JP4379874B2 - Simultaneous molding printing system and method for producing transfer printing molded product - Google Patents

Description

  The present invention relates to a simultaneous molding printing system for simultaneously performing molding and transfer printing on the surface of a molded product in a mold, and a method for manufacturing a transfer printed molded product, and in particular, transfer in which transfer printing is performed on both sides of the molded product. The present invention relates to a simultaneous molding printing system and a transfer printing molded product manufacturing method suitable for manufacturing a printed molded product.

  Conventionally, as shown in FIG. 4, a simultaneous molding printing system that performs transfer printing on both sides of a molded product simultaneously with molding at the time of molding is known. In FIG. 4, reference numeral 100 denotes a mold. The mold 100 is attached to an injection molding machine (not shown) and includes a fixed mold 101 and a movable mold 102. The fixed mold 101 and the movable mold 102 are formed with cavities 103 and 104 for molding the product portion. In the fixed mold 101, an abutting portion 105 and a runner 106 with which the tip of an injection nozzle of the molding machine abuts are provided. Reference numeral 107 denotes a foil feeding means for a transfer printing foil described later. The foil feeding means 107 has a supply reel 108 provided above the molding machine and a take-up reel 109 provided below the molding machine 2. In FIG. 4, the foil feeding means 107 is arranged on the movable mold 102 side. The transfer printing foil 111 drawn from the supply reel 108 by the rotation of the pair of drawing rollers 110 passes between the fixed mold 101 and the movable mold 102, and is wound around the take-up reel 109 by the rotation of the pair of drawing rollers 112. It is supposed to be turned. In the system of FIG. 4, a foil feeding mechanism 113 is configured by the supply reel 108 and the pair of drawing rollers 110, and a foil winding mechanism 114 is configured by the winding reel 109 and the pair of drawing rollers 112.

  A transfer portion 115 is provided on one surface 120 of the transfer printing foil 111. A plurality of transfer portions 115 are arranged in the longitudinal direction of the transfer printing foil 111 at a predetermined interval. As shown in FIG. 4, the transfer printing foil 111 is sent from the upper side to the lower side of the molding machine.

  In the foil feeding means 107, the foil feeding mechanism 113 and the foil winding mechanism 114 are simultaneously driven to feed a certain amount of the transfer printing foil 111, and the transfer portion 105 of the transfer printing foil 111 is movable. It is intended to be aligned with the cavity 104 of 102. Note that the alignment of the transfer unit 105 with respect to the cavity 104 is performed accurately by, for example, image processing using a CCD camera.

  Further, in the simultaneous molding and printing system as described above, the foil feeding means 116 having substantially the same configuration as the foil feeding means 107 is also provided on the fixed mold 101 side. The transfer unit 118 on the one surface 121 of the transfer printing foil 117 is accurately aligned with the cavity 103 of the movable mold 101 by driving the foil feeding means 116.

  In such a simultaneous molding and printing system, the transfer units 115 and 118 are aligned with the cavities 103 and 104 by driving the foil feeding unit 107 and the foil feeding unit 116. In this state, the movable mold 102 moves in the direction of the arrow in FIG. Further, resin is filled into the spaces formed in the cavities 103 and 104 from the injection molding machine, and the molded product 119 is molded. At the same time, the design of the transfer portions 115 and 118 is transferred to both surfaces of the molded product 119 by heat on the molded product 119 side immediately after molding.

However, in the simultaneous molding and printing system as described above, when the mold 100 is clamped, both end portions in the width direction of the respective transfer printing foils 111 and 117 are separated by the dividing surfaces 124 (parting surfaces) of the mold 100. ), The injected resin may flow from the end in the width direction of the transfer printing foils 111 and 117 to the surfaces 122 and 123 on the side opposite to the transfer portion. If such an inflow of resin occurs, there is a risk of causing molding defects and transfer defects.
JP 2004-074476 A

  Therefore, the object of the present invention is to focus on the problems in the system as described above, and reliably eliminate the possibility of molding defects and transfer defects due to the inflow of resin to the surface on the side opposite to the transfer portion of the transfer printing foil. Another object of the present invention is to provide a simultaneous molding printing system and a method for producing a transfer printing molded product.

