JP6516288B2 - In-mold molding system and in-mold molding method - Google Patents

Description

The present invention relates to an in-mold molding system and an in-mold molding method in which a label cut from a label sheet is set in a mold of a resin molding machine and then an in-mold molded product integrally molded with the label is taken out and carried out.

For example, a molding system shown in Patent Document 1 is known as a molding system for an in-mold label molding, in which a label having a design etc. printed on the surface of a resin molding is integrally molded. The molding system comprises a label feeding device for feeding a label into a mold of an in-mold molding machine, and a label conveying device for removing a label stacked and accommodated in a label magazine from the bottom and feeding it to the label feeding device. The label separated from the lower part of the label magazine by the label transfer device is delivered to the label supply device and mounted in the mold of the in-mold molding machine to enable in-mold molding.

However, in the above-described forming system, it is necessary to cut a label sheet on which a large number of label patterns have been printed along the outer shape of the label pattern to accumulate a large number of labels in a label magazine. The label cutting from and the in-mold molding had to be performed separately, and the working efficiency of in-mold molding was poor.

In addition, since a large number of labels cut from the label sheet are stacked and accumulated in the label magazine, there is a high possibility that foreign substances such as dust adhere to the labels when the labels are accumulated in the label magazine. There is a risk of molding failure.

Patent Document 2 discloses an in-mold molding system for forming an in-mold label molded article by winding and adsorbing a previously cut label around a pseudo core and then moving and mounting the pseudo core into a mold. It is done.

In the in-mold molding system, it is necessary to cut and accumulate a large number of labels from the label sheet in advance as in Patent Document 1, and foreign matter such as dust adheres to the labels at the time of cutting and accumulation. There is a possibility that molding label moldings may become molding defects.

In addition, when winding the label around the pseudo core and holding it by suction, it is difficult to accurately hold the label on the pseudo core. As a result, even when the pseudo core holding the label by suction is inserted into the mold and mounted, it is difficult to mount the label accurately in the mold and the label on the surface of the molded article Have the problem of being integrated in a misaligned state.

In any in-mold molding system, the working time of in-mold molding including the cutting of the label is long, and there is a problem that the in-mold label molded product can not be formed efficiently in a short cycle.

JP, 2009-96014, A JP, 2009-96018, A

The problem to be solved is that a large number of labels need to be cut in advance from the label sheet and accumulated in a label magazine etc. At that time, dust etc. adhere to the labels and the in-mold label molded product is defective There is a risk of becoming

In addition, the process of cutting the label from the label sheet, the process of setting the label in the mold, the process of molding the in-mold label molded article, the process of taking out the in-mold label molded article from the in-mold molding machine, etc. The in-mold molding efficiency is poor and the molding time is long.

In the in-mold molding system according to claim 1 of the present invention, the label is cut and formed by the laser light output from the laser light cutting means along the outer shape of the label pattern printed on the label sheet drawn out from the raw sheet The label forming means, the label holding means for holding the label, and the molded article holding means for holding the in-molded in-mold label molded product, the label forming means and the in-mold injection molding means (in the following An injection molding means is referred to as "in-mold molding means". A mounting and taking-out means is moved between the molds of the in-mold molding means. A transfer means for transferring so that the side faces upward, and when the loading / unloading means is moved to the in-mold forming means side, Hold the holding means and the molded article holding means into the space between the molds, perform the operation of attaching the label to the mold and the action of releasing the in-mold label molded article from the mold and performing the label forming operation by the label forming means When the loading / unloading means is moved to the label forming means, the in-mold injection molding means performs the molding operation and the transfer means transfers the in-mold label molded product delivered from the molded article holding means to the unloading means The most important feature is to carry out the following operations.

According to a thirteenth aspect of the present invention, there is provided an in-mold molding method comprising the steps of: 1) placing one of the labels held by the label holding means which has entered between the molds when the loading / unloading means is moved to the in-mold molding side; A label pattern printed on a label sheet fed out from a sheet original by a label forming means in parallel with the operation of being mounted inside and releasing the in-mold label molded article from the other mold by the molded article holding means The laser light is scanned along the outer shape of the label to cut and form the label. 2 When the loading / unloading unit is moved to the label forming unit side, the synthetic resin is placed between the dies mounted with the label by the in-mold An in-mold label held by a label holding means and held by a molded article holding means in parallel with a molding operation of injecting and molding an in-mold label molded article Passed to the transfer means in the form product, 3
The main feature is that the in-mold label molded product transferred by the transfer means is transferred onto the unloading means so that the label surface is directed upward, and the main feature of the invention is from 1 to 3.

According to the present invention, the in-mold molding time can be shortened and the efficiency can be improved by linking the step of setting and molding the label cut from the label sheet as it is into the mold of the in-mold molding machine as it is. It is possible to suppress the adhesion of pride and the like to the label and reduce the defect rate of the in-mold label molded product.

