KR100843431B1 - Concurrent molding/printing apparatus and production method for transfer printing molded product - Google Patents

Abstract

An object of the present invention is to provide a molding simultaneous printing apparatus and a method for manufacturing a transfer printed molded article which can effectively eliminate the possibility of molding defects and transfer defects caused by the inflow of resin into the inverted yarn side surface of the transfer printing foil.

An injection molding machine, a mold provided in the injection molding machine, a transfer printing foil having a plurality of transfer portions printed thereon, a foil dispensing mechanism for sending the transfer portion of the transfer printing foil into the mold in turn, and a transferred transfer printing foil from the mold. A molding simultaneous printing device comprising a foil conveying means having a foil winding mechanism to be taken, and injecting a resin into a mold-fastened mold and simultaneously carrying out molding and transfer printing onto the surface of the molded article, wherein the mold is movable or fixed. At least one side is provided with at least one block body for bending at least one end portion in the width direction of the transfer printing foil with respect to the dividing surface of the mold to be sandwiched between the movable mold and the fixed mold.

Simultaneous printing device, injection molding machine, cavity, fixed side plate, injection nozzle

Description

Manufacturing method of simultaneous molding apparatus and transfer-printed molded article {CONCURRENT MOLDING / PRINTING APPARATUS AND PRODUCTION METHOD FOR TRANSFER PRINTING MOLDED PRODUCT}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a molding simultaneous printing apparatus and a method of manufacturing a transfer printed molded article that simultaneously perform molding and transfer printing on the surface of a molded article, and particularly, to a transfer printed molded article in which transfer printing is performed on both sides of a molded article. The present invention relates to a simultaneous printing apparatus for molding and a method for producing a transfer printed molded article.

Background Art Conventionally, as shown in Fig. 4, a molding simultaneous printing apparatus which transfer-prints both surfaces of a molded article simultaneously with molding is known (for example, Patent Document 1). In Fig. 4, 100 represents a mold. The metal mold | die 100 is attached to the injection molding machine (not shown), and is comprised from the stationary die 101 and the movable die 102. As shown in FIG. In the stationary die 101 and the movable die 102, cavities 103 and 104 for forming a product part are formed. In the stationary die 101, a contact portion 105 and a runner 106 are provided in contact with the tip of the injection nozzle of the molding machine. 107 shows a foil conveying means for a foil for transfer printing, which will be described later. The foil conveying means 107 has a supply reel 108 provided above the molding machine and a winding reel 109 provided below the molding machine 2. In FIG. 4, the foil conveying means 107 is arrange | positioned at the movable die 102 side. The transfer printing foil 111 withdrawn from the supply reel 108 by the rotation of the pair of take-out rollers 110 passes between the stationary die 101 and the movable die 102, and has a pair of receiving rollers ( The winding of the winding reel 109 is performed by rotation of 112. In the apparatus of FIG. 4, the foil feeding mechanism 113 is constituted by the supply reel 108 and the pair of take-out rollers 110, and the foil is provided by the winding reel 109 and the pair of receiving rollers 112. The winding mechanism 114 is comprised.

The transfer part 115 is provided on one surface 120 of the foil for transfer printing 111. A plurality of transfer parts 115 are arranged in the longitudinal direction of the transfer printing foil 111 at predetermined intervals. The foil for transfer printing 111 is conveyed downward from the upper side of the molding machine as shown in FIG.

In the foil conveying means 107, the foil conveyance mechanism 113 and the foil winding mechanism 114 are driven simultaneously, and the transfer printing foil 111 is sent out a fixed amount, and the transfer portion 105 of the foil for transfer printing 111 is transferred. ) Is adapted to be positioned in the cavity 104 of the movable die 102. Moreover, alignment of the transfer part 105 to the cavity 104 is performed more correctly by image processing etc. by a CCD camera, for example.

In addition, in the simultaneous molding apparatus as described above, the foil conveying means 116 having a structure substantially the same as the foil conveying means 107 is provided on the stationary die 101 side. Then, the transfer portion 118 on the one surface 121 of the transfer printing foil 117 is precisely aligned with the cavity 103 of the movable die 101 by the drive of the foil transfer means 116.

