KR100853121B1 - In-molk injection molding device - Google Patents

Abstract

An in-mold type injection molding apparatus is provided to reduce defective factors for laminating parts by performing a skin material vacuum molding process separately from in-mold process. An in-mold type injection molding apparatus comprises two first molds(10) and one second mold(20) to perform an in-mold type injecting process, in which a laminated part having a skin material is integrally formed on one side of a substrate. An upper surface of the first mold and a lower surface of the second mold are provided with a first forming portion for a molding space and a second forming portion(21) for a molding space, respectively. The first mold is provided with a plurality of air holes to pick up the skin material using vacuum such that the skin material is attached to the substrate. The second mold is provided with an injection path(22) to inject molten resin to a molding space and an eject structure to eject a molded product.

Description

In-mold Injection Machine {IN-MOLK INJECTION MOLDING DEVICE}

1 is a plan view showing the overall structure of the injection molding apparatus of the in-mold injection apparatus according to an embodiment of the present invention.

Figure 2 is a plan view showing the structure of the transfer unit in the injection molding apparatus of the in-mold injection apparatus according to an embodiment of the present invention.

Figure 3 is a side view showing the structure of a vacuum suction unit in the injection molding apparatus of the in-mold injection apparatus according to an embodiment of the present invention.

Figure 4 is a side view sequentially showing a process in which the skin is supplied to the first mold by the vacuum suction unit in the injection molding apparatus of the in-mold injection apparatus according to an embodiment of the present invention by vacuum suction.

Figure 5 is a side view showing the structure of the injection unit in the injection molding apparatus of the in-mold injection apparatus according to an embodiment of the present invention.

6 is a side view sequentially showing a process of injecting the skin-integrated substrate by the injection unit in the injection molding apparatus of the in-mold injection apparatus according to an embodiment of the present invention.

Figure 7 is a side view showing the structure of the finishing device of the in-mold injection apparatus according to an embodiment of the present invention.

8 is a side view sequentially showing a finishing process by the finishing device of the in-mold injection apparatus according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1: skin material 2: base material

2A: molten resin 10: first mold

11:; 1st molding space forming part 12: air ball

13: Day acceptance groove 20: Second mold

21: second molding space forming unit 22: injection flow path

23: cutting edge 30: forming space

40: transfer unit 50: vacuum adsorption unit

60: injection unit

The present invention relates to an in-mold injection apparatus, and more particularly, to an in-mold injection apparatus for molding a skin material and a substrate-integrated laminating parts, such as automotive interior materials.

In general, laminating parts such as interior materials of automobiles are used in order to prevent the surface of the product from being exposed to the outside, and to produce the atmosphere of the space installed like the interior of a car more elegantly, such as stock covers such as PVC, TPO, or fabrics such as cloth. The laminate skin material in which the PE or PP foam layers are fused to each other is attached to the surface of the substrate. Thus, the laminating component composed of the bonding of the skin material and the substrate is usually formed by a wrapping method or an in-mold injection device.

In addition, the conventional in-mold injection apparatus is composed of two main methods, one of which first ejects or applies resin onto the lower core mold, and is then lowered into the lower mold while the preheated soft skin material lowered into the upper cavity mold is fixed with pins. The vertical low pressure injection or RIM, which produces interior parts in which the skin material and the substrate are bonded by compressing the molten resin applied in the process of molding and spreading evenly with a similar thickness throughout the molding space provided between the lower mold and the upper mold. System ”.

The other is a horizontal in-mold injection apparatus, which has a fixed side mold and a moving side mold which are provided to be mutually separable and detachable. A molding space is formed between the fixed side mold and the moving side mold, and an injection passage communicating with the molding space is formed in the fixed side mold. Therefore, in order to in-mold the parts in which the soft skin material is integrally attached to the surface of the substrate through the conventional horizontal in-mold injection device, the skin material is first inserted into the front end of the moving side mold and then attached with a device such as a pin. By moving the mold part of the injection device, the fixed side mold and the moving side mold are clamped and the core part of the fixed side mold is pushed into the cavity of the moving side mold and the movable side is pushed into the cavity of the moving side mold. In the mold, the skin material is fixed by vacuum adsorption, the fixed side mold and the moving side mold are clamped, and molten resin is injected into the molding space through the injection passage. At this time, high injection pressure and heat are applied to the skin material in contact with the gate. Therefore, in order to prevent the skin material from being damaged, the mold is fixed and the moving mold is injected in-mold onto the skin material, and then the moving mold is cooled in the cooling process. “Multi-level micro-shape control system” that enables the skin material pressed during the injection process to be fine-opened to restore the original shape and the mold on the fixed side and the moving side to start the injection onto the skin and simultaneously After releasing the cavities placed, release the injection pressure applied to the skin material, and then the cavities of the moving mold move forward again to form the fixed side mold and the mold, and the molten resin injected between the fixed side mold and the moving side mold It is pressed to spread evenly and evenly with similar thickness throughout the hieroglyphic space provided in Material is to produce a bonded interior parts "in-mold of the press method and then vacuum de-injection system".