In order to solve the above-described problems, a simultaneous molding and printing system according to the present invention includes an injection molding machine, a mold attached to the injection molding machine, and a plurality of transfer portions printed at predetermined intervals in the longitudinal direction. Foil feeding having a transfer printing foil, a foil feeding mechanism for sequentially feeding a transfer portion of the transfer printing foil into the mold, and a foil winding mechanism for winding the transferred transfer printing foil from the mold And a molding simultaneous printing system in which resin is injected into a mold that has been clamped and molding and transfer printing onto the surface of the molded article are performed simultaneously. At least one of the movable mold and the fixed mold In addition, a block body is provided in which at least one end in the width direction of the transfer printing foil is folded with respect to the mold dividing surface and clamped between the movable mold or the fixed mold when the mold is clamped , and Block body when mold is opened Consisting of those which characterized in that a spring biasing the anti-fixed-side or counter movable mold side. In such a configuration, when the mold is clamped, the block body is pushed back to the fixed mold side or the movable mold side against the urging force of the spring, so that the end in the width direction of the transfer printing foil is easily sandwiched. it can. That is, at the time of molding, the end portion in the width direction of the transfer printing foil is sandwiched by a surface different from the dividing surface of the mold, so the surface on the side opposite to the transfer portion of the transfer printing foil at the time of injection Inflow of resin into the tube is reliably prevented. Further, when the mold is opened, a gap is formed between the block body and the fixed mold or the movable mold, so that the end in the width direction of the transfer printing foil can be easily inserted into the gap.

  A runner can be formed on the block body.

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

  In the simultaneous molding and printing system according to the present invention, a plurality of foil feeding means, for example, two foil feeding means can be provided. If a plurality of foil feeding means are provided, it is possible to simultaneously transfer and print on both surfaces of the molded product. Moreover, in such an aspect, the foil feeding directions of the foil feeding means can be set in different directions. For example, in an aspect in which two foil feeding means are provided, when the foil feeding direction of one foil feeding means is set to the vertical direction of the molding machine, the foil feeding direction of the other foil feeding means is the same as that of the molding machine. Can be set in the width direction.

In addition, in order to solve the above-described problems, a method for producing a transfer printed molded product according to the present invention includes an injection molding machine, a mold attached to the injection molding machine, and a transfer portion having a predetermined interval in the longitudinal direction. A plurality of transfer printing foils, a foil feeding mechanism for sequentially feeding the transfer printing foil transfer portion into the mold, and a foil winding mechanism for winding the transferred transfer printing foil from the mold. And a foil feeding means having a mold, and injecting a resin into a mold that is clamped, and simultaneously performing molding and transfer printing on the surface of the molded product to produce a transfer printed molded product. A block body is provided on at least one of the movable mold and the stationary mold, and at least one end portion in the width direction of the transfer printing foil is bent with respect to the dividing surface of the mold when the mold is clamped. while sandwiched between the stationary die, the gold It comprises a method for biasing a spring block body opposite to the fixed mold side or counter movable mold side during the mold opening.

  According to the molding simultaneous printing system and the method for producing a transfer printing molded product according to the present invention, the end in the width direction of the transfer printing foil is sandwiched between different surfaces of the mold dividing surface. The inflow of the resin to the surface on the side opposite to the transfer portion of the transfer printing foil at the time of injection is reliably prevented, and the occurrence of molding defects and transfer defects due to the inflow of the resin can be effectively prevented.

Hereinafter, preferred embodiments of the simultaneous molding and printing system of the present invention will be described with reference to the drawings.
1 to 3 show a simultaneous molding printing system according to an embodiment of the present invention. The simultaneous molding and printing system 1 includes an injection molding machine 2, a mold 3 attached to the molding machine 2, and foil feeding means 4 and 5.

  The mold 3 includes a fixed mold 6 and a movable mold 7 that are divided by a dividing surface 36 described later. The fixed mold 6 and the movable mold 7 are formed with cavities 8 and 9 for molding the product portion. The fixed die 6 is fixed to the fixed side plate 10 of the molding machine 2. In the fixed mold 6, there is provided a contact portion 11 with which the tip of the injection nozzle 12 of the molding machine 2 contacts. The injection nozzle 12 and the injection table 14 are configured to be movable on the base 15 of the molding machine 2 in the direction of the arrow in FIG.