It is an explanatory view showing an outline of an in-mold molding system. It is an explanatory view showing a label formation means. It is explanatory drawing which shows the mounting / extracting means of an in-mold label molded product. It is explanatory drawing which shows a transfer means. It is an explanatory view showing a set state of a label sheet to a perpendicular support plate. It is partial cross-sectional explanatory drawing which shows the movement state of the label holding means and 1st molded article holding means with respect to an in-mold shaping means. It is partial cross-sectional explanatory drawing which shows the mounting state of the label with respect to the inside of a movable mold, and the holding state of an in-mold label molded article. It is cross-sectional explanatory drawing which shows the state which mounts | wears with a label and takes out an in-mold label molded product from fixed mold. It is cross-sectional explanatory drawing which shows the state which delivers an in-mold label molded article from a 1st molded article holding means to a 2nd molded article holding means. It is explanatory drawing which shows the state which made the 2nd molded article holding means relative to a 3rd molded article holding member. It is explanatory drawing which shows the state which suction-held the in-mold label molded article by the 3rd molded article holding member. It is explanatory drawing which shows the state which transferred and mounted the in-mold label molded article adsorbed-held by the 3rd molded article holding member to a carrying out means. It is perspective explanatory drawing which shows the example of an up-down direction width adjustment mechanism of the label holding member in a label holding means. It is perspective explanatory drawing which shows the horizontal direction width adjustment mechanism example of the label holding member in a label holding means.

When the loading / unloading means is moved to the in-mold molding side, the label holding means and the molded article holding means enter into the space between the molds, and the mounting operation of the label on the mold And the label forming unit performs the label forming operation, and when the loading / unloading unit moves toward the label forming unit, the in-mold molding unit performs the forming operation and the transfer unit It is the best embodiment to execute the operation of transferring the delivered in-mold label molded product to the unloading means.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 4, the in-mold molding system 1 according to the present invention comprises a label forming unit 3, an in-mold molding unit 5, a loading and unloading unit 7 and a transfer unit 9.
The label pattern (not shown) of the label sheet 11 drawn out from the original sheet 13 of the label sheet 11 which is printed from a large number of label patterns printed at predetermined intervals in the width direction and width orthogonal direction. ) From the step of forming the label 15 by cutting along the outer shape, and the in-mold label molded product 17 in-mold formed is carried out as an unloading means as an unloading means in a state in which the label 15 is directed upward. 19 A series of processes are performed up to the step of transferring and unloading on the upper side.

The label forming means 3 is a label sheet 1 fed from a sheet raw fabric 13
1. A label 15 is cut and formed by a laser beam scanned along the outer shape of the label pattern 11a printed on 1. A vertical support plate 23 and a vertical guide plate 25 are formed on the body frame (not shown) of the label 15a. The vertical support plate 23 and the vertical guide plate 25 are drawn out from the wound sheet material 13 and are provided with labels along the way to the take-up reel 29. The sheet 11 is supported and guided vertically.

In the vertical guide plate 25, a plurality of through holes 25a having a size larger than the outer shape of the label pattern printed on the label sheet 11 described later is arranged in the row direction (label sheet 1 described later
It is provided at predetermined intervals in the direction perpendicular to the transfer direction of 1) and in the row direction (direction coincident with the transfer direction of the label sheet 11). In the present embodiment, four columns 2
Although a total of eight through holes 25a in a row are provided, the present invention is not limited to this.

Further, in the vertical support plate 23, a plurality of suction holes (not shown) are provided corresponding to the respective through holes 25a, and each suction hole is a negative pressure generating means (all shown in the drawings) via an electromagnetic on-off valve. Connected to the When the label sheet 11 is transferred to the front side, the vertical support plate 23 sucks the label symbol portion of the label sheet 11 under negative pressure to restrict positional deviation, and the label symbol is formed by the laser beam cutting means 31 described later. When the label 15 is formed by cutting along the outer shape, the label 15 is held by negative pressure adsorption.

The label sheet 11 wound on the sheet stock 13 is a label so that a large number of label patterns corresponding to the label 15 integrated with the resin molded product at the time of in-mold molding correspond to the respective through holes 25a described above. The label sheet 11 printed at a predetermined interval in the transport direction and transport orthogonal direction of the sheet 11 and fed out from the raw sheet 13 passes through the diverting roll, tension roll, etc., and the vertical support plate 23 and the vertical guide plate It is arranged to pass vertically between 25.

Further, a label sheet (hereinafter referred to as a scrap sheet 11b) in which the label 15 is formed by the laser beam output from the laser beam cutting means 31 and the label image portion is extracted passes through the diverting roll, the tension roll, etc. Then, it is taken up by the take-up reel 29. When winding up the scrap sheet 11 a by the take-up reel 29, the take-up force is such that the label sheet 11 located between the vertical support plate 23 and the vertical guide plate 25 is planarly developed with constant tension. It is torque controlled.

