Injection mold for forming double-color product and injection molding machine applying mold

Abstract

The invention discloses an injection mold for forming a double-color product and an injection molding machine applying the mold. The injection mold comprises a first movable mold plate, a first fixed mold plate, a second fixed mold plate and a second movable mold plate, the first movable mold plate and the first fixed mold plate are used for injection molding of a first color part; the second fixed mold plate and the second movable mold plate are used for forming a second color part; the injection mold further comprises a mold closing assembly, and the mold closing assembly comprises a fixed mold part and a movable mold part. Single-color injection molding of the first-color part or the second-color part can be carried out; inner and outer layer color changing injection molding of an injection molding part can be carried out; during double-color injection molding, a semi-finished product rotates in the horizontal direction, shaking of the semi-finished product can be reduced, and the injection molding precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of dry ice cleaning agents, and in particular to an injection mold for molding a two-color product and an injection molding machine using the mold. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is a key plastic molding equipment, which is specially used to process thermoplastic plastics or thermosetting plastics into plastic products of various shapes through plastic molding molds. The equipment is mainly divided into three types: vertical, horizontal and all-electric. The core function of the injection molding machine is to heat the plastic, melt it, and eject it under high pressure to fill the mold cavity. In this process, the two-color injection molding machine, as a special injection molding machine, plays an important role. In the existing technology, the two-color injection molding machine realizes the production of two-color or two-material products through two independent injection molds. The specific operation process is: first inject the first color of plastic into one mold cavity, then transfer the semi-finished product to the second mold cavity, and then inject the second color of plastic. In this way, plastic products with two different colors or materials can be finally obtained, which greatly enriches the design and application range of the product.

[0003] In the prior art, most two-color injection molds are produced by rotating the mold 180 degrees backwards, that is, after single-color injection molding, the semi-finished product is rotated 180 degrees along with the rear mold, and the second mold is used to inject the second color to complete the two-color injection molding. In this way, the rear mold is driven to rotate in a direction perpendicular to the bottom surface. Affected by gravity, the semi-finished product is easily deformed and the injection molding accuracy is not high.

[0004] Therefore, how to provide an injection mold for molding two-color products and an injection molding machine using the mold to solve the problems existing in the prior art is of great significance to its application. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide an injection mold for molding two-color products and an injection molding machine using the mold, so as to solve the problem in the existing method that the rear mold is driven to rotate in a direction perpendicular to the bottom surface, the semi-finished product is easily deformed due to the influence of gravity, and the injection molding accuracy is not high.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An injection mold for molding a two-color product and an injection molding machine using the mold, the injection mold comprising a first movable mold plate, a first fixed mold plate, a second fixed mold plate, and a second movable mold plate;

[0008] The first movable platen and the first fixed platen are used for injection molding of the first color part; the second fixed platen and the second movable platen are used for molding of the second color part;

[0009] Also included is a mold clamping assembly, which includes a fixed mold part and a movable mold part;

[0010] The fixed mold part includes a fixed mold fixing plate, and the first fixed mold plate and the second fixed mold plate are respectively installed on both sides of the fixed mold fixing plate;

[0011] The movable mold part includes a first fixed plate and a second fixed plate, the first movable mold plate is installed on the side of the first fixed plate, and the second movable mold plate is installed on the side of the second fixed plate.

[0012] Preferably, the mold clamping assembly also includes a central platform, a rotating ring, a first driving mechanism and a second driving mechanism. The rotating ring and the central platform are rotatably connected via a rotating bearing. Both sides of the top of the rotating ring are fixedly connected with a fixing frame, and the top of the fixing frame is fixedly connected with a support plate. The first driving mechanism and the second driving mechanism are respectively installed on both sides of the top of the support plate. The first fixed plate is fixedly connected to the telescopic end of the first driving mechanism, and the second fixed plate is fixedly connected to the telescopic end of the second driving mechanism.

[0013] Preferably, a rotating motor is installed at the bottom end of the central platform, the rotating end of the rotating motor is fixedly connected to the fixed mold fixing plate, and the top end of the fixed mold fixing plate is rotatably connected to the bottom end of the support plate.

[0014] Preferably, a base is installed at the bottom end of the central platform, a supporting roller frame is installed on the side of the base, a supporting roller is installed at the end of the supporting roller frame, and the supporting roller is rotatably connected to the bottom end of the rotating ring.

[0015] Preferably, a rotating motor is fixedly connected to one side of the base through a motor support frame, the main shaft of the rotating motor is transmission-connected to a driving gear, a driving ring gear is installed at the bottom end of the rotating ring, and the driving ring gear is meshingly connected to the driving gear.