  The movable mold 7 is fixed to the movable side plate 16 of the molding machine 2, and the mold 3 is clamped and opened by moving together with the movable side plate 16 in the direction of the arrow in FIG. ing.

  The simultaneous molding and printing system 1 according to the present embodiment includes two foil feeding units 4 and 5. The foil feeding means 4 has a supply reel 17 provided above the molding machine 2 and a take-up reel 18 provided below the molding machine 2. In FIG. 1, the foil feeding means 4 is disposed on the movable mold 7 side. The transfer printing foil 20 drawn from the supply reel 17 by the pair of drawing rollers 19 passes between the fixed die 6 and the movable die 7 and is wound around the take-up reel 18 by the pair of take-up rollers 21. It has become. In this embodiment, the supply reel 17 and the pair of drawing rollers 19 constitute a foil feed mechanism 22, and the take-up reel 18 and the take-up roller 21 constitute a foil take-up mechanism 23. In this way, the transfer printing foil 20 is sent from the upper side to the lower side of the molding machine 2 as shown in FIG.

  A 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 a predetermined interval.

  In the foil feeding means 4, the foil feeding mechanism 22 and the foil winding mechanism 23 are simultaneously driven to feed a certain amount of the transfer printing foil 20, and the transfer portion 25 of the transfer printing foil 20 is movable. 7 is aligned with the cavity 9. Note that the alignment of the transfer section 25 with the cavity 9 is accurately performed by image processing using a CCD camera, for example.

  The foil feeding means 5 has a supply reel 26 and a take-up reel 27 provided on both sides of the molding machine 2 in the width direction (vertical direction in FIG. 2). In FIG. 2, the foil feeding means 5 is disposed on the fixed mold 6 side. The transfer printing foil 29 drawn from the supply reel 26 by the pair of drawing rollers 28 passes between the fixed mold 6 and the movable mold 7 and is wound around the take-up reel 27 by the pair of drawing rollers 30. It has become. In this embodiment, the supply reel 26 and the pair of drawing rollers 28 constitute a foil feeding mechanism 31, and the winding reel 27 and the drawing roller 30 constitute a foil winding mechanism 32. In this way, the transfer printing foil 29 is fed in the width direction of the molding machine 2 as shown in FIG.

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

  Also in the foil feeding means 5, the foil feeding mechanism 31 and the foil winding mechanism 32 are simultaneously driven to feed a certain amount of the transfer printing foil 29, and the transfer portion 34 of the transfer printing foil 29 is moved to the movable die 6. Are aligned with the cavities 8. The alignment of the transfer unit 34 with the cavity 8 is accurately performed by image processing using a CCD camera, for example.

  In the present embodiment, the fixed mold 6 is formed by bending one end portion of the transfer printing foil 29 in the width direction with respect to the dividing surface 36 of the mold 3 when the mold 3 is clamped. A block body 35 sandwiched between the two is provided. The block body 35 is provided with a runner 37 that forms a flow path of the injection resin, and the resin that has passed through the runner 37 is formed by the cavities 8 and 9 from the gate 38 formed on the dividing surface 36 of the mold 3. It is designed to be injected into the space where

  The block body 35 is connected to the fixed mold 6 via springs 39 and 40. The block body 35 is biased in a direction away from the fixed mold 6 by springs 39 and 40. For this reason, since the gap 41 is formed between the block body 35 and the fixed mold 6 in the mold open state, the end 42 in the width direction of the transfer printing foil 29 can be easily inserted into the gap 41. At the time of mold clamping, the block body 35 is pushed back to the fixed mold side against the urging force of the springs 39 and 40, so that the gap 41 disappears and the end 42 in the width direction of the transfer printing foil 29 is held. Is done. In the present embodiment, the block body 35 forms a part of the dividing surface 36 of the mold 3.

  Using the simultaneous molding and printing system 1 as in this embodiment, the method for producing a transfer printing molded product according to the present invention is performed as follows. The transfer units 25 and 34 are aligned with the cavities 9 and 8 by driving the foil feeding unit 4 and the foil feeding unit 5. In this state, the movable mold 7 is clamped. Further, a resin is injected from the injection molding machine 2 and filled into a space formed by the cavities 8 and 9 to form a molded product. At the same time, the design of the transfer parts 25 and 34 is transferred to both surfaces of the molded product by the heat of the molded product immediately after molding, so that the transfer printed molded product 43 is manufactured.