Laser light cutting means 31 is provided on the main body frame facing the vertical guide plate 25.
The laser beam cutting means 31 includes a vertical support plate 23 and a vertical guide plate 2.
Each label pattern of the label sheet 11 positioned between 5 is melted and cut by the heat of the laser beam which is scanned along the outline through the corresponding through holes 25a (a plurality of sheets (in this example) , 8 labels) are formed.

As a scanning mechanism of the laser beam cutting means 31 for outputting the laser beam so as to scan the laser beam along the outer shape of the label pattern, a plurality of laser beam output heads connected to be able to guide the laser beam to the laser beam oscillation device A mechanism that scans the laser light by controlling movement in a two-dimensional direction (vertical and horizontal directions) and places a galvano scanner (not shown) on the light path of the laser light output from the laser light oscillation device Alternatively, any mechanism may be used, such as a mechanism for scanning along the outer shape of the label pattern while reflecting the laser light as the galvano mirror rotates.

The in-mold molding means 5 is a conventionally known injection molding apparatus, and is axially arranged on a fixed side platen 35 to which the fixed mold 33 is attached and a tie bar 39 which is laid across the movable side platen 37. The movable side mounting plate 43 supported so as to slide in the direction and to which the movable mold 41 is attached relative to the fixed mold 33, and the movable side mounting plate 43 toward the fixed side platen 35 side
And a mold clamping member 45 for clamping the movable mold 41, and a fixed mold 33 clamped.
And an injection unit 4 for injecting the molten synthetic resin into the molding space of the movable mold 41
It is composed of 7 mag. Since the in-mold molding means 5 is conventionally known, the detailed description will be omitted.

The mounting and taking-out means 7 mounts the label 15 cut and formed by the label forming means 5 into the cavity of the movable mold 41 and at the same time takes out the in-mold label molded product in-molded from the movable mold 41. The body frame (not shown) is viewed from the operation side (the operation panel side of the in-mold molding means 5) or the opposite operation side (the side opposite to the operation panel of the in-mold molding means 5) A first frame 49 is provided which extends in a direction perpendicular to the central axis of the in-mold forming means 5 and extends to the outside of the label forming means 5.

The first movable body 51 is supported by the first frame 49 so as to be movable in the longitudinal direction, and is reciprocated in the longitudinal direction by the first moving means 53 connected to the first movable body 51. The first moving means 53 has an axis in the longitudinal direction, and the shaft end is rotatably supported by the first frame 49 and numerically controllable electric motor such as a servomotor at one shaft end. The motor 53 a is connected, and is constituted by a feed screw 53 b and the like engaged with a nut (not shown) provided to the first movable body 51.

The first moving means 53 is not limited to the feed screw mechanism described above. For example, the first moving means 53 is rotatably supported at both ends in the longitudinal direction of the first frame 49 and an electric motor 53a is connected to one of them. A belt moving mechanism in which a belt (timing belt) partially fixed to the first movable body 51 is bridged to a pair of rotating bodies, and a rack gear is fixed in the longitudinal direction of the first frame 49 In addition, any of a rack and pinion moving mechanism provided with an electric motor 53a in which a pinion gear that meshes with a rack gear is provided on an output shaft, or a linear motor may be used.

The first movable body 51 is provided with a support plate 55 extending in a direction orthogonal to the longitudinal direction of the first frame 49, and the support plate 55 is provided with second and third movable bodies 57 and 5.
9 are individually movably supported in the longitudinal orthogonal direction. The second and third movable bodies 57 and 59 reciprocate in the longitudinal direction of the support plate 55 by second and third moving means (not shown) of the same mechanism as the first moving means 53 described above. Be moved.

In addition, as an actual movement mode of the second and third movable bodies 57, 59, in the case of using the second and third moving means as a feed screw mechanism, in order to move in synchronization with each other in the direction of getting away and approaching each other. For example, one feed screw formed in such a way that the drilling direction of the screw is on the opposite side at the axially middle portion, and one electric motor for rotationally driving the feed screw in forward and reverse directions Both may be configured from (not shown), and the second and third movable bodies 57, 59 may be moved in the direction away from and the direction away from each other according to the drive of the electric motor. At that time, the second and third movable bodies 57, 5
When the movement distance of 9 is made different, the thread pitch of the feed screw may be made different.

The second movable body 57 is provided with label holding means 65. The label holding means 65 is a plurality of labels (eight in the upper and lower two stages in this example) on the relative surface of the vertical guide plate 25 in the mounting plate 65a extending vertically to the in-mold molding means 5 side It has a structure provided with the holding member 65b.

The distance between the label holding members 65b in the label holding means is set to coincide with the distance between the through holes 25a in the vertical guide plate 25 and the distance between the cavities in the movable mold 41. Each label holding member 65b
The spacings between the holes are arranged to correspond to the spacings between the holes 25a in the vertical guide plate 25 and the spacings between the cavities in the movable mold 41. The case where the distance between the label holding members 65b and the distance between the cavities in the movable mold 41 do not match will be described later.

