JP4554028B2 - Outlet member mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spout member mounting device.
[0002]
[Prior art]
Conventionally, packaging containers that contain liquid foods such as milk and soft drinks are provided with caps as spout members attached to the top wall of the packaging container body so that liquid foods can be repeatedly dispensed. Has been.
[0003]
Therefore, a position for attaching a cap on the top wall, that is, a setting attachment position is set. And the cap attachment apparatus as a spout member attachment apparatus which heats the predetermined location of the back side of the said cap, fuse | melts it, and pressed and stuck the said cap to the said setting sticking position is provided. In the cap attaching device, the packaging container main body is conveyed by the base conveyor, and the index table is rotatably arranged facing the base conveyor.
A positioning conveyor is disposed in a predetermined area along the base conveyor. The positioning conveyor has a package holder for holding and positioning each packaging container body at a predetermined pitch on the base conveyor. Arranged. Depending on the type of packaging container, a tab is attached in advance to the set attachment position.
[0004]
And the pocket which hold | maintains each cap is formed in the multiple places of the peripheral part of the said index table. In addition, a cap sticking portion is disposed, and the application head of the cap sticking portion takes the cap out of the pocket, and in a predetermined position on the base conveyor, the packaging container body held by the package holder in the predetermined position. Press to the setting sticking position and stick.
[0005]
[Problems to be solved by the invention]
However, in the conventional cap mounting apparatus, the setting sticking position and the position where the cap is actually stuck, that is, the actual sticking position may not match, and the cap is correctly set sticking position. Can not be attached to.
[0006]
Therefore, it is conceivable to adjust the set sticking position and the actual sticking position by adjusting the position of the package holder with respect to the base conveyor. However, since the packaging container body is not always in the same shape, the set sticking position of each packaging container body held by the package holder varies, whereas the cap sticking part is fixed to the frame. Therefore, the position where the application head presses the cap against the top wall is always constant, and the actual attachment position varies.
[0007]
Therefore, depending on the packaging container main body, the cap cannot be correctly attached to the set attachment position.
[0008]
The present invention solves the problems of the conventional cap mounting device, and provides a spout member mounting device capable of correctly sticking a spout member to a set sticking position for various packaging container bodies. With the goal.
[0009]
[Means for Solving the Problems]
Therefore, in the spout member attaching device of the present invention, the spout member is attached to the transporting means for transporting the packaging container main body and the set sticking position set in the packaging container main body transported by the transporting means. Mounting head for holding, a head holding means for holding the mounting head, a position adjusting means for adjusting the position of the mounting head relative to the head holding means, and the setting sticking position detected by the setting sticking position detecting means. Based on the landing position, an adjustment amount of the position of the mounting head by the position adjustment unit is calculated, an adjustment signal corresponding to the adjustment amount is generated, the adjustment signal is sent to the position adjustment unit, and the position adjustment is performed. And a control device for driving the actuator of the means and moving the mounting head relative to the head holding means.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, a cap attaching device as the spout member attaching device will be described.
[0013]
FIG. 1 is a diagram showing the operation of a cap attaching part in an embodiment of the present invention, FIG. 2 is a first perspective view of a cap attaching device in the embodiment of the present invention, and FIG. 3 is in the embodiment of the present invention. FIG. 4 is a perspective view of a main part of a cap attaching portion in the embodiment of the present invention, and FIG. 5 shows a state in which the application head is held by the head holder in the embodiment of the present invention. FIG. 1 and FIG. 6 are second diagrams showing a holding state of the application head by the head holder in the embodiment of the present invention.
[0014]
In the figure, 12 is a cap handling part for transporting a cap C as a spout member, 15 is an endless belt, and is continuously run by driving a driving means (not shown). _M And a base conveyor as a conveying means for conveying the packaging container P in the direction of arrow A, 16 is the packaging container body P _M The first transport unit 17 serving as a separating means for separating the first transport unit 17 is disposed on the downstream side of the first transport unit 16 in the traveling direction of the base conveyor 15, and the packaging container body P _M 2 is a second transport unit as positioning means for positioning the base on the base conveyor 15.
