can lid is automatically placed on the opening of the can main body. Features.

According to the present invention, the cover separator is moved forward and backward in the tangential direction of the can lid, and the cover separator is linearly moved forward and backward by disposing the stopper portion and the knife portion in the forward and backward direction on the cover separator. Only the bottom can lid can be reliably separated.
According to the second aspect of the present invention, the detection means for detecting the can body is provided upstream of the supply position of the can lid, and the cover separator is driven by detecting the passage of the can body. The can lid can be reliably supplied to the main body.
According to the invention according to claim 3, the can lid is automatically placed on the opening of the can body by hooking the winding curl portion of the can lid with the flange portion of the opening of the can body flowing on the conveyor. be able to.

Hereinafter, the present invention will be described based on illustrated embodiments.
1 to 6 show a can lid separating and supplying apparatus according to an embodiment of the present invention.
This can lid separating and supplying apparatus 1 is used in a production line for rice bran food cans as in the conventional example. As shown in FIG. 7, the filling unit 100 is filled with contents such as hot water. The can body 2 is disposed above the conveyor 3 that conveys the can body 2 to the winding portion 200. The can body 2 is a welded can and is filled with the contents so as not to make a head space. The can lid separating and supplying apparatus 1 puts the can lid 10 on the opening of the can body 2 immediately after filling the contents, and transports the can lid 10 to the winding section 200 with the can lid 10 placed thereon. The lid 10 is tightened. This can lid separating and supplying apparatus 1 is used not for a high-speed line but for an ultra-low speed line in a small factory of about 60 cans / minute. Of course, the amount of processing is an example, and it can be applied to a high-speed line. The can body 2 is not limited to a welded can, and various can bodies can be used.
As shown in FIGS. 4 to 6, the can lid separating and supplying apparatus 1 has a can lid storage portion 20 that stores a large number of can lids 10 stacked one above the other, and the can lid storage portion 20. A can lid separating mechanism 30 for separating the lowermost can lid from the can lid group 10N and dropping it one by one; a shooter 40 for guiding the separated can lid 10 to the can body 2 on the conveyor 3; Is provided.
As shown in FIG. 1, the can lid 10 has a disk shape. As shown in FIG. 1, the outer peripheral edge is provided with a flange portion 13 for winding and is stacked up and down, and a gap is formed between the flange portions 13 of the upper and lower can lids. is open.

  As shown in FIGS. 4 to 6, the can lid storage unit 20 includes an annular wall 21 provided on a base 5 supported by a column 4 disposed on the side of the conveyor 3, and an annular wall 21. It has a configuration including four guide rods 22 that are erected. The inner diameter of the annular wall 21 and the diameter of the inscribed circle in contact with the four guide rods 22 are slightly larger than the outer diameter of the can lid 10, and the can lids 10 are stored in a stacked state. Although not particularly shown, the base 5 is provided with an opening that allows the can lid 10 to pass therethrough, and the can lid 10 separated by the can lid separating mechanism 30 falls downward through the opening of the base 5. To do.

The can lid separating mechanism 30 linearly advances and retracts the cover separator 31 in a tangential direction of the can lid 10, and a pair of cover separators 31 arranged in parallel to each other so as to contact the outer periphery of the can lid in the can lid storage unit 20. And a pneumatic cylinder 32 as drive means.
The pair of left and right cover separators 31 are fixed at their rear ends to a drive bracket 37 and are connected to an operating rod 32 a of a pneumatic cylinder 32 via the drive bracket 37. In the illustrated example, the cover separator 31 is driven forward and backward in a direction orthogonal to the flow direction of the conveyor 3 along a pair of linear guides 6 provided on the base 5. The base end of the annular wall 21 of the can lid housing 20 is provided with a notch 23 so that the inner edge of the cover separator 31 can protrude inside the annular wall 21, and the cover separator 31 is located inside the annular wall 21. It is the structure which is partially exposed to.

As shown in FIG. 1, the cover separator 31 includes a stopper portion 33 that engages and disengages from the lower surface of the flange portion 13 of the lowermost can lid 10n1 of the can lid group 10N by the forward and backward movement of the cover separator 31, and the cover separator. The knife part 34 inserted between the flange part 13 of the lowest can lid 10n1 and the second lowest can lid 10n2 by engaging and disengaging from the lower surface of the flange part 13 of the second can lid 10n2 by the forward and backward movement of 31. Is provided.
In this embodiment, as shown in FIG. 2, the cover separator 31 includes a knife plate 35 having a knife portion 34 and a knife bracket 35 to which the knife plate 35 is fastened by a screw 35a. A stopper portion 33 is provided. Since the left and right cover separators 31 have a symmetrical shape and the basic structure is the same, only one cover separator 31 will be described.

