TWI772175B - Injection molding machine - Google Patents

Abstract

An injection molding machine is characterized in that a molding device includes a lifting holding unit, a moving unit, a first lower die, a second lower die, and at least one upper die, so that the moving unit carries out an action of the upper die to cover on the first or the second lower dies. A pressing device is adapted to execute a pressing operation and an injection device is adapted to execute an injection operation, so that a finished product with two colors can be produced while the upper die moves between the first and the second lower dies respectively. Another upper die can be adapted, so that two upper dies are adapted to respectively work with the first and the second lower dies to thereby produce products by two sets of dies simultaneously and improve the productivity.

Description

Injection Molding Machine with Dual Modules and Dual Shots

The present invention relates to the design of an injection molding machine, in particular to an injection molding machine with dual modules and dual injection materials.

Check, the current injection products are for various color changes, not just a single color, so it is further to use the combination of two different materials or different colors. To achieve a perfect combination between materials or different colors, in the process, after the first injection of the mold is completed, the finished shape of the first material will be obtained, and then the mold will be opened, and then the mold to be formed will be Another form of model is placed in the above-mentioned mold of the semi-finished product. After the mold is closed, the second injection of different materials is carried out, so that the second injection is combined with the semi-finished product to obtain a specific finished product. However, after using it, it was found that this multi-process injection molding production method must be effectively completed through the use of different tools, and in view of the additional placement of the second injection model, so the placement During the process, there will be defects such as positional deviation. At the same time, the injection time of the second combination must depend on the cooling time after the first injection, and this operation method will cause poor combination. , In addition to the poor yield of finished products, it will lead to complex and labor-intensive operation process, which needs to be improved.

Therefore, the purpose of the present invention is to provide an injection molding machine with dual modules and dual injections, which can effectively increase productivity and save working time and other benefits.

Therefore, the injection molding machine with dual molds and dual injections of the present invention includes a main body, a dual mold device, a compression mold device, and an injection device; wherein, the dual mold device has a lifting bracket disposed on the main body, and a The moving part on the lifting bracket, two first lower molds and second lower molds arranged at intervals under the lifting bracket, and an upper mold corresponding to the position of the first lower mold or the second lower mold, And when the upper mold can be moved by the moving member to make the upper mold clamped on the first or second lower mold, it can be pressed by the compression molding device to produce close contact with the clamping place, and the aforementioned The first lower mold and the second lower mold respectively form a feeding channel on one side opposite to the injection device, and cooperate with the injection device to form a double injection state. Therefore, the design of the dual mold device enables the The upper mold can be firstly covered on the first lower mold under the driving and linkage of the moving piece and the lifting bracket, and is further subjected to the pressure during the mold clamping process of the first lower mold and the upper mold. After the pressing switch of the first die of the mold device and the injection of the first discharge seat of the injection device, the first die will stop the pressing switch of the upper die, and then the lift bracket will drive the upper die. The mold and the first lower mold are in the form of short-opening separation, and the upper mold and the first-shot finished product attached to the upper mold are continuously moved by the moving piece, so that the upper mold and the second lower mold are moved. The mold is closed at the mold, and the press button of the second die and the injection material of the second discharge seat are accepted, and another upper mold can be added in time to achieve the double-die double-out molding operation. , so that the injection molding of single-mode and two-color coated products can be completed in almost no time difference in the injection molding process, which effectively saves operation time and improves productivity.

The foregoing and other technical contents, features and effects of the present invention will be clearly understood in the following detailed description of the preferred embodiments with reference to the drawings.

Referring to FIG. 1 , in the first preferred embodiment of the present invention, an injection molding machine 3 (shown as a schematic diagram in the figure) with dual modules and dual injections includes a main body 31 , and at least a plurality of them are disposed on the main body 31 The double-die device 32, a press-molding device 33 corresponding to the double-die device 32, and an injection device 34 provided on the side of the press-molding device 33; wherein, in this embodiment, the main body 31 is a rotating The main body 31, which is arranged in the form of a rotating piece, can be provided with a plurality of the dual-mould devices 32 at intervals, so that the main body 31 can move one of the dual-mould devices 32 to the pressing-mould device 33 for lid cooperation. Industry.