When the bonding between the molten resin and the skin material is completed through the above methods, the skin material is released to the upper or fixed mold when the upper or fixed mold and the lower or movable mold are separated from each other through a constant component cooling time. The laminating part, in which the substrate is integrally bonded, is taken out through the ejecting process, thereby completing the in-mold injection operation.

However, in such a conventional vertical low pressure injection device, a soft preheated skin material, which is simply attached to the bottom of the upper mold, is ejected or overlaid onto the lower mold without pressing a separate vacuum molding process for the laminate skin, and is pressed in the molding process. As a result, the wrinkles in the bent portion or the unevenness of the epidermal pattern on the edges is generated.

Similarly, in the horizontal in-mold injection device, the laminate skin material in which the protruding core shape of the fixed side mold is preheated is pushed into the cavity of the moving side mold while the fixed side mold and the moving side mold are molded. At the same time, the work of fixing the skin by vacuum adsorption and the in-mold operation of injecting molten resin back to the back of the skin are performed at almost the same time. Since the vacuum state of the skin material is made only after the complete process, the degree of stretching is different for each part of the skin material. Particularly, the surface of the skin material is unfolded at the corners with large bends, and the cause of wrinkles in the skin material is caused. Will occur. In addition, since the pre-heated soft skin material is in-mold injection immediately before the tableware is cut, the cushion of the skin material is pressed by the injection pressure, and if it is damaged or severely, the skin material of the gate part may be a defective factor.

In order to remove the defects caused by the existing in-mold process, it is essential to separate the skin vacuum forming process from the in-mold injection process, as in the current automobile crash pad vacuum forming method. However, when the two processes are separated, the technical difficulties in removing and transferring the vacuum-formed skin material to the in-mold mold, as well as the increase in parts cost due to the decrease in productivity and excessive labor input due to the disconnection of the process, can occur. do.

In addition, the laminate in-mold parts extracted from the molding space are subjected to a finishing process of wrapping the edge bonded to the base material and the skin material with the skin material. Trimming to cut and remove the remaining skin material is performed by hand. After the trimming operation, the wrapper remaining on the joint edge is wound on the inner surface of the substrate, and is subjected to a wrapping process. A worker sprays a chemical adhesive on the inner surface of the substrate and wraps and attaches the cuticle. At this time, the use of the chemical adhesive that generates harmful VOC (volatile organic compound) is not only worsen the working environment, but also the operator cuts and removes the cuticle material by hand and adheres the remaining parts to the inner surface of the product. This slows down production and increases component costs. In addition, due to the use of such chemical adhesives, scrapped parts generated during operation or scrapped parts generated from scrapped vehicles cannot be recycled, and all of them must be incinerated.

The present invention is to solve such a problem in the prior art, an object of the present invention is to laminate the parts by performing the vacuum molding process and the in-mold molding separately from each other in the in-mold molding of the skin material and the substrate integrated laminating parts, such as automotive interior materials In-mold process can be carried out while eliminating the causes of defects and at the same time the in-mold process is carried out while the vacuum-formed skin is kept in the mold. To provide an injection device.

It is still another object of the present invention to provide an in-mold injection apparatus provided to bond to mass production of more environmentally friendly integrated laminating interior parts, avoiding a chemical adhesive wrapping process that could not be avoided in the production of existing in-mold parts.

To this end, the in-mold injection apparatus according to the present invention is for in-mold injection of the skin material and the substrate-integrated laminating part, and has a first position to a third position arranged in succession and a pair of first molds, respectively. A transfer unit arranged to repeatedly perform the transfer from the first and second positions to the second and third positions and then to the first and second positions; A pair of vacuum adsorption units respectively provided around the first and third positions to supply and vacuum the skin material on the first mold transferred to the first and third positions; The second mold and the back surface of the skin material vacuum-absorbed in the first mold by engaging the second mold with the first mold transferred to the second position while the skin material is vacuum-adsorbed in the first or third position. And an injection unit provided around the second position to inject the molten resin into the molding space formed therebetween so as to inject the base material having the skin material integrally formed therebetween.