  The knife plate 35 includes a rectangular plate main body 351 and a thin knife portion 34 extending laterally over the entire length on one side of the long side of the plate main body 351. The protruding width of the knife part 34 is set to about the width of the winding flange part 13 of the can lid 10, and one end in the longitudinal direction is a sharp edge part 34a. The edge portion 34a has an inclined upper surface, and the boundary between the inclined surface and the rear horizontal surface is a gentle arc surface with no corners. Moreover, the thickness of the knife part 34 is set so that it may become the clearance gap between the flange parts 13 of the upper and lower can lids 10 piled up, or a little small. Even if it is a little larger, it is sufficient if it can enter.

The knife bracket 36 includes a rectangular bracket main body 361 and a stopper 33 that protrudes laterally to one side of the front half of the long side of the bracket main body 361. The width of the bracket body 361 is slightly larger than the width of the plate body 351 of the knife plate 35, and the side edge on the stopper portion 33 side is located slightly on the side of the side edge of the plate body 351.
On the other hand, the front end of the stopper portion 33 coincides with the front end of the bracket body 361, and the upper surface is one step lower than the upper surface of the bracket body 361. The rear end portion of the stopper portion 33 is disposed so as to overlap the edge portion 34a of the knife portion 34 in the vertical direction with a predetermined interval.
A screw hole 36a for fixing to the drive bracket is provided at the rear end portion of the bracket body 361.

  The pneumatic cylinder 32 is fixed to a mounting base 38 extending to the side of the base 5 via a cylinder bracket 38a. As shown in FIGS. 3 (A) and 3 (B), the control valve 9 for controlling the pneumatic cylinder 32 is controlled in its forward / reverse switching operation by the pilot pressure from the two switching valves 7 and 8. ing. As shown in FIG. 4, the switching valve 7 serving as a detection means that takes the drive start timing is disposed on the side of the conveyor 3 on the upstream side of the can lid supply position of the can lid separation and supply device 1. The can body 2 is actuated by pushing a lever 72 extending on the conveyor 3 from the side of 3. As shown in FIG. 5, the switching valve 8 that takes the drive end timing is disposed on the base 5 and is operated by pushing the lever 81 by the operating rod 32 a at the extended end position of the operating rod 32 a of the pneumatic cylinder 32. To do. Of course, the control of the pneumatic cylinder 32 is not limited to such mechanical control, but the can body 2 is detected using a non-contact type sensor and electrically controlled based on the detection signal. It is good also as such a structure.

As shown in FIGS. 6 (A), 8 (A), and (B), the shooter 40 has an inclined guide 41 that is inclined downward at a predetermined angle from the upstream side to the downstream side on the lower surface of the base 5; A holding member 42 provided on the downstream side and a side guide 43 that rises from the left and right edges of the inclined guide 41 and guides the left and right positions of the can lid 10 are provided. The inclined guide 41 has a flat plate configuration, and an upstream end is fixed to the base 5. Further, the downstream end edge 41a is cut out in an arc shape. The angle of the inclined guide 41 is set to about 20 to 30 degrees.
The distance between the left and right side guides 41 is slightly larger than the outer diameter of the can lid 10. A holding portion 43a as a holding means is provided at the tip portion of the side guide 43 so as to be inclined so that the interval gradually becomes narrower than the diameter of the can lid 10. The holding portion 43a engages with the outer periphery of the can lid 10 that slides down along the inclined guide 41 and prevents the can lid 10 from falling (see FIGS. 8B and 8C). The holding portion 43a holds the outer peripheral portion near the center having the maximum diameter in the direction orthogonal to the sliding direction, and about half of the can lid 10 has already passed through the holding portion 43a and protrudes from the shooter 40. It has become a state. The can lid 10 is held obliquely following the inclination of the inclination guide 41, and the position 10f in the inclination direction which is the lowest position is slightly lower than the flange 2a provided at the opening of the can body 2 on the conveyor 3. So that the height is adjusted (see FIG. 6B). The winding curled portion 10a is located at the tip portion 10f. The height adjustment can be adjusted by adjusting the height H of the base 5 from the conveyor 3. Further, the height of the holding portion 43 a is set to about the thickness of the can lid 10, and is significantly lower than the side guide 43.
As shown in FIGS. 8A and 8B, the pressing member 42 has a T-shape from the left and right pressing plate portions 42a, a connecting plate portion 42b that connects the pressing plate portions 42a, and the center of the connecting plate portion 42b. A first arm portion 42c extending upward, a support portion 42d connected to the lower surface of the base 5 so that the upper end of the first arm portion 42c is movably supported, and a second arm portion extending downstream from the support portion 42d. 42e and a weight 42f attached to the tip of the second arm portion 42e. The holding plate part 42a can move in a direction in which it comes into contact with and separates from the holding part 43a depending on the floating state of the support part 42d. The can lid 10 is pressed so as not to get over the holding portion 43a.