[0016] Preferably, the second driving mechanism includes a second motor, a second movable block, and a second threaded rod, the output shaft of the second motor is drivingly connected to the second threaded rod, the second movable block is threadedly connected to the second threaded rod, and the second movable block is fixedly connected to the second fixed plate.

[0017] Preferably, the first driving mechanism includes a first threaded rod, a first movable block and a first motor, the output shaft of the first motor is drivingly connected to the first threaded rod, the first threaded rod and the first movable block are threadedly connected, and the first movable block is fixedly connected to the first fixed plate.

[0018] Preferably, the injection molding machine also includes a first color part injection molding machine, a second color part injection molding machine, a second machine station and the first machine station, and the tops of the first machine station and the second machine station are respectively installed with a first color part injection molding machine drive mechanism and a second color part injection molding machine drive mechanism, the first color part injection molding machine is installed at the drive end of the first color part injection molding machine drive mechanism, and the second color part injection molding machine is installed at the drive end of the second color part injection molding machine drive mechanism.

[0019] Preferably, the first fixed plate and the middle part of the rotating bearing are both provided with injection nozzles, and the injection nozzles are adapted to the injection ends of the second color part injection molding machine and the first color part injection molding machine.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention can perform two-color injection molding;

[0022] 2. The present invention can perform single-color injection molding of the first color part or the second color part;

[0023] 3. The present invention can perform color-changing injection molding of the inner and outer layers of the injection molded parts;

[0024] 4. In the present invention, during double-color injection molding, the semi-finished product rotates in the horizontal direction, which can reduce the shaking of the semi-finished product and improve the injection molding accuracy.

[0025] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0026] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2It is a structural diagram of the mold clamping assembly in the present invention;

[0030] Figure 3 It is a structural diagram of the rotating ring in the present invention;

[0031] Figure 4 It is a structural diagram of the central platform in the present invention.

[0032] In the figure: 1. first movable platen; 2. first fixed platen; 3. second fixed platen; 4. second movable platen; 5. rotating motor; 6. center platform; 7. support roller frame; 8. support roller; 9. fixed frame; 10. second fixed plate; 11. second motor; 12. second movable block; 13. second threaded rod; 14. fixed plate of fixed mold; 15. support plate; 16. first threaded rod; 17. first movable block; 18. first fixed plate; 19. first motor; 20. rotating bearing; 21. rotating ring; 22. driving gear ring; 23. driving gear; 24. rotating motor; 25. motor support frame; 26. base; 27. second color part injection molding machine driving mechanism; 28. first driving mechanism; 29. ​​second driving mechanism; 30. second machine; 31. first color part injection molding machine driving mechanism; 32. first color part injection molding machine; 33. first machine; 34. second color part injection molding machine. DETAILED DESCRIPTION

[0033] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0034] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0035] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0036] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0037] See also Figure 1-4 The present invention provides a technical solution of an injection mold for molding a two-color product and an injection molding machine using the mold: the injection mold includes a first movable mold plate 1, a first fixed mold plate 2, a second fixed mold plate 3, and a second movable mold plate 4;

[0038] The first movable platen 1 and the first fixed platen 2 are used for injection molding of the first color part; the second fixed platen 3 and the second movable platen 4 are used for molding of the second color part;

[0039] It also includes a mold clamping assembly, which includes a fixed mold part and a movable mold part;

[0040] The fixed mold part includes a fixed mold fixing plate 14, and the first fixed mold plate 2 and the second fixed mold plate 3 are respectively installed on both sides of the fixed mold fixing plate 14;

[0041] The movable mold part includes a first fixed plate 18 and a second fixed plate 10 . The first movable mold plate 1 is installed on the side of the first fixed plate 18 , and the second movable mold plate 4 is installed on the side of the second fixed plate 10 .

[0042] The mold clamping assembly also includes a central platform 6, a rotating ring 21, a first driving mechanism 28 and a second driving mechanism 29. The rotating ring 21 and the central platform 6 are rotatably connected via a rotating bearing 20. Both sides of the top of the rotating ring 21 are fixedly connected to a fixing frame 9, and the top of the fixing frame 9 is fixedly connected to a support plate 15. The first driving mechanism 28 and the second driving mechanism 29 are respectively installed on both sides of the top of the support plate 15. The first fixed plate 18 is fixedly connected to the telescopic end of the first driving mechanism 28, and the second fixed plate 10 is fixedly connected to the telescopic end of the second driving mechanism 29.

[0043] A rotary motor 5 is installed at the bottom end of the central platform 6 , and the rotating end of the rotary motor 5 is fixedly connected to the fixed mold fixing plate 14 , and the top end of the fixed mold fixing plate 14 is rotatably connected to the bottom end of the support plate 15 .