Further, the third movable body 59 is provided with a first molded product holding means 67. Said first
The molded product holding means 67 is provided with a plurality of (in this example, eight upper and lower two stages, first molded product holding members) 67b on the mounting plate 67a extending vertically to the in-mold molding means 5 side. It consists of

In addition, the mutual interval of each 1st molded article holding member 67b in the 1st molded article holding means 67 is arrange | positioned so as to correspond with the mutual space of each core in the fixed metal mold | die 33. As shown in FIG.

A negative pressure generating means (not shown) is connected to each of the label holding member 65b and the first molded product holding member 67b via an electromagnetic valve, and the label 15 is formed by the label holding member 65b. The label surface side of the in-mold label molded product 17 in-mold molded by the holding member 67c is held by suction.

The transfer means 9 transfers the in-mold label molded product 17 taken out of the in-mold forming means 5 by the mounting and taking-out means 7 onto the delivery conveyor 19 by controlling its posture such that the label side faces upward. And the body frame (not shown) extends in a direction coincident with the central axis of the in-mold molding means 5.
A frame 75 is provided, and the fourth movable body 77 is movably supported by the second frame 75 in the longitudinal direction.

The fourth movable body 77 is the first molded product holding unit 67 side and the first molded product holding unit 6 by the fourth moving unit (not shown) similar to the first to third moving units 53 described above.
9
Reciprocate between the positions away from.

An elevating frame 81 is supported by the fourth movable body 77 so as to be movable in the vertical direction, and the elevating frame 81 is described later by a fifth moving means (not shown) similar to the first to fourth moving means 53. Second molded product holding unit 85 is a first molded product holding unit 6
The in-mold label molded product 17 held at 7 is raised and lowered between the lower position opposite to the label surface of the in-mold label molded product 17 and the upper position according to the height of the transport surface of the discharge conveyor 19.

Second molded product holding means 85 is provided at the lower part of the elevating frame 81 via a first reverse posture control member 87, and the second molded product holding means 85 is a first reverse posture control member 87 to perform the first process. It is pivoted between a vertical position opposite to the in-mold label molding 17 held by the molding holding means 67 and a horizontal position in which the label surface side of the in-mold label molding 17 faces downward.

The second molded product holding member 85b is provided with a plurality of second molded product holding means 85 (eight in the upper and lower two stages in this example) on the mounting plate 85a extending vertically to the in-mold molding means 5 side. In the in-mold label held by the first molded product holding unit 67, each second molded product holding member 85b is connected by negative pressure generating unit (not shown) via an electromagnetic valve. The molded article 17 is held by suction on the label side and delivered.

Further, the first reverse posture control member 87 is a label surface of the in-mold label molded article 17 suction-held to the second molded article holding means 85 by the link mechanism or the electric motor connected to the air cylinder. Turn it so that the side is facing downward.

A second reversing posture control member 89 is provided on the main body frame corresponding to the loading side of the unloading conveyor 19. The second reversing posture control member 89 is a mounting plate 8 provided on an arm 89c swinging about a pivot shaft 89b to which the electric motor 89a is connected.
The third molded product holding member 89 b is provided on the second molded product holding member 85 b of the second molded product holding means 85 at 9 d.

The second reverse position control member 89 holds the side opposite to the label surface of the in-mold label molded product 17 held by the horizontally rotated second molded product holding means 85 and then pivots toward the unloading conveyor 19 side. The in-mold label molded product 17 is transferred onto the unloading conveyor 19 with its posture being controlled so that the label side faces upward.

In addition, above the unloading side of the unloading conveyor 19, the label side of the conveyed in-mold label molded product 17 is imaged, and inspection means (in which it is determined whether the label 15 is in-mold molded in a normal state) A stacker (not shown) for stacking a large number of in-mold label moldings 17 in a multistage manner is arranged downstream of the transport direction, in which the stacker is placed.

Next, the operation and molding method of the in-mold molding system configured as described above will be described. For convenience of explanation, the operation and method at the start of in-mold molding start will be omitted, and the operation and method during continuous operation will be described.
The label sheet 11 is fed from the sheet stock 13 and passes through the gap between the vertical support plate 23 and the vertical guide plate 25 after passing through the diverting roll, the tension roll, etc., and then passes through the diverting roll, the tension roll, etc. Negative pressure by each suction hole of the vertical support plate 23 in a state where the label pattern 11a of the label sheet 11 wound between the vertical support plate 23 and the vertical guide plate 25 is aligned with the through hole 25a of the vertical guide plate 25 It is set to be held in position by suction. (See Figure 5)

In the above state, when the molding completion signal is outputted from the in-mold molding means 3 and the movable mold 41 is opened by the fixed mold 33, the first moving means 53 is driven to drive the first movable body 51. To the in-mold molding means 5 side to hold the label holding means 65
And the first molded product holding means 67 is moved between the fixed mold 33 and the movable mold 41 opened to make each label holding member 65b into each cavity of the movable mold 41, and each first molded product holding member 67b Are respectively made to face the label surface side of the in-mold label molded product 17 held by the core of the fixed mold 33. (See Figure 6)

Further, the label holding means 65 and the first molded product holding means 67 are moved from the front surface of the vertical guide plate 25 so that the vertical guide plate 25 and the laser beam cutting means 3 can be used.
Between 1 is formed a space through which the laser light can pass.