In such a simultaneous molding apparatus, the foil conveying means 107 and the foil conveying means 116 are driven to position the transfer portions 115 and 118 to the cavities 103 and 104. In this state, the movable die 102 moves in the direction of the arrow in FIG. Further, the resin is filled in the spaces formed in the cavities 103 and 104 from the injection molding machine, and the molded article 119 is molded. At the same time, the designs of the transfer sections 115 and 118 are transferred to both surfaces of the molded article 119 by the row of the molded article 119 side immediately after molding.

However, in the simultaneous molding apparatus as described above, when the mold 100 is mold fastened, both end portions in the width direction of each transfer printing foil 111 and 117 are divided surfaces 124 (parting surface) of the mold 100. ), The injected resin may flow from the end portions in the width direction of the transfer printing foils 111 and 117 to the inverted yarn side surfaces 122 and 123. If the inflow of such a resin occurs, there is a fear of causing poor molding and poor transfer.

Patent Document 1: Japanese Patent Laid-Open No. 2004-074476

Therefore, the subject of this invention is focusing on the problem with the apparatus as mentioned above, and simultaneously shaping | molding which can reliably eliminate the possibility of the shaping | molding defect and the transfer defect which arise from the inflow of resin to the inverted sand part side surface of the transfer printing foil. It is providing the manufacturing method of a printing apparatus and a transfer printing molded article.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, the molding simultaneous printing apparatus which concerns on this invention is an injection molding machine, the metal mold | die provided with the said injection molding machine, the transfer printing foil by which the transfer part was printed in the longitudinal direction at predetermined intervals, and the said transfer It comprises a foil conveying mechanism having a foil feeding mechanism for sequentially sending the transfer portion of the printing foil into the mold, and a foil winding mechanism for winding the transferred transfer printing foil from within the mold, and injecting resin into the mold-fastened mold to form A molding simultaneous printing apparatus which simultaneously performs transfer printing onto the surface of a molded article, wherein at least one end of the width direction of the foil for transfer printing is clamped to at least one of the movable mold or the fixed mold of the mold. The mold of the mold is provided while providing a block body that is bent with respect to the movable mold or the fixed mold. A spring is provided which presses the block body in a direction side spaced apart from the stationary die or in a direction spaced apart from the movable die at the time of opening. In such a configuration, at the time of mold clamping of the mold, the block body is pushed back to the fixed mold side or the movable mold side against the pressing force of the spring, so that the end portion in the width direction of the transfer printing foil is reliably fitted. Therefore, at the time of mold clamping, the end portion in the width direction of the transfer printing foil is fitted to a surface different from the dividing surface of the mold, so that the resin flows into the inverted yarn side side of the transfer printing foil at the time of injection. Is prevented. Further, at the time of mold opening, the block body is moved by the pressing force of the spring to form a gap between the fixed mold and the movable mold, so that the end portion in the width direction of the transfer printing foil can be easily inserted into the gap.

Moreover, the said block body is comprised so that a movement is easy in the simple structure which uses the opening and closing of a metal mold | die and the pressing force of a spring, and does not need to provide special drive means, such as an air cylinder, for example. Therefore, complexity, enlargement, or cost increase of a metal mold | die and the whole apparatus can be prevented.

It is possible to form a runner in the block body.

Moreover, it is preferable that the said block body forms a part of division surface of a metal mold | die.