And the first mold is formed with an air hole for vacuum adsorption of the skin material, the vacuum suction unit is a skin material supply device for supplying the skin material toward the first mold, and the skin material waiting to be supplied toward the first mold It is characterized in that it comprises a preheating device for heating the, and a sealing device provided to be able to lift on the upper portion of the first mold to cover and seal the top of the skin material.

In addition, a first molding space forming part and a second molding space forming part are formed on the mutually opposite surfaces of the first mold and the second mold to form the molding space in a state where the first mold and the second mold are engaged with each other. The sealing device includes a sealing cap provided to press and fix the outer skin material on the outer side of the first molding space forming part and seal the upper space of the skin material, and the inner skin material fixed by the sealing cap while being positioned inside the sealing cap. And a pressing member provided to press a portion corresponding to the first molding space forming part to the inside of the first molding space forming part.

Further, while the first mold of one of the first molds performs the vacuum molding on the skin material preheated at the first or third position, the second position is maintained while maintaining the skin material which has been vacuum-formed in the previous stroke. The other first mold moved to the second mold is engaged with the second mold to simultaneously perform in-mold molding, so that the vacuum molding process and the in-mold process are performed independently of each other, and after a predetermined cooling time, the second mold is moved to the second mold. The first mold, which is empty from the first molding space forming part, is immediately moved to a third or first position in order to perform the next skin material vacuum forming process when the first molding space forming part is hung and separated from the first mold. At the same time, the other first mold having completed the skin vacuum forming in the first or third position is moved to the second position for the next in-mold molding by vacuum forming. Jung characterized in that provided that in-mold process is carried out continuously.

In addition, the second mold has an injection passage formed to communicate with the molding space to inject the molten resin into the molding space and is provided to be elevated in the second position, the injection unit is in engagement with the first mold And an injection table installed to be able to move back and forth toward the inlet of the injection passage so as to supply the molten resin to the injection passage of the second mold lowered to be lowered.

In addition, a first molding space forming part and a second molding space forming part are formed on the mutually opposing surfaces of the first mold and the second mold to form the molding space in a state where the first mold and the second mold are engaged with each other. The second mold around the second molding space forming part is provided with a cutting blade for cutting the skin material outside the molding space, and the first mold around the first molding space forming part is for accommodating the cutting blade. It is characterized in that the blade receiving groove is provided.

In addition, the injection unit includes a clamping device for lifting and lowering the second mold, the sealing device is connected to the connecting frame extending from the clamping device to move up and down with the second mold, the pressing member is sealed The outer surface material of the outer side of the first molding space forming portion is pressed through a cap and is fixed to push the skin material corresponding to the first molding space forming portion into the first molding space forming portion. It is done.

The apparatus may further include a finishing device wrapping and attaching the outer edge of the skin material to the back surface of the laminating part taken out in the state of integrally injecting the skin material between the first mold and the second mold, and the finishing device is the finishing device. Characterized in that it is provided to heat-sealed the bag on the back of the substrate.

In addition, the finishing device is a receiving jig for receiving the laminating component so that the back side of the substrate facing upwards, a wrapping device for wrapping the skin material of the laminating component accommodated in the receiving jig toward the back of the substrate, and the substrate And a thermal fusion electrode rotatably installed toward the rear surface.

In addition, the wrapping device is provided with a holding jig of the hook-shaped fixed jig, and the support jig is provided in the state of supporting the lower portion of the pressing portion is provided in the lifting operation is pressed by the pressing portion to the pressing portion in the pressing portion It characterized in that it comprises a platform for drying the back.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment according to the present invention will be described in detail.

1 to 6, in the in-mold injection apparatus according to an embodiment of the present invention, the structure of the injection processing apparatus is shown first.

The injection processing plant according to the present embodiment is for in-mold injection of a laminate part in which the skin agent 1 is integrally provided on one surface of the base material 2, such as automobile interior materials, and the first two molds 10 and One second mold 20 is provided. The first molding space forming part 11 and the second molding space forming part 21 are provided on the upper surface of the first mold 10 and the lower surface of the second mold 20, respectively. The first molding space forming unit 11 is formed in an intaglio form, and the second molding space forming unit 21 has an embossing form. The first and second molding space forming parts 11 and 21 form the molding space 30 therebetween while the first mold 10 and the second mold 20 are engaged with each other. .

A plurality of air holes 12 are formed in the first mold 10 to fix the skin 1 by vacuum suction, and the molten resin is injected into the molding space 30 in the second mold 20. An injection passage 22 for forming and an ejector structure 24 for extracting parts are formed.

In addition, the injection temporary factory according to the present embodiment includes a transfer unit 40 provided to slide the two first molds 10 to both left and right sides.