The label holding means 65 and the first molded product holding means 67 are in-mold molding means 5
The outer shape of the label pattern on the label sheet 11 adsorbed by the vertical support plate 23 by driving the laser beam cutting means 31 at the timing of moving to the side and driving the laser beam cutting means 31 to pass through the through holes 25a of the vertical guide plate 25 The label 15 is cut and formed by scanning and heat melting along.

The labels 15 separated from the label sheet 11 by cutting are sucked by negative pressure and held by the respective suction holes of the vertical support plate 23.

Further, in parallel with the above-described operation of forming the label 15 by the laser beam, the second moving means is driven to move the second movable body 57 to the movable mold 41 side to enter the label holding member 65b into the cavity. After the label 15 is mounted in the movable mold 41, the suction holding of the label 15 by the label holding member 65b is released and the third moving means is driven to move the third movable body 59 to the fixed mold 33 side. The in-mold label molded product 17 held on the core of the fixed mold 33 by the first molded product holding member 67b is adsorbed and held on the label surface side. (See Figure 7)

When the label 15 is mounted in the cavity of the movable mold 41, the label 15 is adsorbed under negative pressure through a negative pressure passage previously formed on the movable mold 41, or the in-mold molding means from the label forming means 3 A charging means (not shown) may be disposed on the way to 5 and the label 15 passing through may be charged so that the label 15 is electrostatically attracted within the cavity of the movable mold 41.

After the above operation, the second moving means is moved back to return the second movable body 57 to the original position and the label holding member 65b is pulled out of the cavity of the movable mold 41 and the third moving means is moved backward to The in-mold label molded product 17 adsorbed and held by the first molded product holding member 67 b by returning the movable body 59 to the original position is fixed to the mold 33.
Release from. (See Figure 8)

After the above operation, the first moving means 53 is moved back to return the first movable body 51 to the label forming means 3 side, and then the second moving means is driven to move the label holding means 65 to the vertical guide plate 25 side. The label holding members 65b are advanced into the through holes 25a, and the labels 15 held by suction are held by suction on the vertical support plate 23, and the third moving means is driven to move the first molded article holding means 67 to the delivery position. The first molded product holding member 67 is moved to the second molded product holding unit 85 side of the transfer unit 9 described later, which is moving standby.
The second molded product holding member 85b sucks and holds the in-mold label molded product 17 whose label surface side is held by suction by b. (See Figure 9)

When the first movable body 51 is returned to the label forming means 3 side, the fixed mold 33 is used.
After the movable mold 41 to which the label 15 is attached is clamped, the synthetic resin melted from the injection unit 47 is injected into the molding space of the fixed mold 33 and the movable mold 41 to mold the in-mold label molded article 17 Molding.

Also, when the labels 15 held by the vertical support plate 23 are adsorbed by the label holding member 65b after the first movable body 51 is returned to the label forming means 3 side, the first molded product holding member 67b is adsorbed and held. When the second molded product holding member 85b sucks and holds the second molded product holding member 85b, the suction by the vertical support plate 23 and the suction by the first molded product holding members 67b are broken under negative pressure to release the holding. .

After the above operation, as described above, the first moving means 53 is driven to move the first movable body 51 to the in-mold forming means 5 side to fix the label holding means 65 and the first molded article holding means 67 by mold opening The movable mold 4 is made to enter between the mold 33 and the movable mold 41
The label 15 is mounted in each cavity 1 and the in-mold label molding 17 held by the core of the fixed mold 33 is held.

When movement of the first movable body 51 to the in-mold and forming means 5 side is started, the take-up reel 29 is drive-controlled to scrape the scrap sheet 11 from which the label 15 is pulled out.
By winding up the sheet b, the next two lines of label patterns on the label sheet 11 are fed to be in a standby state so as to correspond to the respective through holes 25a of the vertical guide plate 25.

On the other hand, when the first movable body 51 moves to the label forming means 3 side, the operation and method of delivering to the transfer means 9 held by the first molded article holding means 67 will be described.
At the timing when the movable body 51 moves to the label forming means 3 side, the fifth moving means is driven to lower the elevating frame 81 to make the second molded article holding means 85 stand by at the delivery position of the in-mold label molded article 17.

At this time, the transfer means 9 operates the first reverse posture control member 87 to make the second molded article holding means 85, and each second molded article holding member 85b is each first molded article of the first molded article holding means 67. The mounting plate 85a is attitude controlled in the vertical state so as to be opposed to the holding member 67b.