It is also possible to arrange | position a some foil conveyance means, for example, two foil conveyance means in the molding simultaneous printing apparatus which concerns on this invention. By arranging a plurality of foil transfer means, it is also possible to transfer print on both sides of the molded article at the same time. In addition, in such an aspect, the foil conveyance direction of foil conveyance means can be set to a different direction. For example, in the aspect which arrange | positions two foil conveying means, when the foil conveyance direction of one foil conveying means is set to the up-down direction of a molding machine, the foil conveyance direction of the other foil conveying means is the width direction of a molding machine. Can be set with

Moreover, in order to solve the said subject, the manufacturing method of the transfer printing molded article which concerns on this invention is an injection molding machine, the metal mold | die installed in the said injection molding machine, and the transfer printing foil by which the transfer part was printed in the longitudinal direction at predetermined intervals. And a foil feeding mechanism having a foil feeding mechanism for sequentially transferring the transfer portion of the transfer printing foil into the mold, and a foil winding mechanism for winding the transferred transfer printing foil from within the mold. At the time of injection molding and transfer printing to the surface of the molded product and molding at the same time to produce a transfer printed molded article, a block body is provided on at least one of the movable mold or the fixed mold of the mold, and the transfer printing foil is At least one end in the width direction is bent with respect to the dividing surface of the mold to sandwich the block body with the movable or fixed mold. At the same time, a method of pressing the block body with the spring toward the direction side away from the stationary mold or the direction side away from the movable mold at the time of mold opening of the mold.

According to the molding simultaneous printing apparatus and the method of manufacturing a transfer-printed molded article according to the present invention, the end portion in the width direction of the transfer printing foil is sandwiched on a surface different from the dividing surface of the mold by using a block body. Since the block body can be easily pressed in the desired direction by the simple configuration by the spring, it is possible to reliably prevent the inflow of the resin into the inverted yarn side surface of the transfer printing foil at the time of injection, and the inflow of the resin It is possible to effectively prevent the occurrence of molding defects and transfer defects caused by

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the molding simultaneous printing apparatus which concerns on one Embodiment of this invention.

FIG. 2 is a II-II arrow diagram of the simultaneous printing apparatus of FIG.

FIG. 3 is an enlarged cross-sectional view of the vicinity of a divided surface of a mold of the simultaneous printing apparatus of FIG.

4 is a schematic configuration diagram of a conventional molding simultaneous printing apparatus.

[Description of the code]

1: molding simultaneous printing device

2: injection molding machine

3: mold

4, 5: foil conveying means

6: fixed type

7: movable type

8, 9: cavity

10: fixed side plate

11: contact part of nozzle of molding machine

12: injection nozzle

14: injection table

15: expect

16: movable side plate

17, 26: supply reel

18, 27: reel reel

19, 28: pair of withdrawal rollers

20, 29: Transfer printing foil

21, 30: receiving roller

22, 31: foil transport mechanism

23, 32: Park winding mechanism

24, 33: one side of the foil for transfer printing

25, 34: transfer portion of the transfer printing foil

35: block

36: dividing surface of mold

37: runner

38: gate

39, 40: spring

41: gap formed between fixed type and block

42: end portion in the width direction of the transfer printing foil

43: Transfer Printed Molded Products

44: reverse side portion side of the transfer printing foil

EMBODIMENT OF THE INVENTION Below, preferable embodiment of the molding simultaneous printing apparatus of this invention is described with reference to drawings.

1 to 3 show a molding simultaneous printing apparatus according to one embodiment of the present invention. The molding simultaneous printing apparatus 1 has an injection molding machine 2, a mold 3 provided in the molding machine 2, and foil transfer means 4, 5.

The metal mold | die 3 is comprised from the stationary die 6 and the movable die 7 divided by the division surface 36 mentioned later. In the stationary die 6 and the movable die 7, the cavities 8 and 9 are formed to mold the product. The stationary die 6 is fixed to the stationary side plate 10 of the molding machine 2. In the stationary die 6, a contact portion 11 to which the distal end of the injection nozzle 12 of the molding machine 2 is connected is provided. The injection nozzle 12 is comprised so that the injection stand 14 and the base 15 of the molding machine 2 can be moved to the arrow direction of FIG.

The movable die 7 is fixed to the movable side plate 16 of the molding machine 2, and moves together with the movable side plate 16 in the direction of the arrow in FIG. 1, thereby mold clamping and mold opening of the mold 3. This is to be done.