As shown in FIG. 2, the transfer unit 40 is installed on the transfer conveyor 41 so that the transfer conveyor 41 and the two first molds 10 can be mounted. It may be provided with a fixed plate (42). The upper region of the conveying conveyor 41 is sequentially divided into a first position 40a, a second position 40b, and a third position 40c from one side along the longitudinal direction of the conveying conveyor 41. The transfer unit 40 transfers the fixed plate 42 to one side of the transfer conveyor 41 when the transfer conveyor 41 rotates in one direction according to the driving of a conveyor driving means (not shown). 10 is positioned at the first position 40a and the second position 40b, respectively, and when the transfer conveyor 41 rotates in the opposite direction, the fixed plate 42 is moved to the transfer conveyor 41. The two first molds 10 are positioned at the second position 40b and the third position 40c, respectively. This operation is repeated in connection with the injection process by a control program (not shown). Will be made.

The vacuum is supplied by supplying the skin 1 to the first mold 10 transferred to the first or third positions 40a and 40c around the first position 40a and the third position 40c. Vacuum adsorption units 50 are provided for adsorption, respectively, and the second position 40b is disposed at the second position (a) from the first or third position 40a, 40c in a state in which the vacuum suction of the skin material 1 is completed. The second mold 20 is shaped into the first mold 10 transferred to 40b), and molten resin is injected into the molding space 30 formed therebetween to cover the skin 1 and the substrate 2. ) Is provided with an injection unit 60 for injecting a laminating component provided integrally.

As shown in FIG. 3, the vacuum adsorption unit 50 includes a skin material supply device 51 for supplying the skin material 1 toward the first mold 10 and the first mold 10 toward the first mold 10. A preheating device 52 which heats the skin 1 waiting to be supplied so that wrinkles are not formed on the skin 1 during the process in which the skin 1 is vacuum-adsorbed to the first mold 10; It is configured to include a sealing device 53 is installed so as to be elevated on the upper portion of the first mold 10 to cover and seal the upper portion of the skin material (1) supplied to the mold (10).

The skin material supply device 51 has a winding roller 51a in which the skin material 1 is wound in the form of a roll, and the skin 1 wound around the winding roller 51a is disposed below the winding roller 51a. A guide plate 51b for guiding toward the first mold 10 is provided, and the preheating device 52 is installed in the middle of the guide plate 51b.

On the guide plate 51b between the preheater 52 and the take-up roller 51a, a feed roller 51c for supplying the skin material 1 wound on the take-up roller 51a toward the first mold 10 is provided. As the feed roller 51c is rotated, the skin wound around the take-up roller 51a is supplied toward the first mold 10.

A heater 52a is built in the preheating device 52 at a portion through which the skin material 1 passes, thereby heating the skin material 1 passing through the preheating device 52. And individual temperature control is possible through a controller, and a cutting device 54 for cutting the skin 1 is installed at the end of the guide plate 51b. The cutting device 54 is operated to cut the lower skin 1 in a state where the skin 1 supplied to the first mold 10 is stably vacuumed.

In addition, the sealing device 53 has a box shape opened downward to seal the upper space of the skin material 1 while keeping the skin material 1 in close contact with the first mold 10 through the lower end of each side wall. The portion of the cap 53a and the skin member 1 in close contact with the first mold 10 is pushed into the first molding space forming portion 11 by pressing a portion corresponding to the first molding space forming portion 11. It is configured to include a pressing member 53b mounted inside the sealing cap 53a.

Here, the pressing member 53b is formed so that the shape of the lower surface corresponds to the bottom shape of the first molding space forming part 11 and is located inside the sealing cap 53a, and the sealing cap 53a is the skin material ( 1) After contacting the closed cap (53a) is projected to the lower portion is provided to press the skin (1) (see Figure 4c), for this purpose the closed cap (53a) is the upper upper body (53a-1) And, between the lower lower body (53a-2) is provided so that the upper end is slidably inserted into the lower end of the upper body (53a-1), between the lower end of the upper body (53a-1) and the upper end of the lower body (53a-2) It is provided with an elastic member (53a-3) interposed in the stretchable in the vertical direction.

In addition, the pressing member 53b supplies heated skin to the skin material 1 preheated instead of directly pressing the skin material 1 to supply the skin material 1 to the first molding space forming part 11. It may be provided to be connected to an external hot air fan (not shown) so as to be pushed inward. In this case, the preheating temperature is increased by hot air instead of depriving heat in the process of the skin 1 directly contacting the pressing member 53b. Vacuum adsorption proceeds to the first mold 10 in a maintained state, so that a more precise vacuum forming process can be performed.