Next, the operation of the can lid separating and supplying apparatus will be described with reference mainly to FIG.
FIGS. 1A and 1B show a state in which the pneumatic cylinder 32 is contracted, the cover separator 31 is retracted with respect to the can lid housing portion 20, and the stopper portion 33 located at the tip of the cover separator 31 is at the lowest position. It engages with the lower surface of the flange portion 13 of the can lid 10n1, and holds the can lid group 10N accommodated in the can lid accommodating portion 20.

When the can body 2 sent from the upstream side pushes the lever 72 of the switching valve 7 (see FIG. 4), the directional control valve 9 is switched, the operating rod 32a of the pneumatic cylinder 32 is extended, and the cover separator 31 is moved. Advance. When advanced, the edge part 34a of the knife part 34 of the stopper part 33 supports the flange part 13 of the lowest can lid 10n1, and the flange part 13 of the lowest can lid 10n1 and the second can lid 10n2 As shown in FIGS. 1C to 1E, the stopper 33 is detached from the flange portion 13 of the lowermost can lid 10n1 when inserted in between to support the second can lid 10n2 and further advance. The lowermost can lid 10n1 separates and falls downward, and slides down through the shooter 40 due to its own weight.
As shown in FIGS. 8 (B) and 8 (F), the can lid 10 that has been slid down has its outer peripheral portion engaged with the holding portion 43a at the point when it has slipped about half, and the projecting end portion at the lowest position is the can. It stops at a position lower than the flange portion 2a of the main body 2 and waits for the can main body 2 to be sent.
The flange portion 2a of the can body 2 that has moved on the conveyor 3 is caught by the curled curled portion 10a of the can lid 10 that has been waiting, and the tip portion 10f of the can lid 10 is moved horizontally (FIG. 8C). , (G)). Then, the can lid 10 is lifted against the moment set by the weight 42f with the rear end portion 10g in contact with the inclined guide 41 as a fulcrum, and the outer peripheral portion engaged with the holding portion 43a is It becomes higher than the holding part 43a and comes off. Further, when the rear end portion 10g is disengaged from the downstream end edge 41a of the inclined guide 41, it falls onto the opening of the can body 2 (FIGS. 8D and 8H). If the arcuate guide 41 is cut out at the downstream edge 41a of the inclined guide 41, the can lid 10 can be dropped immediately after it is detached from the holding portion.
The dropped can lid 10 has its chuck wall portion 10b fitted into the inner periphery of the opening of the can body 2, and the can body 2 is sent to the downstream winding tightening portion 200 by the conveyor 3 with the can lid 10 placed thereon. It is done. Therefore, there is no spillage of the contents during conveyance, and it is possible to ensure full filling stably.

Next, the drive bracket 37 fixing the advanced cover separator 31 pushes the lever 81 of the switching valve 8 attached to the base 5 by the advance of the operation rod 32a of the pneumatic cylinder 32, whereby the direction control valve 9 is As a result, the operating rod 32a of the pneumatic cylinder 32 contracts, and the cover separator 31 moves backward.
When the edge part 34a of the knife part 34 reaches the end part of the flange part 13 of the second can lid 10n2 in the middle of the retreat, the stopper part 33 reaches downward, and the edge part 34a becomes the flange of the second can lid 10n2. When detached from the portion 13, the second can lid 10n2 falls to the lowest position, the flange portion 13 is received by the stopper portion 33, and the can lid group 10N is held.
By repeating the above operation, the can lid 10 is automatically supplied to the can body 2 on the conveyor 3.

In the above-described embodiment, the cover separator 31 is moved forward to perform the lid opening operation. However, if the knife portion is disposed forward and the stopper portion is disposed rearward, the cover separator is moved backward to perform the lid opening operation. It is also possible to adopt a configuration such that In short, from the state where the stopper part is engaged with the lowermost can lid and holding the can lid group, the cover separator is moved in one of the forward and backward directions, and the knife part is located between the lowermost can lid and the second can lid. After entering between the flange parts, the stopper part is detached from the flange part of the lowermost can lid, the lowermost can lid is dropped downward, and the cover separator is returned to make the knife part the second can lid. It is sufficient that the second can lid is dropped to the lowest position by being separated from the flange portion, and the flange portion is received by the stopper portion to hold the can lid group.
Moreover, although the food can filled with foodstuffs, such as rice cake, was demonstrated as an example, it can utilize widely for the conveyance line of the can main body filled with the content which may be spilled liquid not only with foodstuffs. Further, the case of full filling has been described, but the present invention can also be applied to a filling amount in which a head space is formed without full filling.