When the first movable body 51 moves to the label forming means 3 side in the above state, the third moving means is driven to stand by to move the third movable body 59, and the first molded article holding means 67 is formed by the second molding The in-mold label molded product 17 moved to the product holding means 85 side and held by suction by the first molded product holding member 67 b is held by suction by the second molded product holding member 85 b and delivered. At this time, the second molded product holding member 85b adsorbs and holds the in-mold label molded product 17 on the surface opposite to the label surface side.

After the above operation, the fourth moving means is driven while the fifth moving means is returned to raise the lifting frame 81 in synchronization with the timing at which the third moving means is returned and the third movable body 59 is returned to the original position. Then, the fourth movable body 77 is moved to the unloading conveyor 19 side, and the first reverse posture control member 87 is returned to move the second mold holding member 85b to suction and hold the in-mold label molding 17 The product holding means 85 is turned downward to control its posture. (See Figure 10)

As a result, the in-mold label molded product 17 suction-held by the respective second molded product holding members 85 b is subjected to the attitude control of each third molded product holding member 89 in the upward horizontal state.
Each is opposed to b.

In addition, when moving the second molded product holding means 85 to the unloading conveyor 19 side, the lifting frame 81 is lifted together with the movement of the fourth movable body 77 to shorten the moving time to the unloading conveyor 19 side. it can. In addition, the first reverse attitude control member 87 is operated during the movement of the second molded product holding means 85 with respect to the carry out conveyor 19 side, and the second molded product is moved when the second molded product hold means 85 moves to the carry out conveyor 19 side. Attitude control is performed so that the holding means 85 is directed downward.

Next, as shown in FIG. 11, the fifth moving means is driven in the above state to lower the lift frame 81, and the in-mold label molded product 17 absorbed and held by each second molded product holding member 85b is supported. And the second molded product holding member 89 b
After the suction holding is released by releasing the suction holding by the molded product holding member 85b, as shown in FIG. 12, the fifth moving means is returned to raise the elevating frame 81 and the second reversing posture control member 89 is electrically driven. Drive motor 89a to arm 89c
Is moved in the counterclockwise direction to move the in-mold label molded product 17 adsorbed and held by the third molded product holding member 89 b onto the unloading conveyor 19 and then released by adsorption and transferred. At this time, the in-mold label molded product 17 transferred onto the carry-out conveyor 19 is subjected to posture control such that the label side faces upward.

An operation of cutting and forming the label 15 from the label sheet 11 by repeating the above operation, and mounting the label 15 in the movable mold 41 to the in-mold molding means 5 and an in-mold label molded article 17 molded from the fixed mold 33 The operation of releasing the mold, the operation of molding the in-mold label molding 17 and the operation of transferring the in-mold label molding 17 to the unloading conveyor 19 are performed in parallel by the in-mold molding means 5.

In the in-mold molding system 1 of this embodiment, the label forming cycle (time) by the label forming unit 3, the molding cycle by the in-mold molding unit 5, and the transfer cycle to the delivery conveyor 19 by the transfer unit 9 are almost By matching them, the molding operation can be made efficient.

In this embodiment, the label holding means 65 and the first molded product holding means 67 of the loading and unloading means 7 are made to enter between the fixed mold 33 and the movable mold 41 of the in-mold molding means 5 and the label 15 is moved to the movable mold 41. In order to cut and form the label 15 from the label sheet 11 by the laser light output from the laser light cutting means 31 while mounting the in-mold label molded product 17 in-mold molded from the fixed mold 33 and mounting the The operating cycle of in-mold molding can be shortened, and the in-mold label molded product 17 can be efficiently molded.

Also, an in-mold label molded article 1 taken out of the in-mold molding means 5
7 can be transferred by loading the in-mold label molded product 17 by the transfer means 9 so that the label surface side is directed upward by the transfer means 9, so that the in-mold label can be transferred. It is possible to easily check the integrally molded state of the label 15 in the molded product 17.

In the above description, the label holding means 65 in which the label holding members 65b are provided in the upper and lower two stages in a fixed manner corresponding to the distance between the through holes 25a is fixed to the second movable body 57. When the distance between the through holes 25a in the guide plate 25 in the vertical direction is different from the distance between the cavities in the movable mold 41 in the vertical direction (the distance between the through holes 25a is in the vertical direction
An example is shown in which the space between the cavities in the vertical direction at 1 is narrow.
And the label holding member 65b arranged in the upper stage of the label holding means 65).
It is necessary to vary the distance between the label holding members 65b arranged in the lower row and the lower row.

In this case, as shown in FIG. 13, the upper and lower frames 101 are provided on the second movable body 57, and the first and second elevators 103 and 105 are supported on the upper and lower frames 101 so as to be able to move up and down. The first elevating body 103 is provided with a mounting arm 107 in which a label holding member 65b is disposed corresponding to each through hole 25a located above, and the second elevating body 1
Attached to each of the mounting members 05 are mounting arms 109 having label holding members 65b disposed corresponding to the respective through holes 25a located below.