Continuing from the above, each dual-mode device 32 has a lift bracket 321 disposed on the main body 31 , a moving member 322 disposed on the lift bracket 321 , and two first and lower brackets 321 and spaced apart. , the second lower molds 323, 324, and an upper mold 325 corresponding to the first lower mold 323 or the second lower mold 324, and the aforementioned moving member 322 can move up and down on the lifting bracket 321, and the upper mold The mold 325 can be moved by the moving member 322, so that the upper mold 325 is located above the first and second molds 323, 324, and a molding cavity a is formed on the first and second lower molds 323, 324 respectively, and at the same time The first lower mold 323 and the second lower mold 324 respectively form a feeding channel b on one side of the first lower mold 323 and the second lower mold 324 opposite to the injection device 34, which is connected to the molding cavity a. The first and second lower molds 323, 324 The setting pattern of the forming hole a can be customized and adjusted according to the different forming requirements, which will not be described in detail below.

Continuing from the above, the die device 33 has first and second die 331, 332 corresponding to the first and second lower die 323, 324, respectively, and the first die 331 can move on the upper die 325 When facing the first lower mold 323, the first pressing mold 331 presses the upper mold 325 in a heavy pressure manner, so that the upper mold 325 is indeed covered on the first lower mold 323 and produces The close-fitting mold clamping form, or when the upper mold 325 is acted by the moving member 322 to move to the top of the second lower mold 324 to face and descend to cover, the second mold 332 will also be pressed in a heavy manner. The upper mold 325 is pressed, so that the upper mold 325 is firmly covered on the second lower mold 324 to form a close-fitting mold closing shape. The force of the switch can be adjusted and corrected according to the molding state of the injection operation; in addition, the injection device 34 has a base 341, and two first parts disposed on the base 341 and corresponding to the feeding channels b respectively. The discharge seat 342 and the second discharge seat 343 are filled with injection material, and the first and second discharge seats 342 and 343 can be placed in the seat body. 341 is lifted up, down, and longitudinally reciprocated, so as to properly adjust the height position of the dual-die device 32 on the main body 31, and at the same time fill the first and second discharge seats 342, 343 The injection material can be different according to the needs of the finished product to be injection molded. Each device has injection materials of different materials (not shown in the figure), or injection materials of different colors.

Referring to FIG. 1 , when performing operations, first properly adjust the distances and heights of the first and second discharge seats 342 and 343 relative to the feeding channels b of the first and second lower molds 323 and 324 , and adjust the distance and height accordingly. After the injection materials with different properties to be injection-molded are filled in the first and second discharge seats 342 and 343 respectively, the driving source (not shown in the figure) is activated to link the main body 31 to rotate. Therefore, in this Driven by the rotation of the main body 31 , each of the dual mold devices 32 on the main body 31 will rotate to the position below the pressing mold device 33 in sequence with the rotation of the main body 31 , and correspond to the injection device 34 . , in order to carry out the injection molding operation; therefore, when the dual mold device 32 is moved to be positioned below the press mold device 33, the first and second lower molds 323 and 324 will be connected with the first and second molds 331. 332 are opposite, and the upper mold 325 is pushed by the moving member 322 to be located between the first lower mold 323 and the first pressing mold 331, and the upper mold 325 and the first lower mold 323 are opposite. When the moving member 322 is actuated on the lifting bracket 321 to drive the upper mold 325 to cover the first lower mold 323, the molding cavity a on the first lower mold 323 is blocked by the upper mold 325 and the first lower mold 323, at this time, the first pressing mold 331 will move downward under driving, so as to gravitationally press the upper mold 325, so that the upper mold and the first lower mold 323 Form a tight fit, that is, as shown in the simplified diagram of FIG. 2 , at the same time, the first discharge seat 342 will move on the seat body 341 in the direction of the feeding channel b in a longitudinal movement manner until it is close to the first discharge seat 342. After the lower mold 323 and the upper mold 325 are closed, the first molding material contained in the mold will be injected through the feeding channel b for injection, so that the injection material is injected and then filled in the mold. After the molding cavity a, the first discharge seat 342 will stop the injection of the injection material, and move away from the feeding channel b, whereby the first discharge seat 341 completes the first injection. injection process.

