Cutting device for automatic double injection unit

Abstract

The present invention relates to a cutting device used in a double injection molding machine capable of automatically double injection of an inside handle, wherein a front support and a side support are configured to support the secondary molded product in order to cut a gate generated in the secondary molded product, and the front support is configured with a pressing part that presses a part of the interior of the secondary molded product, and the cutting member configured with the cutting part is configured to slide left and right through a guide rail so that cutting can be performed.

Description

Technology Field

[0001] The present invention relates to a cutting device, and more specifically, to a cutting device used in a double injection molding device capable of automatically double injection molding of an inside handle. Background Technology

[0003] First, if we look at the prior art,

[0004] Generally, an injection molding machine is a device that mounts an upper mold and a lower mold onto a clamping device to align them, thereby forming a cavity identical to the shape of the product to be molded, and then injects molten resin into this cavity under high pressure to mold the product.

[0006] In addition, dual injection molding is a method of injecting two materials (or resins of different colors) into a single part. It involves installing two sets of molds as a single unit in the clamping device of an injection molding machine, first injecting a primary molded product through the primary mold, and then manually rotating the mold 180 degrees to allow for secondary molding, thereby injecting a secondary resin into the cavity of the secondary mold and the space of the primary molded product.

[0007] This conventional double injection molding is applied in various ways to electronic products, household goods, mobile phones, etc. In particular, for the outer case of electronic products such as mobile phones, a transparent synthetic resin (or transparent colored resin) is first injection molded to emit light from a light-emitting part installed inside the device to the outside, and then an opaque inner resin is secondarily injection molded inside the first injection resin, thereby allowing for a variety of functions and designs of the outer case.

[0009] However, in the conventional dual injection molding method, one material is first injected and then manually moved to a new mold (secondary mold) to inject the remaining material; as a result, the work process is not only complex but also has limitations in increasing productivity.

[0011] Meanwhile, a printed layer is integrally formed on the surface of a multi-injection molded product by pre-inserting a film with the printed layer inside the mold; however, even in this case, the film with the printed layer must be inserted manually one by one, and finishing work is required to remove the edges of the film exposed to the outside after product molding, which significantly reduces work efficiency.

[0013] In addition, the injection mold configuration becomes complex because a film fixing guide configuration for insert-fixing a film with a printed layer must be added to the mold. Furthermore, since the conventional printed layer is provided on the surface of a multi-injection molded product, it has the disadvantage that it can be easily erased by scratches or other factors during product use, even if UV coating is applied.

[0015] Accordingly, prior art, the following have been disclosed: the ‘turntable type double injection mold and an automobile lamp lens manufactured using the same and a method for manufacturing the same’ of Patent No. 10-1249701; the ‘resin composition for manufacturing an inside door handle with a skin-core structure, a method for manufacturing an inside door handle using the same and a molded article thereof’ of Patent No. 10-1766155; the ‘double injection molding system capable of automatically producing four molded articles for a vehicle’ of Patent No. 10-2075580; the ‘injection molding machine capable of automatically producing double molded articles’ of Publication No. 10-2022-0039187; and the ‘double injection mold for an inside handle for a vehicle having a stable mounting structure for a first injection molded article and an insert method and the inside handle thereof’ of Patent No. 10-2382782. However, the aforementioned problems are still not being improved. The problem to be solved

[0017] The present invention was devised to solve the problems of the aforementioned prior art, and focuses on providing a cutting device for an automatic double injection molding machine by configuring a front support and a side support to support the secondary molded product in order to cut the gate generated in the secondary molded product, configuring a pressing part in the front support to press a part of the interior of the secondary molded product, and enabling cutting to be performed by sliding left and right through a guide rail with a cutting part configured therein. means of solving the problem

[0019] Accordingly, the present invention provides a cutting device for a double injection molding machine for double injection molding of an automobile's inside handle, wherein the cutting device comprises a seating portion on which a secondary molded product is seated, a front support member that operates back and forth using a cylinder to the seating portion and supports by inserting and pressing a pressing portion into the internal space of the secondary molded product, a fixed core equipped with a cutting blade for cutting the gate of the secondary molded product, and a cutting member comprising an operating core having an inclined surface that contacts the other side of the cutting blade and pushes the cutting blade. Effects of the invention

[0021] According to the cutting device for an automatic double injection molding machine of the present invention, the supporting force for the secondary molded product is increased due to the pressing part configured on the front support, and the space utilization is increased by operating the guide rail configured on the cutting member to the left and right, and so on. Brief explanation of the drawing

[0023] FIG. 1 is a perspective view showing a cutting device according to the present invention. FIG. 2 is a plan view showing FIG. 1. FIG. 3 is a perspective view showing the seating portion and the front support member among the components of the present invention. FIG. 4 is a perspective view showing the seating portion, front support, and fixing core among the components of the present invention. FIG. 5 is a plan view showing a cutting member among the components of the present invention. Specific details for implementing the invention

[0024] Hereinafter, the preferred configuration and operation of the present invention for achieving the above objective in relation to the attached drawings will be explained with reference to FIG. 5 as follows.