In the state where the skin material 1 is pressed by the pressing member 53b as described above, between the sealing cap 53a and the first mold 10 through the minute air hole 12 formed in the first mold 10. Air is suddenly dropped to the outside, the skin material (1) is maintained in the vacuum suction to the first mold 10 while being in close contact with the first molding space forming part 11 by the suction force generated at this time (Fig. 4d), the cutting device 54 breaks the skin 1 in this state so that the first mold 10 can move to the second position 40b for the in-mold process (see FIG. 4E). . For reference, each of the air balls 12 is connected to a vacuum absorber (not shown), and when the vacuum adsorption process of the skin material 1 is completed, the sealing cap 53a is raised upward (see FIG. 4F). .

In the first position or the third position 40a or 40c, while the vacuum molding process is performed on the skin 1 in this manner, the second position 40b performs the in-molding operation by the injection unit 60. This is done.

The injection unit 60 is provided with a clamping device 61 for lifting and lowering the second mold 20 positioned above the second position 40b, and the clamping device 61 is provided to be operated by hydraulic pressure. Can be. Therefore, in the first position 40a or the third position 40c, the first mold 10 which maintains the state in which the skin material 1 is vacuum-adsorbed is moved to the second position according to the driving of the transfer unit 40. When positioned at 40b, the second mold 20 is lowered downward to engage with the first mold 10 to be shaped and vacuumed to form the back surface of the skin 10 and the second molding space of the second mold 20. The forming space 30 is formed between the forming portions 21.

Here, a base 20A for installing the second mold 20 is provided on the second mold 20, and the mold clamping device 61 is connected to the base 20A, and the base 20A is The airtight cap 53a is coupled to each other through a sealing cap 53a and a connecting frame 61a of the vacuum adsorption unit 50 provided at the first and third positions 40a and 40c, respectively. It is possible to move up and down together with the second mold 20 when the mold clamping device 61 is driven without being provided.

And the injection unit 60 is for supplying the molten resin (2A) to the injection flow path 22 of the second mold 20 lowered to be engaged with the first mold 10, the injection flow path 22 It is provided with an ultra-fine foam molding injection stand 62 is installed to be retractable toward the entrance of. The injection passage 22 seals the injection passage 22 inlet by receiving an electrical signal so that a pressure drop does not occur in the molten resin 2A remaining in the second mold 20 when the injection stage 62 is separated. Valve valves may be installed.

The injection bed 62 is bonded to the inlet of the injection passage 22 in a state in which the first mold 10 and the second mold 20 are formed to form a molding space 30, and thus the injection passage 22 is formed. Inject the molten resin (2A) to the injection (see Fig. 6c), and the injection stage 62 of the injection flow path 22 before the second mold 20 is raised to the top after injection It is detached from the inlet (see Fig. 6d). Although not shown through the drawing, of course, a hopper structure for resin injection and an injection cylinder for operation of the injection stand may be provided at the rear of the injection stand 62.

In addition, in the first mold 10 and the second mold 20, the outer skin 1 of the outer space of the molding space 30 is formed on the lower surface of the second mold 20 around the second molding space formed part 21. Cutting blades 23 for cutting the mold 23 are integrally provided with the second mold 20, and the first mold 10 and the first mold 10 are formed on the upper surface of the first mold 10 around the first molding space forming part 11. In the state in which the two molds 20 are engaged with each other, a blade receiving groove 13 for accommodating the cutting blade 23 is formed.

The cutting blades 23 and the blade receiving grooves 13 may be formed in the skin 1, leaving only as much of the edges 1a as necessary for the wrapping process, which will be described later. In order to easily remove the cut, the cut material 1 may be simultaneously cut in the mold process of the first mold 10 and the second mold 20.

The procedure of continuously performing the skin forming material (1) vacuum molding process and the in-mold injection injection process through the injection processing plant prepared as described above is as follows.

First, assuming that the pair of first molds 10 are located at the first position 40a and the second position 40b, respectively, by the operation of the transfer unit 40, the first position 40a. On the first mold (10) located in the) the skin material 1 is supplied by the vacuum suction unit 50 through the vacuum suction unit 50 toward the first position (40a) is carried out a vacuum suction, the second position (40b) In the second mold 20 is formed on the first mold 10 in which the skin material 1 is vacuum-adsorbed at the third position 40c through the injection unit 60, and the molding space 30 formed at this time. In-mold injection work is performed in which the molten resin 2A is injected into. At this time, in the vacuum suction unit 50 toward the third position 40c from which the first mold 10 is pulled out, the supply roller 51c is stopped so that the supply operation of the skin material 1 is not performed.