[0015]
Reference numeral 18 denotes an index table as a cap supply means for indexing and supplying the cap C conveyed by the cap handling section 12, and 19 is a seal section set at a predetermined location on the back surface of the cap C. A burner that heats and melts the packing container body P _M A cap adhering part 22 as a spout member adhering part for adhering the cap C to the setting adhering position of the top wall 21 is arranged facing the second conveying part 17, and This is a camera 22 as a photographing means for photographing the wall 21.
[0016]
In addition, in this Embodiment, although the tab 23 is previously affixed to the said setting sticking position, without sticking the tab 23, it is also possible to stick the cap C directly to the said setting sticking position. it can.
[0017]
A separation conveyor 41 is disposed along the base conveyor 15 in the first transport unit 16, and the separation conveyor 41 is transported on the base conveyor 15 at an arbitrary interval. P _M Are separated one by one and sent out at predetermined intervals.
[0018]
For this purpose, the separation conveyor 41 includes endless belts 43 and 44 disposed on both edges of the base conveyor 15, and each belt 43 and 44 is disposed between the drive pulleys 45 and 46 and the driven pulleys 47 and 48. Respectively. A first drive motor (not shown) is disposed adjacent to the separation conveyor 41, and is disposed between an output pulley of the first drive motor, the drive pulleys 45 and 46, and an idle pulley (not shown). A drive belt is tensioned. Accordingly, when the output pulley is rotated by driving the first drive motor, the drive pulleys 45 and 46 are rotated in the directions of arrows E and F, and the belts 43 and 44 are caused to travel.
[0019]
Here, when the traveling speed of the base conveyor 15 is V0 and the traveling speed of the belts 43 and 44 is V1, the traveling speeds V0 and V1 are:
V0> V1
Is set to be Further, the distance between the belts 43 and 44 depends on the packaging container body P. _M It is set slightly smaller than the width of.
[0020]
Therefore, the packaging container main body P conveyed by the base conveyor 15 at the traveling speed V0. _M Reaches the first conveying section 16, the packaging container body P _M Is sandwiched between the belts 43 and 44 and is transported at the traveling speed V1. _M Is conveyed between the belts 43 and 44, and the subsequent packaging container body P _M Catch up.
[0021]
By the way, a photoelectric switch (not shown) is disposed on the outlet side of the first transport unit 16, and the packaging container body P is formed by the photoelectric switch. _M Is supposed to be detected. And the detection signal by a photoelectric switch is sent to the controller which is not illustrated, and this controller is the packaging container main body P. _M It is determined whether or not has passed through the photoelectric switch. The controller is provided with a packaging container body P. _M If it is determined that has passed the photoelectric switch, the first drive motor is stopped at the first timing, and the belts 43 and 44 are stopped from traveling. As a result, the subsequent packaging container body P _M Is braked by the belts 43 and 44 and stopped on the base conveyor 15.
[0022]
Since the base conveyor 15 continues to travel during this time, the packaging container body P that has passed the photoelectric switch _M Is conveyed in the direction of arrow A as it is.
[0023]
Subsequently, the controller drives the first drive motor at a second timing when a set time has elapsed from the first timing, and starts running of the belts 43 and 44. As a result, the subsequent packaging container body P _M Is conveyed by belts 43 and 44.
[0024]
And the said controller is the packaging container main body P. _M When it is determined that has passed the photoelectric switch, the first drive motor is stopped at the first timing, and the running of the belts 43 and 44 is stopped again. As a result, the subsequent packaging container body P _M Is braked by the belts 43 and 44 and stopped on the base conveyor 15.
[0025]
In this way, the first drive motor is intermittently driven, and the packaging container body P _M Each time a set time elapses after the first transfer unit 16 is fed out from the first transport unit 16 and passes through the photoelectric switch, the subsequent packaging container body P _M Since each is delivered, each packaging container body P _M Is transported on the base conveyor 15 at the set transport pitch p 1 and sent to the second transport unit 17.
[0026]
The second transport unit 17 is set downstream of the first transport unit 16 in the traveling direction of the base conveyor 15. In the second transport unit 17, a transport conveyor 61 is disposed along the base conveyor 15, and the transport conveyor 61 is caused to travel so as to correspond to the position of the cap C in the index table 18. P _M Can be positioned at the packaging container holding position on the conveyor 61.