The upper and lower frames 101 have axes in the vertical direction, and the screwing direction is made different from the axial center to each end, and an electric motor capable of numerical control at one of the shaft ends 111 rotatably supports a feed screw 113 connected thereto, and the first and second lifting members 103 and 10 corresponding to different screw portions are provided.
5
Engage with the nut (not shown).

Then, with the drive of the electric motor 111, the first and second elevating bodies 103, 105
The distance between the upper label holding member 65b and the lower label holding member 65b is changed by moving the members toward and away from each other, and the label 15 can be attached to each cavity having a narrow distance in the vertical direction. .

The label holding means 65 described above is configured to fixedly attach a plurality of (in this example, four steps in each step) label holding members 65b at an interval corresponding to the horizontal distance between the through holes 25a. When the horizontal distance between the through holes 25a in the vertical guide plate 25 and the horizontal distance between the cavities in the movable mold 41 are different
The case where the horizontal direction space | interval of each cavity in the movable mold 41 is narrow with respect to the horizontal direction space | interval of each through-hole 25a is shown as an example. In the above, it is necessary to change the horizontal interval of the label holding member 65b in each stage so as to match the horizontal interval of each cavity.

In this case, as shown in FIG. 14, the base end portion of each label holding member 65b is inserted into each elongated hole 65c formed extending in the horizontal direction in the mounting plate 65a of the label holding means 65. The provided sliding members 119 are respectively inserted in the horizontal direction and in a state of being locked and prevented from coming off, and for each of the sliding members 119,
The rods of an operating member 121 such as an air cylinder having an axis in the horizontal direction are respectively connected to be movable in the horizontal direction.

Then, when the horizontal interval between the labels 15 cut and formed by the label forming means 3 is large, the horizontal interval between the cavities in the movable mold 41 is as follows:
When the labels 15 are held by suction by the label holding members 65b, the actuating members 121 are operated in the direction in which the rods are contracted, and the labels holding members 65b are moved in the direction in which the horizontal spacing is increased. When mounting the label 15 in each cavity of the movable mold 41 in which the horizontal mutual spacing is narrow while matching the horizontal mutual spacing, the actuating member 121 is operated in the direction in which the rod extends. By moving the label holding member 65b in the direction in which the horizontal spacing is reduced, the label 15 can be taken out and attached.

In addition, the combination of the vertical movement mechanism and the horizontal movement mechanism of each first molded product holding member 67b shown in FIG. 13 and FIG. The vertical and horizontal intervals of the first molded product holding members 67b may be changed to correspond to each other by enlarging or reducing them in accordance with the intervals of the cavities.

DESCRIPTION OF SYMBOLS 1 in-mold molding system 3 label formation means 5 in-mold molding means 7 loading / unloading means 9 transfer means

11 label sheet 11a label pattern 11b scrap sheet 13 sheet original sheet 15 label 17 in-mold label molded product 19 delivery conveyor 23 as delivery means vertical support plate 25 vertical guide plate 25a through hole 29 take-up reel 31 laser beam cutting means 33 fixed Mold 35 Fixed side platen 37 Movable side platen 39 Tie bar 41 Movable side mold 43 Movable side mounting plate 45 Mold clamping member 47 Injection unit 49 1st frame 51 1st movable body 53 1st moving means 53a Electric motor 53b Feed screw 55 2 frame 57 second movable body 59 third movable body 65 label holding means 65a mounting plate 65b label holding member 65c long hole 67 first molded product holding means 67a mounting plate 67b first molded product holding member 75 third frame 77 fourth Movable body 81 Lifting frame 85 Second molded product holding Stage 85a mounting plate 85b first inverted posture control member 89 second molded article holding member 87 second inverted posture control member 89a electric motor 89b pivot shaft

89c Arm 89d Mounting Plate 89e Third Molded Product Holding Member 101 Upper and Lower Frame 103 First Lifting Body 105 Second Lifting Body 107 Mounting Arm 109 Mounting Arm 111 Electric Motor 113 Feed Screw 119 Sliding Body 121 Operating Member

Claims (22)