  In such a method, when the mold 3 is clamped, the end portion 42 in the width direction of the transfer printing foil 29 is bent between the divided surface 36 of the mold 3 and the block body 35 and the fixed mold 6. Sandwiched between. That is, since the end 42 in the width direction of the transfer printing foil 29 is sandwiched by a surface different from the dividing surface 36 of the mold 3, Inflow of resin to the surface 44 is reliably prevented.

  The simultaneous molding and printing system and the method for producing a transfer printing molded product according to the present invention can be widely used in the production of a transfer printing molded product in which, for example, characters, designs, etc. are transferred and printed on the surface of the molded product.

1 is a schematic configuration diagram of a simultaneous molding printing system according to an embodiment of the present invention. It is an arrow line view from the II-II direction of the simultaneous shaping | molding printing system of FIG. FIG. 2 is an enlarged cross-sectional view in the vicinity of a dividing surface of a mold of the simultaneous molding and printing system of FIG. It is a schematic block diagram of the conventional simultaneous molding printing system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Simultaneous molding printing system 2 Injection molding machine 3 Mold 4, 5 Foil feed means 6 Fixed mold 7 Movable mold 8, 9 Cavity 10 Fixed side plate 11 Nozzle contact part of molding machine 12 Injection nozzle 14 Injection table 15 Base 16 Movable side plate 17, 26 Supply reel 18, 27 Take-up reel 19, 28 A pair of draw rollers 20, 29 Transfer printing foil 21, 30 Take-up rollers 22, 31 Foil feed mechanism 23, 32 Foil take-up mechanism 24, 33 One side of transfer printing foil 25, 34 Transfer part of transfer printing foil 35 Block body 36 Dividing surface of mold 37 Runner 38 Gate 39, 40 Spring 41 Gap formed between fixed mold and block body 42 Transfer printing foil End part in the width direction of the sheet 43 Transfer printing molded product 44 Surface on the side opposite to the transfer part of the foil for transfer printing

Claims (6)

An injection molding machine, a mold attached to the injection molding machine, a transfer printing foil in which a plurality of transfer portions are printed at predetermined intervals in the longitudinal direction, and a transfer portion of the transfer printing foil are sequentially transferred to the mold. A foil feeding mechanism having a foil feeding mechanism for feeding into a mold and a foil winding mechanism for winding the transferred printing foil from the mold, and injecting resin into the mold that has been clamped, In a simultaneous molding printing system that simultaneously performs molding and transfer printing on the surface of the molded product, at least one of the movable mold and the stationary mold of the mold and at least the width direction of the transfer printing foil when the mold is clamped One end is bent with respect to the dividing surface of the mold to provide a block body that is sandwiched between the movable mold or the fixed mold, and when the mold is opened, the block body is placed on the anti-fixed mold side or the anti-movable mold side. in that a spring for urging the Molding simultaneous printing system to a butterfly.   The simultaneous molding printing system according to claim 1, wherein a runner is formed on the block body. The simultaneous molding and printing system according to claim 1 or 2, wherein the block body forms a part of a dividing surface of the mold. The simultaneous molding printing system according to any one of claims 1 to 3 , wherein the simultaneous molding printing system is provided with a plurality of foil feeding means and is capable of transfer printing on both surfaces of the molded product . The simultaneous forming printing system according to claim 4 , wherein the foil feeding directions of the plurality of foil feeding means are different from each other . An injection molding machine, a mold attached to the injection molding machine, a transfer printing foil in which a plurality of transfer portions are printed at predetermined intervals in the longitudinal direction, and a transfer portion of the transfer printing foil are sequentially transferred to the mold. A foil feeding mechanism having a foil feeding mechanism for feeding into a mold and a foil winding mechanism for winding the transferred printing foil from the mold, and injecting resin into the mold that has been clamped, When manufacturing a transfer printing molded product by simultaneously performing molding and transfer printing on the surface of the molded product, a block body is provided on at least one of the movable mold and the fixed mold of the mold, and transfer printing is performed when the mold is clamped. At least one end in the width direction of the foil is bent with respect to the dividing surface of the mold and sandwiched between the block body and the movable or fixed mold, and the block body is anti-fixed when the mold is opened. Energized with a spring on the side or the non-movable side Method for producing a transfer printing molded product, characterized in that.

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