[0027]
For this purpose, the transport conveyor 61 includes an endless belt 63 disposed on one side edge of the base conveyor 15, and the belt 63 is stretched between a driving pulley 65 and a driven pulley 67. A second drive motor (not shown) is disposed adjacent to the conveyor 61, and a drive belt is provided between the output pulley of the second drive motor, the drive pulley 65, and an idle pulley (not shown). It is stretched. Accordingly, when the output pulley is rotated by driving the second drive motor, the drive pulley 65 is rotated, and accordingly, the driven pulley 67 is rotated in the arrow G direction, and the belt 63 is caused to travel.
[0028]
Further, positioning pieces (tops) 75 as positioning members are formed on the upper side edge of the outer surface of the belt 63 so as to protrude at an equal pitch. In this case, if the positioning pitch of the piece 75 is p2, the positioning pitch p2 is shorter than the conveyance pitch p1, and the packaging container body P _M Longer than the length of.
[0029]
Here, when the traveling speed of the base conveyor 15 is V0 and the traveling speed of the belt 63 is V2, the traveling speeds V0 and V2 are:
V0 <V2
The conveyor 61 is driven at a higher speed than the base conveyor 15.
[0030]
Accordingly, the packaging container main body P fed out from the first transport unit 16 at the transport pitch p1. _M When reaching the second transport unit 17, it hits the piece 75, is accelerated by the transport conveyor 61, and transported at the traveling speed V2 and at the positioning pitch p2.
[0031]
In this way, the packaging container body P _M Is positioned at a predetermined packaging container holding position on the transport conveyor 61 while being transported by the transport conveyor 61.
[0032]
In this case, the transport conveyor 61 is provided with the packaging container body P. _M Since it is arranged on the set sticking position side in the packaging container body P _M Can be positioned at a portion close to the set sticking position. Therefore, the mounting accuracy of the cap C can be increased.
[0033]
In the present embodiment, the packaging container body P _M Is accelerated by the transport conveyor 61, and the packaging container body P in the traveling direction of the base conveyor 15 is _M The upstream end of the container is placed against the piece 75, but the packaging container body P _M Packaging container body P by slowing down _M It is also possible to apply the downstream end of the frame 75 to the piece 75. In that case, the traveling speed V2 of the belt 63 is set lower than the traveling speed V0 of the base conveyor 15.
[0034]
Next, the index table 18 will be described.
[0035]
The index table 18 is rotatably arranged around a shaft (not shown), and includes pockets 36 at a plurality of circumferential positions, in this embodiment, eight positions. Each pocket 36 is formed by a notch having a width sufficient to hold the cap C at both edges.
The index table 18 is intermittently rotated by a third drive motor such as a servo motor (not shown), and the cap C is set and removed while the index table 18 is stopped.
[0036]
Each pocket 36 is sequentially placed in the first station S1 to the eighth station S8 as the index table 18 rotates, and each process for the cap C is performed in each of the first station S1 to the fifth station S5.
[0037]
The first station S1 functions as a cap receiving unit, and the cap C clamped by a cap picker (not shown) is inserted into the pocket 36 in the first station S1. When the cap C is inserted into the pocket 36, the clamp is released.
[0038]
The second station S2 and the third station S3 function as a first preheating unit and a second preheating unit, respectively, and the cap C is heated as a heating medium in the second station S2 and the third station S3. Preheated by air. For this purpose, air nozzles 51 and 52 for blowing heated air onto the back surface of the cap C are disposed below the pockets 36 in the second station S2 and the third station S3, and air nozzles 51 and 52 are supplied from a heating air source (not shown). The heated air is supplied. In the present embodiment, heated air is used as a heating medium, but a gas other than air can also be used.