Then, the vacuum suction operation of the skin material 1 on the first mold 10 toward the first position 40a is completed, and the first mold 10 and the second mold 20 toward the second position 40b are completed. When the injection of the molten resin 2A is completed in between, after the cooling time of a predetermined time has elapsed, the second mold 20 rises upward through the driving of the elevating device 61, and in this case, the second mold 20 and the sealing cap 53a of each vacuum suction unit 50 connected through the connecting frame 61a are also raised. In this case, the skin material 1 and the base material 2 integrally laminated parts molded in the molding space 30 are attached to the second mold 20 and released, and the ejecting structure 24 mounted to the second mold 20. Is taken out (see FIG. 6E).

In this state, the transfer unit 40 transfers the fixed plate 42 to the opposite side so that the first mold 10 toward the first position 40a where the skin 1 is vacuum-adsorbed is ejected to the next in-mold. The mold is transferred to the second position 40b for the process, and the first mold 10 toward the empty second position 40b is transferred to the third position 40c for the next vacuum forming process. . Then, the in-mold injection operation by the injection unit 60 is performed again at the second position 40b, and the skin material by the vacuum suction unit 50 at the third position 40c at the third position 40c. (1) Vacuum adsorption is carried out and this process is repeated throughout.

Therefore, according to the injection processing apparatus according to the present embodiment, the first position (40a) and the third position (40c) in the first mold 10, the work to vacuum the skin material (1) alternately is made At the same time, since the injection operation for injecting the molten resin 2A into the molding space 30 can be continuously performed in the second position 40b, not only the defective factor of the laminating part can be removed but also compared with the existing method. The productivity of the machining process can be greatly improved.

On the other hand, the skin material 1 and the base material 2 integral laminating parts taken out from the molding space 30 are based on the outer edges 1a of the skin material 1 cut off the cutting edge 23 ( 2) It is subjected to a finishing process of wrapping and attaching to the inner surface, the in-mold injection apparatus according to the present invention further includes a finishing device 70 for performing such a finishing process in addition to the injection processing device, the finishing device 70 is The bag 1a is provided to be thermally fused to the inner surface of the base 2.

7 shows the structure of such a finishing device 70.

As shown in FIG. 7, the finishing apparatus 70 is first provided with a receiving jig 71 for receiving the skin 1 and the substrate 2 integral laminating parts such that the inner surface of the substrate 2 faces upward. do. The upper surface of the receiving jig 71 is formed with a receiving groove 71a corresponding to the shape of the base material 2 and opened upward. The receiving groove 71a has a somewhat deeper depth to accommodate the receiving groove 71a. It is preferable that the stalk 1a is provided on the side while the stalk 1a faces upward.

And the finishing device 70 is provided with a work table 72 is provided to put the receiving jig 71, the work table 72 is a cut of the skin material (1) of the laminating components accommodated in the receiving jig 71 A wrapping device 73 provided to wrap and press (1a) toward the inner surface of the base material 2 in a single step is installed.

Wrapping device (73) is provided with a hook-type pressing portion (74a) to correspond to the outer inner surface shape of the base material (2) fixed jig 74 is installed to be fixed to one side of the work table 72, and the work Lifting table to raise and lower the receiving jig 71 in a vertical direction while forming a part of the table 72 so that the rim 1a is pressed by the pressing portion 74a to be supported on the inner surface of the substrate 2 during the lifting operation. (75). Here, the work table 72 may be formed with a guide rail for guiding the receiving jig to the lifting table (75).

Pneumatic cylinder (75a) for the lifting operation of the lifting table 75 is installed in the lower portion of the lifting table 75, the pneumatic cylinder (75a) is connected to the adjustment step 75b which is operated in a stepping manner. Therefore, the lifting platform 75 is raised when the worker steps on the adjustable footrest 75b and lowered again when the foot is lifted off the footrest 75b, and on one side of the fixing jig 74, a pivot table for heat fusion. ) Is installed to be rotatable.

The thermal welding electrode 76a is provided with a thermal fusion electrode 76a and a handle 76b, and when the worker grasps the handle 76b and rotates the rotation table 76, the thermal fusion electrode 76a is a housing jig 71. The contact surface 1a in close contact with the inner surface of the inner substrate 2 is allowed to reach. The plurality of thermal fusion electrodes 76a are formed to be spaced apart by a predetermined interval along the curvature of the outer rear surface of the substrate 2, and the pressing portions 74a have a plurality of passage holes for passing the respective thermal fusion electrodes 76a. 74a-1 is formed.