The molding simultaneous printing apparatus 1 which concerns on this embodiment has two foil conveyance means 4 and 5. The foil conveying means 4 has a supply reel 17 provided above the molding machine 2, and a winding reel 18 provided below the molding machine 2. In FIG. 1, the foil conveying means 4 is arrange | positioned at the movable die 7 side. The transfer printing foil 20 withdrawn from the supply reel 17 by the pair of take-out rollers 19 passes between the stationary die 6 and the movable die 7, and has a pair of receiving rollers 21. It winds up to the winding reel 18 by this. In the present embodiment, the foil feeding mechanism 22 is configured by the supply reel 17 and the pair of take-out rollers 19, and the foil winding mechanism 23 is formed by the winding reel 18 and the receiving roller 21. ) Is configured. In this way, the transfer printing foil 20 is conveyed downward from the upper side of the molding machine 2 as shown in FIG.

The transfer portion 25 is provided on one surface 24 of the transfer printing foil 20. A plurality of transfer portions 25 are arranged in the longitudinal direction of the transfer printing foil 20 at predetermined intervals.

In the foil conveying means 4, the foil conveyance mechanism 22 and the foil winding mechanism 23 are driven simultaneously, and the transfer printing foil 20 is sent out in a fixed amount, and the transfer portion 25 of the foil for transfer printing 20 is transferred. Is positioned at the cavity 9 of the movable die 7. In addition, alignment of the transfer part 25 to the cavity 9 is performed more accurately, for example by image processing by a CCD camera.

The foil conveying means 5 has the supply reel 26 and the winding reel 27 provided in the both sides of the width direction (up-down direction of FIG. 2) of the molding machine 2. As shown in FIG. In FIG. 2, the foil conveying means 5 is arrange | positioned at the stationary 6 side. The transfer printing foil 29 drawn out from the supply reel 26 by the pair of take-out rollers 28 passes between the stationary die 6 and the movable die 7, and the pair of receiving rollers 30 It winds up by the winding reel 27 by the. In this embodiment, the foil reeling mechanism 31 is comprised by the supply reel 26 and the pair of draw-out rollers 28, and the foil reeling mechanism 32 is comprised by the winding reel 27 and the accommodation roller 30. As shown in FIG. ) Is configured. Thus, the foil 29 for transfer printing is conveyed toward the width direction of the molding machine 2, as shown in FIG.

The transfer portion 34 is provided on one surface 33 of the transfer printing foil 29. A plurality of transfer parts 34 are arranged in the longitudinal direction of the transfer printing foil 29 at predetermined intervals.

Also in the foil conveyance means 5, the foil conveyance mechanism 31 and the foil winding mechanism 32 are driven simultaneously, and the transfer printing foil 29 is sent out by a certain amount, and the transfer part 34 of the transfer printing foil 29 is carried out. Is positioned at the cavity 8 of the movable die 6. In addition, alignment of the transfer part 34 to the cavity 8 is performed more accurately, for example by image processing by a CCD camera.

In the present embodiment, the stationary die 6 is bent to the divided surface 36 of the die 3 by bending one end portion in the width direction of the transfer printing foil 29 at the stationary die 6 to the stationary die 6. The block body 35 which clamps and supports between is provided. The block 35 is provided with a runner 37 for forming an injection resin flow path, and the resin passing through the runner 37 is formed from the gate 38 formed on the divided surface 36 of the mold 3. It is made to inject into the space formed by the cavities 8 and 9.

The block body 35 is connected to the stationary die 6 via springs 39 and 40. The block 35 is urged in a direction away from the stationary die 6 by springs 39 and 40. For this reason, in the mold opening state, since the clearance gap 41 is formed between the block 35 and the stationary die 6, the edge part 42 of the width direction of the transfer printing foil 29 is simply made into the said clearance gap 41. ) Can be inserted. In addition, at the time of mold clamping, the block body 35 is pushed to the fixed mold side against the pressing force of the springs 39 and 40, so that the gap 41 disappears and the end portion in the width direction of the transfer printing foil 29 ( 42) is supported. In this embodiment, the block body 35 forms a part of the dividing surface 36 of the metal mold | die 3.