[0039]
Further, the fourth station S4 functions as a main heating unit, and in the fourth station S4, a seal portion set at a predetermined location on the back surface of the cap C is heated and melted. For this purpose, a burner 19 is disposed in the fourth station S4, and the burner 19 includes a plurality of nozzles (not shown) arranged in a pattern corresponding to the shape of the seal portion. The hydrogen gas and oxygen generated by performing the above are supplied to the burner 19 as a mixed gas and burned. In each nozzle, a micro frame is formed, and the seal portion is accurately melted by each micro frame. In this case, since it is not necessary to use a high-pressure gas container such as a cylinder (not shown), the safety of the cap mounting device can be improved.
[0040]
As described above, since the seal portion is heated after being sufficiently preheated, even if the temperature of the atmosphere in which the cap mounting device is disposed fluctuates, the seal portion is heated under a certain condition. Therefore, the seal portion can be stabilized and melted.
[0041]
The fifth station S5 functions as a cap removal unit, and the cap C is removed from the pocket 36 by the application head 66 described later in the fifth station S5.
[0042]
Further, the sixth station S6 to the eighth station S8 function as a spare part, and the cap C is not conveyed in the sixth station S6 to the eighth station S8.
[0043]
In the present embodiment, the seal portion is heated by the microframe, but the seal portion can also be heated by hot air. Moreover, in this Embodiment, although the seal part is melt | dissolved and the cap C is stuck, the cap C can also be stuck with an adhesive agent.
[0044]
By the way, the packaging container body P _M Is positioned at a predetermined packaging container holding position on the transport conveyor 61, the cap C taken out from the pocket 36 by the application head 66 as the attaching means and the attachment head disposed in the cap attaching portion 20, Attached to the set attachment position of the top wall 21, and the packaging container body P _M Becomes a packaging container P.
[0045]
For this purpose, the cap adhering portion 20 holds the application head 66 above the base conveyor 15 and also has a head holder 53 as a head holding means disposed so as to be movable in the vertical and horizontal directions. A linear guide 54 as a first guide member for guiding the head holder 53 in the horizontal direction, a guide bar unit 55 as a second guide member for guiding the linear guide 54 in the vertical direction, and the application head 66 as the head holder 53. The head positioning device 56 as a reset means for moving the head to the reference position, the adjusting device 57 as a position adjusting means for adjusting the position of the application head 66 relative to the head holder 53, and the head holder 53 Phosphorus moved up and down and horizontally It includes a mechanism 59.
[0046]
The guide bar unit 55 includes elevating rods 112 and 113 extending vertically through guide blocks 114 and 115 fixed to the frame of the cap attaching device, and the lower ends of the elevating rods 112 and 113 are linear. It is fixed to the guide 54. Therefore, as the linear guide 54 moves in the vertical direction, the elevating rods 112 and 113 are moved back and forth (moved in the vertical direction in FIG. 1) with respect to the guide blocks 114 and 115. Reference numeral 111 denotes a bracket for connecting the elevating rods 112 and 113.
[0047]
The application head 66 is supported so as to be movable in the horizontal direction with respect to the head holder 53. For this purpose, a support portion 71 is formed on the head holder 53, and a guide groove 72 for guiding the application head 66 is formed on the lower surface of the support portion 71. The application head 66 is formed of a ferromagnetic material, and a plate-like permanent magnet 73 is attached to the guide groove 72, and the application head 66 is attracted by the permanent magnet 73 with a predetermined attraction force. The suction force is set so that the application head 66 does not fall and can move in the horizontal direction with a slight force.
[0048]
The application head 66 holds the cap C until the cap C taken out from the pocket 36 is pasted to the set pasting position. For this purpose, a plurality of suction ports 76 are formed in the lower surface of the application head 66, and a suction port 76 and a negative pressure generation source (not shown) are connected to the manifold 77 and the first pressure source formed in the application head 66. The negative pressure pipe 78, the second negative pressure pipe 79 formed in the support portion 71, and an on-off valve (not shown) are connected.
Therefore, by opening and closing the on-off valve by a control device (not shown), it is possible to selectively apply a negative pressure to the suction port 76 and hold or release the cap C. It should be noted that when the application head 66 is moved with respect to the head holder 53, an application is provided at the lower end of the second negative pressure tube 79 so that the first and second negative pressure tubes 78 and 79 are not blocked. A long groove portion 81 extending in the longitudinal direction of the head 66 is formed.