[0026] First of all, the cutting device (10) for the automatic double injection molding device of the present invention is,

[0027] In a cutting device for a double injection molding device for double injection molding of an inside handle of a car, the cutting device (10) is configured with a seating portion (100) on which a secondary molded product is seated, a front support member (200) that operates back and forth using a cylinder to the seating portion (100) and supports by inserting and pressing a pressing portion (220) into the internal space of the secondary molded product, a fixed core (300) equipped with a cutting blade (310) that cuts the gate of the secondary molded product, and a cutting member (400) composed of an operating core (410) having an inclined surface (411) that contacts the other side of the cutting blade (310) and pushes the cutting blade (310).

[0029] To explain the present invention described above in more detail,

[0031] First, the cutting device (10) of the present invention is used in a double injection molding device that double-injects the inside handle of a car.

[0033] The above cutting device (10) is composed of a seating portion (100), a front support (200), a fixed core (300), and a cutting member (400).

[0035] The settling portion (100) is where the secondary molded product is placed.

[0036] The above-mentioned mounting portion (100) is composed of a front mounting portion (110) on which the front surface of the secondary molded product is mounted, and a locking portion (120) on which the rear surface of the secondary molded product is locked.

[0038] The above front seating portion (110) is formed like a 'V' groove, and the lower front portion of the secondary molded product is seated in the 'V' groove.

[0039] The above-mentioned catch portion (120) catches the rear surface of the secondary molded product and has one side formed in a round shape.

[0041] The front support (200) operates back and forth using a cylinder with the above-mentioned seating part (100) and supports the pressing part (220) by inserting and pressing it into the internal space of the secondary molded product.

[0042] The above-mentioned pressing part (220) is formed in the same shape as the internal space formed in the secondary molded product, and the lower part is formed to protrude downward by a certain size.

[0043] The above-mentioned protruding lower portion is inserted into the internal space of the secondary molded product and simultaneously presses the secondary molded product.

[0045] The fixed core (300) is equipped with a cutting blade (310) that cuts the gate of the secondary molded product.

[0046] The above fixed core (300) has a through groove (320) through which a cutting blade (310) passes.

[0048] The cutting member (400) is composed of an operating core (410) having an inclined surface (411) that contacts the other side of the cutting blade (310) and pushes the cutting blade (310).

[0050] To explain the operation of the above configuration,

[0051] When the operating core (410) of the above cutting member (400) is operated by the operation of the cylinder, the inclined surface (411) formed on the operating core (410) pushes the other side of the cutting blade (310), and the pushed cutting blade (310) passes through the through groove (320) of the fixed core (300), and the blade portion of the cutting blade (310) configured on one side of the cutting blade (310) cuts the gate.

[0053] According to the present invention as described above, the supporting force for the secondary molded product is increased due to the pressing part configured on the front support, and the space utilization is increased by operating the guide rail configured on the cutting member to the left and right. Explanation of the symbols

[0055] 10: Cutting device 100 : Seating part 110 : Front seating part 120 : Catching part 200 : Front support 220 : Pressing part 300 : Fixed core 310 : Cutting blade 320 : Through groove 400 : Cutting member 410 : Actuating core 411 : Inclined surface

Claims

Claim 1 A cutting member (400) is configured comprising a seating portion (100) on which a secondary molded product, which is double-injection-molded inside handle of a car, is seated; a front support member (200) that operates back and forth using a cylinder on the seating portion (100) and supports by inserting and pressing a pressing portion (220) into the internal space of the secondary molded product; a fixed core (300) equipped with a cutting blade (310) for cutting the gate of the secondary molded product; and an operating core (410) having an inclined surface (411) that contacts the other side of the cutting blade (310) and pushes the cutting blade (310). The seating portion (100) is configured with a front seating portion (110) on which the front of the secondary molded product is seated and a locking portion (120) on which the rear of the secondary molded product is caught, and the fixed core (300) A cutting device for a double injection molding machine having a through groove (320) through which a cutting blade (310) passes, wherein the front seating portion (110) is formed as a 'V' groove, the catch portion (120) is formed with one side having a round shape so as to catch the rear surface of the secondary molded product, and the pressing portion (220) is formed with the same shape as the internal space formed in the secondary molded product and the lower portion is formed to protrude downward by a certain size, so that the protruding lower portion is inserted into the internal space of the secondary molded product and simultaneously presses the secondary molded product. Claim 2 delete Claim 3 delete

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