Label forming means for cutting and forming a label by a laser beam output from a laser beam cutting means along an outline of a label pattern printed on a label sheet drawn out from a sheet source;
A label holding means for holding a label and a molded article holding means for holding an in-mold molded in-mold label molded article, the loading and unloading means moving between the label forming means and the mold of the in-mold injection molding means When,
A transfer means for transferring the in-mold label molded product held by the molded product holding means to the carry-out means so that the label side faces upward;
Equipped with
When the loading / unloading means is moved to the in-mold injection molding means side, the label holding means and the molded article holding means enter the space between the molds, and the label mounting operation to the mold and the in-mold label molded article are released from the mold While performing the molding operation, the label forming unit performs the label forming operation, and when the loading / unloading unit moves toward the label forming unit, the in-mold injection molding unit performs the molding operation and the transfer unit holds the molded product An in-mold molding system for executing an operation of transferring the in-mold label molded product delivered from the means to the unloading means. In claim 1,
In the in-mold molding system, the label holding means and the molded article holding means can be inserted between the molds opened from the side surface orthogonal to the central axis of the injection cylinder in the in-mold injection molding means . In claim 1,
The mounting and dismounting means movably supports the label holding means to the side of the label forming means by a movable body movably supported between the in-mold injection molding means and the label forming means, and transfers the molded article holding means An in-mold molding system movably supported on the means side. In claim 1,
A label forming means is an in-mold molding system which forms a label by scanning a laser beam along the outline of the label pattern of the label sheet | seat supported by the support plate, and melt-cutting it. In claim 4,
An in-mold molding system in which the support plate is vertically disposed and supports the label sheet in a suspended state. In claim 4,
The laser light cutting means is an in-mold molding system capable of scanning the laser light along the outer shape of the label pattern by controlling movement of a laser light output head waveguide-connected to the laser light oscillating means in a two-dimensional direction. In claim 4,
The laser beam cutting means is an in-mold molding system capable of scanning the laser light along the outer shape of the label pattern by reflecting the laser light output from the laser light oscillating means by the galvano scanner means. In claim 1,
The transfer means is an in-mold molding system in which the in-mold label molded product delivered from the molded article holding means by the attitude control means is attitude-controlled and transferred onto the carry-out means so that the label side faces upward. In claim 1,
The label holding means arranges a plurality of label holding members in multistage corresponding to the vertical space of the cavity in the mold in which the label is mounted, and the molded product holding means arranges a plurality of molded product holding members in a multistage In-mold molding system placed in the. In claim 9,
An in-mold molding system in which the label holding members of each stage can change the distance from each other according to the vertical distance of the cavity in the mold to which the label is attached. In claim 1,
The label holding means is an in-mold molding system in which a plurality of label holding members are disposed corresponding to the horizontal space of cavities in a mold in which the labels are mounted. In claim 11,
An in-mold molding system in which the distance between the label holding members is variable according to the horizontal distance of the cavity in the mold in which the label is mounted. (1) When the loading and unloading means is moved to the in-mold injection molding means side, the label held by the label holding means which has entered between the molds is mounted in one mold and the other metal is molded by the molded article holding means In parallel with the operation of releasing the in-mold label molded product from the mold and taking out the label, the laser beam is scanned along the outer shape of the label pattern printed on the label sheet drawn out from the original sheet by the label forming means Cutting and forming,
2 parallel to the forming operation of forming the in-mold label molded product by injecting the synthetic resin between the molds to which the label is attached by the in-mold injection molding means when the mounting and taking out means is moved to the label forming means side And hold the label in the label holding means and deliver the in-mold label molded article held in the molded article holding means to the transfer means.
3 Transfer the in-mold label molded product delivered by the transfer means onto the discharge means so that the label surface is facing upwards,
The in-mold molding method which consists of said 1 thru | or 3. In claim 13,
The in-mold in-mold label molded product can be taken out while the label is attached to the mold while the mounting and taking-out means enters between the molds from the side orthogonal to the central axis of the injection cylinder in the in-mold injection molding means Molding method. In claim 13,
The label forming means is an in-mold molding method of forming a label by scanning a laser beam along a contour of a label pattern of a label sheet supported by a support plate and melting and cutting it. In claim 15,
A method of in-mold molding capable of scanning a laser beam along an outer shape of a label pattern by moving and controlling a laser beam output head waveguide-connected to a laser beam oscillating means in a two-dimensional direction. In claim 15,
The in-mold molding method which made it possible to scan a laser beam output from a laser beam oscillation means along an outline of a label pattern by a galvano scanner means. In claim 13,
The plurality of label holding members provided in the label holding means are arranged in multiple stages corresponding to the vertical distance of the cavity in the mold to which the label is attached, and the plurality of molded article holding members provided in the molded article holding means The in-mold molding method arrange | positioned in multistage corresponding to the molding aspect of the in-mold label molded product hold | maintained at the metal mold | die. In claim 18,
An in-mold molding method in which the mutual spacing of label holding members provided in a multistage manner can be varied in accordance with the vertical spacing of cavities in a mold in which the labels are mounted. In claim 13,
An in-mold molding method in which the horizontal spacing in the plurality of label holding members provided in the label holding means is arranged to correspond to the horizontal spacing of the cavities in the mold in which the labels are mounted. In claim 20,
The in-mold molding method which made it possible to change the horizontal mutual space | interval of each label holding member according to the horizontal space | interval of the cavity in the metal mold | die with which a label is mounted. In claim 21,
21. An in-mold molding method in which the distance between the label holding members in each stage is made variable by combining the matters according to claim 20.

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