[0044] A base 26 is installed at the bottom end of the central platform 6 , a supporting roller frame 7 is installed on the side of the base 26 , a supporting roller 8 is installed at the end of the supporting roller frame 7 , and the supporting roller 8 is rotatably connected to the bottom end of the rotating ring 21 .

[0045] A rotating motor 24 is fixedly connected to one side of the base 26 through a motor support frame 25 . The main shaft of the rotating motor 24 is transmission-connected to a driving gear 23 . A driving ring gear 22 is installed at the bottom end of the rotating ring 21 . The driving ring gear 22 is meshedly connected to the driving gear 23 .

[0046] The second driving mechanism 29 includes a second motor 11 , a second movable block 12 , and a second threaded rod 13 . The output shaft of the second motor 11 is transmission-connected to the second threaded rod 13 . The second movable block 12 is threadedly connected to the second threaded rod 13 . The second movable block 12 is fixedly connected to the second fixed plate 10 .

[0047] The first driving mechanism 28 includes a first threaded rod 16 , a first movable block 17 and a first motor 19 . The output shaft of the first motor 19 is transmission-connected to the first threaded rod 16 . The first threaded rod 16 and the first movable block 17 are threadedly connected. The first movable block 17 is fixedly connected to the first fixed plate 18 .

[0048] The first driving mechanism 28 and the second driving mechanism 29 may also be oil cylinders, air cylinders, or electric cylinders.

[0049] The injection molding machine also includes a first color part injection molding machine 32, a second color part injection molding machine 34, a second machine platform 30 and a first machine platform 33. The tops of the first machine platform 33 and the second machine platform 30 are respectively installed with a first color part injection molding machine driving mechanism 31 and a second color part injection molding machine driving mechanism 27. The first color part injection molding machine 32 is installed at the driving end of the first color part injection molding machine driving mechanism 31, and the second color part injection molding machine 34 is installed at the driving end of the second color part injection molding machine driving mechanism 27.

[0050] The first fixed plate 18 and the middle of the rotating bearing 20 are both provided with injection nozzles, which are adapted to the injection ends of the second color part injection molding machine 34 and the first color part injection molding machine 32.

[0051] When used specifically:

[0052] The present invention can switch between different modes according to different types of injection molding products;

[0053] Two-color injection molding:

[0054] Method 1:

[0055] The first movable platen 1 is opposite to the first fixed platen 2, and the second movable platen 4 is opposite to the second fixed platen 3. Then the first driving mechanism 28 drives the first movable platen 1 to close the mold with the first fixed platen 2. Then the first color part injection molding machine driving mechanism 31 drives the injection end of the first color part injection molding machine 32 to inject the first color part between the first movable platen 1 and the first fixed platen 2 to perform injection molding of the first color part. Then the first driving mechanism 28 drives the first movable platen 1 and the first fixed platen 2 to open the mold. After injection molding, the first color part temporarily stays on the first fixed platen 2. Then the rotating motor 5 rotates 180 degrees through the fixed mold fixing plate 14, so that the first color part faces the second movable platen 4. The second driving mechanism 29 drives the second movable platen 4 to close the mold with the first fixed platen 2. Then the second color part injection molding machine 34 injects the second color part to achieve two-color injection molding.

[0056] Method 2:

[0057] In order to prevent the first color part from shaking when the mold is opened after the first color part is injection molded, the mold is not opened after the first color part is molded, and the mold assembly is rotated as a whole so that the first color part faces the second color part injection molding machine 34, and then the mold is opened, and the rotating motor 24 drives the driving gear 23 to rotate, and the driving gear 23 drives the rotating ring 21 to rotate 180 degrees through the driving ring gear 22, so that the two movable templates exchange positions, and the second movable template 4 is used to complete the second color injection molding. This method has higher precision.

[0058] Single color injection molding: divided into first color partial injection molding and second color partial injection molding;

[0059] When the first color part is injected, the driving gear 23 is driven to rotate by the rotating motor 24, and the driving gear 23 drives the rotating ring 21 to rotate 180 degrees through the driving gear ring 22, so that the second movable plate 4 and the first fixed plate 2 can be molded together, and the first color part injection molding machine 32 injects, completing the first single-color injection molding;

[0060] When the second color part injection molding is adopted, the second movable mold plate 4 and the second fixed mold plate 3 are directly molded, and the second color part injection molding machine 34 is adopted to perform injection molding, thereby realizing the second single color injection molding;

[0061] Two-color partial exchange injection molding:

[0062] When in use, the driving gear 23 is driven to rotate by the rotating motor 24, and the driving gear 23 drives the rotating ring 21 to rotate 180 degrees through the driving gear ring 22. At this time, the first movable template 1 corresponds to the second fixed template 3, and the second color part injection molding machine 34 is used for injection molding, thereby realizing the injection molding of the second color part semi-finished product, and then the rotating motor 5 rotates 180 degrees through the fixed mold fixing plate 14, thereby driving the second color part semi-finished product to rotate toward the second movable template 4, and the first color part injection molding machine 32 completes the injection molding of the first color part, thereby realizing the exchange injection molding of the two-color parts.