The manufacturing method of the transcription-printed molded article which concerns on this invention using the molding simultaneous printing apparatus 1 like this embodiment is performed as follows. The foil conveying means 4 and the foil conveying means 5 are driven to position the transfer portions 25 and 34 to the cavities 9 and 8. In this state, the movable die 7 is clamped. Further, resin is injected from the injection molding machine 2 and filled in the space formed by the cavities 8 and 9 to form a molded article. At the same time, the designs of the transfer sections 25 and 34 are transferred to both sides of the molded article by the molded article side row immediately after molding, so that the transfer printed molded article 43 is manufactured.

In such a method, the end portion 42 in the width direction of the transfer printing foil 29 is bent with respect to the dividing surface 36 of the mold 3 at the time of the mold fastening of the mold 3. It is clamped between the stationary mold 6. That is, since the edge part 42 of the width direction of the transfer printing foil 29 is clamped by the surface different from the dividing surface 36 of the metal mold | die 3, inversion of the transfer printing foil 29 at the time of injection is carried out. The inflow of resin to the slope side surface 44 is reliably prevented. Therefore, the occurrence of molding failure and transfer failure is effectively suppressed.

Moreover, the block body 35 is comprised so that a movement is possible in the simple structure which uses the opening-closing of the metal mold 3, and the pressing force of the springs 39 and 40, and has a special drive means (for example, an air cylinder). There is no need to provide. Therefore, the complexity, enlargement, and cost increase of the metal mold | die and the whole apparatus can be prevented.

The molding simultaneous printing apparatus and the method of manufacturing a transfer-printed molded article according to the present invention can be widely used, for example, in the production of a transfer-printed molded article in which characters, patterns, and the like are transferred and printed on the molded article surface.

Claims (6)

An injection molding machine, a mold to be mounted on the injection molding machine, a transfer printing foil having a plurality of transfer portions printed at predetermined intervals in a longitudinal direction, a foil feeding mechanism for sending the transfer portion of the transfer printing foil into the mold in order; In the simultaneous molding apparatus for printing, comprising a foil conveying means having a foil winding mechanism for winding the foil for transfer printing from within the mold, injecting the resin into the mold-fastened mold, and simultaneously performing molding and transfer printing onto the surface of the molded article. , At least one of the movable mold or the fixed mold of the mold is provided with a block body for bending at least one end of the width direction of the transfer printing foil to the divided surface of the mold when the mold is fastened with the movable mold or the fixed mold. And a spring for urging the block body in a direction away from the stationary mold or in a direction away from the movable mold at the time of mold opening of the mold. The molding simultaneous printing apparatus according to claim 1, wherein a runner is formed in the block body. The molding simultaneous printing apparatus according to claim 1, wherein the block body forms a part of a divided surface of the mold. The molding simultaneous printing apparatus according to claim 1, wherein a plurality of foil conveying means is provided in the molding simultaneous printing apparatus, and transfer printing is possible on both surfaces of the molded article. The molding simultaneous printing apparatus according to claim 4, wherein the foil conveyance directions of the plurality of foil conveying means are different from each other. An injection molding machine, a mold to be mounted on the injection molding machine, a transfer printing foil having a plurality of transfer portions printed at predetermined intervals in a longitudinal direction, a foil feeding mechanism for sending the transfer portion of the transfer printing foil into the mold in order; It is provided with a foil conveying means having a foil winding mechanism for winding the foil for transfer printing foil from within the mold, the resin is injected into the mold fastened mold, and the transfer printing to the surface of the molded product and the molding is performed simultaneously to produce a transfer printing molded article At this time, the block body is provided on at least one of the movable mold or the fixed mold of the mold, and at least one end of the width direction of the transfer printing foil is bent with respect to the divided surface of the mold during the mold clamping of the mold, and the block body and the movable mold or the fixed mold are fixed. While sandwiching and supporting the mold, the block body is spaced apart from the stationary mold when the mold is opened. The method of transfer printing molded product characterized in that the pressure of a spring toward the direction away from the movable die.

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