[0049]
By the way, in the link mechanism 59, in order to move the head holder 53 in the vertical direction and the horizontal direction, the first and second links 83 and 84 are disposed so as to be swingable around a shaft (not shown).
[0050]
The first link 83 includes a first arm 83a and a second arm 83b that is longer than the first arm 83a. A cam follower 85 projects from the tip of the first arm 83a. And a cam (not shown) are engaged, and the tip of the second arm 83 b and the linear guide 54 are slidably connected via a rod 87. The second link 84 includes a first arm 84a and a second arm 84b that is longer than the first arm 84a. A cam follower 86 projects from the tip of the first arm 84a. The cam follower 86 and the cam are engaged with each other, and a protrusion 99 is formed at the tip of the second arm 84 b so as to extend vertically to the protrusion 99 and the head holder 53. The long groove 88 is engaged. The angle formed by the first arm 84a and the second arm 84b is larger than the angle formed by the first arm 83a and the second arm 83b.
[0051]
The cam is formed with first and second cam grooves (not shown) for guiding the cam followers 85 and 86. When the cam is operated, for example, rotated by driving a cam drive source (not shown). As the cam rotates, the cam followers 85 and 86 are guided by the first and second cam grooves, and the first and second links 83 and 84 are swung. As a result, the application head 66 is moved while drawing a predetermined locus LC, and during that time, the application head 66 takes out the cap C from the index table 18, conveys it, and sticks it to the set sticking position. The locus LC is drawn by a point a set at the center of the lower surface of the application head 66.
[0052]
By the way, the packaging container body P _M Are not always in the same shape, the packaging container body P is placed at a predetermined packaging container holding position on the conveyor 61. _M The packaging container body P _M The setting sticking position will vary. And since the cap sticking part 20 is being fixed to the frame, if the position where the application head 66 presses the cap C against the top wall 21 is always constant, the actual sticking position will vary, and the packaging container Body P _M Depending on the case, the cap C cannot be correctly attached to the set attaching position.
[0053]
Therefore, as described above, the head positioning device 56 for moving the application head 66 relative to the head holder 53 and placing it at the reference position, and the adjusting device 57 for placing it at the adjustment position are provided. The head positioning device 56 includes a bracket 91 fixed to the frame, an adjustment rod 92 projecting from the bracket 91, and a reset as a stopper rotatably disposed at the tip of the adjustment rod 92. A roller 93 is provided. The adjustment device 57 includes a linear stepping motor 101 as an actuator that is driven in response to an adjustment signal from the control device, and a position adjustment pin 102 that is advanced and retracted by driving the linear stepping motor 101.
[0054]
The setting sticking position detection means (not shown) of the control device calculates the coordinates of the tab 23 based on the image of the top wall 21 photographed by the camera 22 and detects the setting sticking position based on the coordinates. A position adjustment control unit (not shown) of the control device calculates the protrusion amount of the position adjustment pin 102, generates an adjustment signal corresponding to the protrusion amount, and sends the adjustment signal to the linear stepping motor 101. Accordingly, the application head 66 is moved relative to the head holder 53 by an amount corresponding to the protruding amount of the position adjusting pin 102.
[0055]
In the present embodiment, since the tab 23 is attached to the top wall 21 in advance, the setting attachment position can be detected based on the coordinates of the tab 23. And the packaging container main body P in which the tab 23 is not stuck _M In, the mark is previously given to the set sticking position of the top wall 21, and the set sticking position detecting means calculates the coordinates of the mark and detects the set sticking position based on the coordinates.
[0056]
Next, operation | movement of the said cap sticking part 20 is demonstrated.
[0057]
First, when the cam is rotated by driving the cam drive source and the head holder 53 is placed at the initial position, the front end (the right end in FIG. 1) of the application head 66 and the reset roller 93 are brought into contact with each other. The head 66 is placed at a position a1 that is a reference position. Subsequently, when the head holder 53 is moved backward (moved to the left in FIG. 1) and the application head 66 is placed at the position a2, the rear end (left end in FIG. 1) of the application head 66 and the front end of the position adjusting pin 102 are placed. Are brought into contact with each other. At this time, when the position adjusting pin 102 is placed at a preset position by driving the linear stepping motor 101, the application head 66 is pushed by the position adjusting pin 102 and moved relative to the head holder 53. The position is adjusted.