1A to 1E are operation explanatory views of a can lid separating and supplying apparatus according to one embodiment of the present invention. FIG. 2 shows a cover separator used in the can lid separation and supply apparatus of FIG. 1, wherein FIG. 2A is a plan view, FIG. 2B is a front view, FIG. 2C is a right side view, and FIG. It is a bottom view. 3A is a circuit diagram of the pneumatic cylinder, and FIG. 3B is a control timing chart. FIG. 4 is a plan view showing the overall configuration of the can lid separating and supplying apparatus of FIG. FIG. 5 is a front view of the apparatus of FIG. 6A is a side view of the apparatus shown in FIG. 4, and FIG. 6B is a partially enlarged sectional view showing the positional relationship between the held can lid and the can body. FIG. 7 is a schematic configuration diagram of a can winding transportation line in which the can lid separating and supplying apparatus of FIG. 1 is used. FIGS. 8A to 8D are schematic side views for explaining the operation of the shooter in FIG. 6A, and FIGS. 8E to H are the views of FIGS. It is a schematic plan view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Can lid separation supply apparatus 2 Can main body, 2a Flange part 3 Conveyor
4 Strut 5 Base 6 Linear guide 7 Switching valve, 71 Lever 8 Switching valve, 81 Lever
9-way control valve
10 Can lid, 10a Winding curl portion, 10f Tip portion, 10g Rear end portion 10N Can lid group
10n1 Lowermost can lid 10n2 Second can lid 13 Flange portion 20 Can lid storage portion 21 Annular wall, 22 Guide rod, 23 Notch 30 Can lid separation mechanism (can lid separation means)
31 Cover separator 32 Pneumatic cylinder 33 Stopper part 34 Knife part
34a Edge portion 35 Knife plate 36 Knife bracket 37 Drive bracket 351 Plate main body 361 Bracket main body 40 Shuta 41 Inclination guide, 41a Downstream side edge 42 Holding member 42a Holding plate portion, 42b Connecting plate portion, 42c First arm portion,
42d Support part, 42e 2nd arm part, 42f Weight 43 Guide plate, 43a Holding part 100 Filling part 200 Winding part

Claims (3)

Can lid storage means for storing a large number of can lids stacked one above the other, and a can that separates the lowest can lid from the can lid group in the can lid storage means and drops them one by one downward A can lid separating and supplying device comprising a lid separating means,
The can lid separating means includes a pair of cover separators arranged parallel to each other so as to be in contact with the outer periphery of the can lid in the can lid storage means, and drive means for linearly moving the cover separator back and forth in the tangential direction of the can lid And comprising
The can lid storage means has an annular wall surrounding the can lid, the annular wall is provided with a notch in which the inner sides of a pair of cover separators are partially exposed to the inside of the annular wall;
Inside side of the cover separator includes a stopper portion which engages withdrawal against the flange lower surface of the can lid of the lowest of the can lids group, between the second can lid flange from the least significant and the least significant of the can lid A knife portion that is inserted into the second can lid and can be engaged and disengaged from the lower surface of the flange portion, and is shifted in a partially overlapping state in the advancing and retreating direction of the cover separator ,
With the configuration in which the stopper part and the knife part come in and out of the notch by the forward and backward movement of the cover separator,
In the can the cut, from a state in which the stopper portion holds the engagement can end group on the flange lower surface of the lowermost can lid is moved to cover the separator to one of the forward and backward direction, the knife portion is the lowest of the can By entering between the flange part of the lid and the second can lid, the stopper part is detached from the flange part of the lowermost can lid, the lowermost can lid is dropped downward, and the cover separator is returned, wherein the knife portion is disengaged from the flange portion of the second can lid was dropped a second can end to the lowest position, that is configured to hold the can lids group the flange portion received by the stopper portion A can lid separating and feeding apparatus characterized by the above.

  The can lid separation and supply device according to claim 1 is installed above a conveyor that conveys the can body filled with contents in the filling unit to the winding unit, and is upstream of the supply position of the can lid. And a detecting means for detecting the can body, wherein when the can body is detected, the cover separator is driven to separate the can lid and supply it to the can body flowing on the conveyor. The can lid separation supply apparatus according to 1.   An inclined shooter for guiding the separated can lid is provided, and the shooter is provided with holding means for engaging the can lid sliding down along the inclination, and the flange portion of the opening of the can body flowing on the conveyor The can lid separating and supplying device according to claim 2, wherein the can lid is hooked by a curling portion of the can lid to disengage the can lid from the holding means, and the can lid is automatically placed on the opening of the can body.

Images