The finishing device 70 should be provided as the number of each side of the laminating parts that need to wrap finishing work, and the operator removes the laminating parts of the heat-sealing wrapping for one side from the receiving jig 71 to the other sides The method of working while moving the parts themselves to the receiving jig installed in the second, third, fourth finishing device for the wrapping operation for the wrapping and laminating parts without removing the receiving jig (71) There may be a way of working while sliding itself to the second, third, fourth finishing device.

When installing a plurality of finishing devices 70 can be installed in the vicinity of the injection device by a reference to minimize the space of the workplace and the maneuvering range of workers and the finishing process for each surface will be described with reference to FIG. .

First, as shown in FIG. 8A, the operator pushes the receiving jig 71 located at one side of the worktable 72 toward the lifting platform 75 while the skin 1 and the base 2 are integrally laminated. It is located under the pressing portion 74a of the jig 74. At this time, the cutout (1a) of the skin material (1) facing the upper side in the state accommodated in the receiving jig 71 is pushed to the side of the pressing portion (74a) to lie inside the receiving groove (71a), in this state As shown in FIG. 8B, the elevator platform 75 is lifted by stepping on the adjustable footrest 75b so that the ridge 1a is pressed under the pressing portion 74a to contact the inner surface of the substrate 2. Thereafter, as shown in FIG. 8C, the worker grasps the handle 76b and rotates the pivot table 76 so that the thermal fusion electrode 76a is pressed against the pressing portion 74a to contact the inner surface of the substrate 2. 1a) When one side is touched and a current is applied to the thermal fusion electrode 76a in this state, the edges 1a are adhered while being thermally fused to the inner surface of the substrate 2.

Then, in a state in which a part of the edge 1a is thermally fused in this manner and attached to the inner surface of the substrate 2, the rotating table 76 and the lifting table 75 are replaced, and then laminating parts are removed from the receiving jig 71. Next, it moves to the finishing device and attaches the other side rim 1a of the laminating part to the inner surface of the base 2 in the same manner.

Therefore, according to this finishing process, the work of attaching the cuticle (1) bag (1a) to the inner surface of the substrate (2) can be performed almost automatically quickly to further increase the production speed of the product.

As described in detail above, according to the in-mold injection apparatus according to the present invention, unlike the conventional methods that the skin material molding and the in-mold molding is performed simultaneously with one first mold and the second mold, respectively 1) In-mold injection process The quality of the laminating in-mold parts can be greatly improved by directly passing the in-mold injection process while maintaining the skin-formed skin in the first mold after the vacuum forming and cooling of the skin (1) before. 2) The first mold, which was waiting in the state where the skin forming was finished in the first or the third position while the ejecting ejection was carried out after the in-mold molding was finished in the second position and the ejecting ejection proceeded, was finished. Existing method whereby skin material is put in and attached to the second mold after ejection ejection of the integral laminating parts is finished Compared to the injection process, the waiting time is reduced, and the production speed in the finishing process, which has been performed separately through the automatic cutting of the skin material, is greatly improved, thereby enabling the cost reduction of the skin material integrated substrate.

In addition, in the present invention, the configuration of the finishing device for attaching the cuticle material to the inner surface of the substrate through heat fusion allows the finishing process to be carried out without the use of adhesives harmful to the human body, thereby the work environment of the integral laminating parts This is a significant improvement, and as this finishing process is performed almost automatically and quickly, the production speed of the product can be further improved.

Claims (10)