Continuing from the above, after the first discharge seat 342 is moved and withdrawn, the first die 331 will also move out of the way and will no longer be pressed on the upper die 325 , and the moving member 322 will be on the lift bracket 321 . The upper mold 325 is driven to move upwardly under the action of the upper mold 325, so that the upper mold 325 and the first lower mold 323 form a short mold opening shape. At the second lower mold 324, driven by the lifting bracket 321, it descends to form a covering state with the second lower mold 324, and the first injection molded in the first lower mold 323 as described above, Then, the upper mold 325 and the first lower mold 323 are instantly cooled to form a single-color semi-finished product (not shown in the figure). At the same time, the single-color semi-finished product is opened on the upper mold 325. It will be attached to the upper mold 325 after a while, and will be placed in the molding cavity a of the second lower mold 324 covered with the movement and descent of the upper mold 325, as shown in the simplified diagram in FIG. 3 . At the same time, the second discharge seat 343 corresponding to the second lower mold 325 will move to the direction of the feeding channel b under the drive, and will be filled in the first feeding channel b after it is close to the feeding channel b. Two kinds of injection materials are injected through the feeding channel b. When the second type of injection materials are injected into the molding cavity a of the second lower mold 324, they will be filled in the molding cavity a and will be mixed with the molding cavity a. The single-color semi-finished products are combined, and after the second injection process is completed, the second discharge seat 343 stops the injection of the injection, and exits in a direction away from the feeding channel b. At the same time, the second die 332 is also converted from the fully pressed mode to the disengaged state, thereby completing the injection molding operation of the two-color single mold, and the main body 31 will rotate immediately after the injection molding operation is completed, so that the The double-mold device 32 that has completed the injection molding operation is driven away from the lower part of the die-pressing device 33 under the driving of rotation, and is molded on the second lower mold 324 by a material ejecting device (not shown in the figure). The coated finished product is withdrawn and taken out, and then the dual-mold device 32 can follow the rotation of the main body 31 to perform the next injection molding process; therefore, the overall injection molding process can be performed in a consistent manner, Therefore, it is not necessary to use different machines as conventionally known, or it is necessary to stop the operation and then insert an additional mold to effectively inject molding, and the finished product will still have the problem of lack of deviation after completion, that is, it can be done almost without At the same time of the time difference, the injection molding operation of the single-mode and two-color coated products is completed in the injection molding process. Therefore, the present invention has a dual-mode dual-injection molding mode, which can process and produce injection-molded products with good bonding properties. It can meet the practical application of fast and accurate combination of different materials, and effectively save working time and improve production efficiency.

Referring to FIG. 4 , the second preferred embodiment of the present invention still includes the components described in the previous embodiment; in this embodiment, in order to enable the dual-mold device 32 in one injection molding operation, the The molding has two single-color finished products. The dual-die device 32 is particularly provided with an upper die 325 above the first and second lower dies 323 and 324, and the upper dies 325 are simultaneously arranged on the moving part 322. and the upper molds 325 are respectively covered on the first and second lower molds 323 and 324, so as to meet different demands of injection molding products.

Therefore, when performing the dual-mold single-color injection molding operation, firstly fill the first and second discharge seats 342 and 343 with injection materials of the same color and material, and then the dual-mold device 32 can be placed on the main body 31 . Under the driving of the die, the upper dies 325 will be moved to the position below the die pressing device 33, and then the upper dies 325 will be lowered to the space between the first and second lower dies 323 and 324 under the linkage of the lifting bracket 321. The distance is close to the fitting form, and at the same time, the first die 331 will move downward under driving, so as to press the upper die 325 opposite to the first lower die 323, so that the upper die 325 is forced to be opposite to the opposite. The first lower mold 323 is tightly closed, as shown in the simplified diagram in FIG. 5 , and at the same time, the first feeding seat 342 on the seat body 341 will move in the direction of the feeding channel b until it is close to the feeding channel b. After the feeding channel b, the injection material filled in it is directly injected through the feeding channel b, so that the injection material is filled in the molding cavity a, and the first discharge seat 342 stops injection. operation, and move out and away from the feeding channel b, and at the same time, the first die 331 will also be converted from the fully pressed state to the state of being separated from the upper die 325, so that the upper die 325 is in the first die 325. When the stamping die 331 is released from the pressing switch, it is separated from the first lower mould 323 and presents a short-opening mode. The second lower mold 324 is placed on the upper mold 325 , so that the upper mold 325 and the second lower mold 324 are tightly covered, and the second feeding seat 343 is fed into the second lower mold 324 at the same time. The material channel b is moved closer, so that the injection material is injected into the molding cavity a of the second lower mold 324 through the feeding channel b, and after the injection material injection process is completed, the injection operation is stopped and synchronized. After exiting the movement in the range of the feeding channel b, the second die 324 will also be converted into a loose state and not pressed on the upper die 325 in a pressing mode, as shown in the simplified diagram in FIG. 6 , whereby, The body 31 can be rotated after the pressing device 33 is withdrawn from the pressing, so as to drive the finished product formed in the dual-mould device 32 to the ejection position for ejection, so that one molding operation can be performed. It can double the output of injection molding with single color and dual molds at the same time.