[0058]
Next, when the head holder 53 is moved downward and the application head 66 is placed at the position a3, the application head 66 and the cap C on the index table 18 are brought close to each other. At this time, suction control means (not shown) of the control device applies a negative pressure to the suction port 76 by opening the on-off valve, and sucks the cap C by the application head 66. Subsequently, when the head holder 53 is moved forward (moved to the right in FIG. 1) and the application head 66 is placed at the position a4, the cap C is transported forward (to the right in FIG. 1). 36.
[0059]
Next, when the head holder 53 is moved downward and the application head 66 is placed at the position a5, the cap C is pressed and stuck to the set sticking position by the application head 66.
[0060]
Then, after the head holder 53 is advanced and the application head 66 is placed at the position a6, the head holder 53 is advanced obliquely upward. The application head 66 hits the reset roller 93 and then the reset roller 93. Is rotated upward and placed at the position a1.
[0061]
Thus, the setting sticking position is detected based on the image of the top wall 21 photographed by the camera 22, and the position of the application head 66 with respect to the head holder 53 is adjusted based on the detected setting sticking position. Therefore, each packaging container body P _M Even if there is a variation in the set sticking position, the set sticking position and the actual sticking position can always be matched, so for various packaging container bodies, the cap is correctly stuck to the set sticking position. be able to.
[0062]
In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.
[0063]
【The invention's effect】
As explained in detail above, according to the present invention, in the spout member mounting device, the conveying means for conveying the packaging container main body, and the set sticking position set on the packaging container main body conveyed by the conveying means An attachment head for attaching the spout member to the head, a head holding means for holding the attachment head, a position adjusting means for adjusting the position of the attachment head relative to the head holding means, and a setting sticking position detection An adjustment amount of the position of the mounting head by the position adjustment means is calculated based on the set sticking position detected by the means, an adjustment signal corresponding to the adjustment amount is generated, and the adjustment signal is And a controller that drives the actuator of the position adjusting unit to move the mounting head relative to the head holding unit.
[0064]
In this case, the mounting head is held by the head holding means, and the position of the mounting head relative to the head holding means is adjusted by the position adjusting means. Therefore, even if variations occur in the setting sticking position of each packaging container body, the setting sticking position and the actual sticking position can always be matched by adjusting the position of the mounting head. About a packaging container main body, a spout member can be correctly stuck on a setting sticking position.
[Brief description of the drawings]
FIG. 1 is a diagram showing an operation of a cap sticking unit in an embodiment of the present invention.
FIG. 2 is a first perspective view of a cap attachment device according to an embodiment of the present invention.
FIG. 3 is a second perspective view of the cap attachment device according to the embodiment of the present invention.
FIG. 4 is a perspective view of a main part of a cap attaching part in the embodiment of the present invention.
FIG. 5 is a first diagram showing a holding state of the application head by the head holder in the embodiment of the present invention.
FIG. 6 is a second diagram showing a holding state of the application head by the head holder in the embodiment of the present invention.
[Explanation of symbols]
15 Base conveyor
53 Head holder
56 Head positioning device
57 Adjusting device
66 Application Head
a1 position
C cap
P _M Packaging container body

Claims (2)

(A) conveying means for conveying the packaging container body;
(B) an attachment head for adhering the spout member at a setting adhering position set on the packaging container main body conveyed by the conveying means;
(C) head holding means for holding the mounting head;
(D) position adjusting means for adjusting the position of the mounting head relative to the head holding means;
(E) Based on the set sticking position detected by the set sticking position detecting means, an adjustment amount of the position of the mounting head by the position adjusting means is calculated, and an adjustment signal corresponding to the adjustment amount is generated A spout member attachment, comprising: a control device that sends the adjustment signal to the position adjustment means, drives an actuator of the position adjustment means, and moves the attachment head relative to the head holding means. apparatus. (A) having reset means for placing the mounting head in a reference position;
(B) The spout member mounting device according to claim 1, wherein the position adjusting means moves a mounting head placed at the reference position .

Images