For in-mold injection of the skin material and the substrate integral laminating parts, And a pair of first molds are transferred from the first and second positions to the second and third positions, respectively, and then the first and second positions are sequentially arranged. A transfer unit provided to repeatedly perform a transfer operation to a position; A pair of vacuum adsorption units respectively provided around the first and third positions to supply and vacuum the skin material on the first mold transferred to the first and third positions; The second mold and the back surface of the skin material vacuum-absorbed in the first mold by engaging the second mold with the first mold transferred to the second position while the skin material is vacuum-adsorbed in the first or third position. And an injection unit provided around the second position to inject the molten resin into the molding space formed therebetween so as to inject the substrate having the skin material integrally formed therein. The first mold is formed with an air hole for vacuum adsorption of the skin material, the vacuum adsorption unit is a skin material supply device for supplying the skin material toward the first mold and the skin material waiting to be supplied to the first mold And a preheating device for heating and a sealing device provided to be able to lift and lower the upper portion of the first mold to cover and seal the upper surface of the skin material. A first molding space forming part and a second molding space forming part are formed on the mutually opposing surfaces of the first mold and the second mold to form the molding space in a state where the first mold and the second mold are engaged with each other. The sealing device includes a sealing cap provided to press and fix the skin material outside the first molding space forming part and to seal the upper space of the skin material, and a skin material fixed by the sealing cap while being located inside the sealing cap. And a pressing member provided to press a portion corresponding to the first molding space forming unit to the inside of the first molding space forming unit. delete delete The method of claim 1, While the first mold of one of the first molds performs the vacuum molding on the skin material preheated at the first or third position, it is moved to the second position while maintaining the skin material which has been vacuum-formed in the previous stroke as it is. The moved first first mold is engaged with the second mold to simultaneously perform in-mold molding so that the vacuum molding process and the in-mold process are performed independently of each other. After a certain cooling time has elapsed, the second mold is separated from the first mold and the integrated in-mold parts are suspended and opened, and the first mold, which is empty of the first molding space forming part, immediately performs the next skin material vacuum forming process. In order to move to the third or first position, and at the same time another first mold having completed the vacuum of the skin material at the first or the third position to move to the second position for the next in-mold molding. In-mold injection apparatus characterized in that the drawing process is provided to be performed continuously. The method of claim 1, The second mold has an injection passage formed to communicate with the molding space to inject molten resin into the molding space, and is provided to be capable of lifting up and down at the second position. And an injection unit comprising an injection table removably installed toward the inlet of the injection passage to supply the molten resin to the injection passage of the second mold lowered to engage the first mold. The method of claim 5, On the mutually opposite surfaces of the first mold and the second mold, a first molding space forming portion and a second molding space forming portion are formed to form the molding space in a state where the first mold and the second mold are engaged with each other. The second mold around the second molding space forming part is provided with a cutting blade for cutting the skin material outside the molding space, and the first mold around the first molding space forming part accommodates the cutting blade. In-mold injection apparatus characterized in that the blade receiving groove is provided for. For in-mold injection of the skin material and the substrate integral laminating parts, And a pair of first molds are transferred from the first and second positions to the second and third positions, respectively, and then the first and second positions are sequentially arranged. A transfer unit provided to repeatedly perform a transfer operation to a position; A pair of vacuum adsorption units respectively provided around the first and third positions to supply and vacuum the skin material on the first mold transferred to the first and third positions; The second mold and the back surface of the skin material vacuum-absorbed in the first mold by engaging the second mold with the first mold transferred to the second position while the skin material is vacuum-adsorbed in the first or third position. And an injection unit provided around the second position to inject the molten resin into the molding space formed therebetween so as to inject the substrate having the skin material integrally formed therein. The injection unit includes a clamping device for lifting and lowering the second mold, and the sealing device is connected to a connection frame extending from the clamping device to lift and lower together with the second mold. The pressing member pushes the skin material of the portion corresponding to the first molding space forming part into the first molding space forming part in a state where the outer skin material of the first molding space forming part is pressed and fixed through the sealing cap. In-mold injection apparatus characterized in that it is provided to be put. The method of claim 1, And a finishing apparatus for wrapping and attaching the outer edge of the skin material to the back surface of the laminating part taken out in the state of integrally injecting the skin material between the first mold and the second mold. The finishing device is an in-mold injection device, characterized in that provided to heat-sealed the sash on the back of the substrate. For in-mold injection of the skin material and the substrate integral laminating parts, And a pair of first molds are transferred from the first and second positions to the second and third positions, respectively, and then the first and second positions are sequentially arranged. A transfer unit provided to repeatedly perform a transfer operation to a position; A pair of vacuum adsorption units respectively provided around the first and third positions to supply and vacuum the skin material on the first mold transferred to the first and third positions; The second mold and the back surface of the skin material vacuum-absorbed in the first mold by engaging the second mold with the first mold transferred to the second position while the skin material is vacuum-adsorbed in the first or third position. And an injection unit provided around the second position to inject the molten resin into the molding space formed therebetween so as to inject the substrate having the skin material integrally formed therein. And a finishing device for wrapping and attaching the outer edge of the skin material to the back surface of the laminating part taken out in the state of integrally injecting the skin material between the first mold and the second mold, and the finishing device It is provided to heat-bond to the back of the substrate, The finishing device includes a receiving jig for receiving the laminating part such that the back side of the substrate faces upwards, a wrapping device for winding the outer surface of the laminating part accommodated in the receiving jig toward the back of the base material, and the back of the base material. In-mold injection apparatus comprising a heat welding electrode rotatably installed toward. The method of claim 9, The wrapping device is provided with a hook-like pressing portion fixed to the fixing jig, and is supported by the receiving jig to be raised and lowered to the lower portion of the pressing portion when the lifting edge is pressed to the pressing portion to the back surface of the substrate In-mold injection apparatus comprising a lifting platform to dry.

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