To sum up the above, the injection molding machine with dual molds and dual injections of the present invention has a lifting bracket, a moving part, a first and a second lower mold, and one and the first lower mold or the second lower mold through the dual mold device. The mold position corresponds to the design of the upper mold, so that the upper mold can be moved by the moving part and driven by the lifting bracket, so that the upper mold can be covered on the first or second lower mold, and the upper mold can pass through the compression mold. The device and the injection device respectively carry out the gravitational pressing of the first or second lower mold covered by the upper mold and the coordination of the injection material, so that the single mold can be completed in the injection injection process with almost no time difference. The injection molding operation of the two-color coated product can of course also meet the needs of different injection molded products. In addition, the first and second lower upper molds are respectively provided with the upper molds and are arranged in parallel with the moving part. In this way, the finished product with dual molds and single color can be presented in the injection molding operation, which can not only effectively improve the production capacity, but also greatly save the processing time of injection molding.

However, the above descriptions are only to illustrate the preferred embodiments of the present invention, and should not limit the scope of implementation of the present invention, that is, simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the description of the invention. , shall still fall within the scope covered by the patent of the present invention.

(this invention) 3: Injection molding machine 31: Body (rotating parts) 32: Dual mode device 33: Compression molding device 34: Injection device 321: Lifting bracket 322: Moving Parts 323: The first die 324: The second die 325: Upper die 331: The first die 332: Second die 341: Seat 342: The first discharge seat 343: The second discharge seat a: forming hole b: feed channel

FIG. 1 is a schematic diagram of a first preferred embodiment of the present invention. FIG. 2 and FIG. 3 are schematic diagrams of the operation of the partial components of the first preferred embodiment. FIG. 4 is a schematic diagram of a second preferred embodiment of the present invention. FIG. 5 and FIG. 6 are schematic diagrams of the operation of the partial components of the second preferred embodiment.

(this invention)

3: Injection molding machine

31: Body (rotating part)

32: Dual mode device

33: Compression molding device

34: Injection device

321: Lifting bracket

322: Moving Parts

323: The first die

324: The second die

325: Upper die

331: The first die

332: Second die

341: Seat

342: The first discharge seat

343: The second discharge seat

a: forming hole

b: feed channel

Claims (4)

An injection molding machine with dual molds and dual injections, comprising a main body, at least a dual mold device arranged on the main body, a press mold device corresponding to the dual mold device, and a press mold device provided on the press The injection device on the side of the mold device; wherein, each of the double mold devices has a lifting bracket set on the main body, a moving part set on the lifting bracket, and two second place under the lifting bracket and arranged at intervals. 1. A second lower mold, and an upper mold corresponding to the position of the first lower mold or the second lower mold, and the moving member can move up and down on the lifting bracket, and the upper mold can be subjected to The moving member is moved so that the upper mold is located above the first and second lower molds, and a molding cavity is formed on the first and second lower molds respectively, and a feeding channel is connected to the outside of the molding cavity, and The feeding channel corresponds to the injection device; in addition, the injection device has a seat, and a first and a second discharge seat that are divided into two parts on the seat and corresponding to the feeding channels, and the aforementioned The first and second discharge seats are filled with injection materials; as for the compression molding device, there are first and second compression molds corresponding to the first and second lower molds respectively, and the first or second compression mold The mold can be pressed against the upper mold, so that when the upper mold and the first or second lower mold are closed, the first or second discharge seat can inject the injection material into the feeding channel. , and the injection material enters the molding cavity for molding. The injection molding machine with dual molds and dual injections according to claim 1, wherein the main body is provided with a rotating member, and the rotating member can be provided with a plurality of the dual-mould devices at intervals, so as to facilitate the rotation of the rotating member. A double-molding device is moved under the pressing-molding device to perform a capping operation. The injection molding machine with dual molds and dual injections according to claim 1, wherein the dual mold device is provided with upper molds above the first and second lower molds, and the upper molds are simultaneously arranged in parallel on on the moving part, and the upper molds are respectively covered on the first and second lower molds. The injection molding machine with dual modules and dual injection according to claim 1, wherein the first and second discharge bases can be moved up and down on the base body, and vertically reciprocated.

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