[0063] The above description is only the preferred embodiment of the present invention, which does not limit the protection scope of the present invention. For those skilled in the art, the present invention can be modified and varied in various ways. Within the spirit and principle of the present invention, any change, modification, replacement, integration and parameter change of these embodiments by conventional substitution or capable of achieving the same function without departing from the principle and spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. An injection mold for molding a two-color product and an injection molding machine using the mold, characterized in that: The injection mold comprises a first movable mold plate (1), a first fixed mold plate (2), a second fixed mold plate (3), and a second movable mold plate (4); The first movable platen (1) and the first fixed platen (2) are used for injection molding of the first color part; the second fixed platen (3) and the second movable platen (4) are used for molding the second color part; Also included is a mold clamping assembly, which includes a fixed mold part and a movable mold part; The fixed mold part comprises a fixed mold fixing plate (14), and the first fixed mold plate (2) and the second fixed mold plate (3) are respectively mounted on two sides of the fixed mold fixing plate (14); The movable mold part comprises a first fixed plate (18) and a second fixed plate (10), the first movable mold plate (1) is installed on the side of the first fixed plate (18), and the second movable mold plate (4) is installed on the side of the second fixed plate (10).

2. The injection mold for molding a two-color product and the injection molding machine using the mold as claimed in claim 1, characterized in that: The mold clamping assembly also includes a central platform (6), a rotating ring (21), a first driving mechanism (28) and a second driving mechanism (29); the rotating ring (21) and the central platform (6) are rotatably connected via a rotating bearing (20); both sides of the top of the rotating ring (21) are fixedly connected to a fixing frame (9); the top of the fixing frame (9) is fixedly connected to a support plate (15); the first driving mechanism (28) and the second driving mechanism (29) are respectively mounted on both sides of the top of the support plate (15); the first fixing plate (18) is fixedly connected to the telescopic end of the first driving mechanism (28); and the second fixing plate (10) is fixedly connected to the telescopic end of the second driving mechanism (29).

3. The injection mold for molding a two-color product and the injection molding machine using the mold as claimed in claim 2, characterized in that: A rotating motor (5) is installed at the bottom end of the central platform (6), the rotating end of the rotating motor (5) is fixedly connected to the fixed mold fixing plate (14), and the top end of the fixed mold fixing plate (14) is rotatably connected to the bottom end of the support plate (15).

4. The injection mold for molding a two-color product and the injection molding machine using the mold as claimed in claim 3, characterized in that: A base (26) is installed at the bottom end of the central platform (6), a supporting roller frame (7) is installed on the side of the base (26), a supporting roller (8) is installed at the end of the supporting roller frame (7), and the supporting roller (8) is rotatably connected to the bottom end of the rotating ring (21).

5. The injection mold for molding a two-color product and the injection molding machine using the mold as claimed in claim 4, characterized in that: A rotating motor (24) is fixedly connected to one side of the base (26) via a motor support frame (25); the main shaft of the rotating motor (24) is transmission-connected to a driving gear (23); a driving ring gear (22) is installed at the bottom end of the rotating ring (21); and the driving ring gear (22) is meshingly connected to the driving gear (23).

6. The injection mold for molding a two-color product and the injection molding machine using the mold as claimed in claim 5, characterized in that: The second driving mechanism (29) comprises a second motor (11), a second movable block (12), and a second threaded rod (13); the output shaft of the second motor (11) is drivingly connected to the second threaded rod (13); the second movable block (12) is threadedly connected to the second threaded rod (13); and the second movable block (12) is fixedly connected to the second fixed plate (10).

7. An injection mold for molding a two-color product and an injection molding machine using the mold as claimed in claim 6, characterized in that: The first driving mechanism (28) comprises a first threaded rod (16), a first movable block (17) and a first motor (19); the output shaft of the first motor (19) is transmission-connected to the first threaded rod (16); the first threaded rod (16) and the first movable block (17) are threadedly connected; and the first movable block (17) is fixedly connected to the first fixed plate (18).

8. The injection mold for molding a two-color product and the injection molding machine using the mold as claimed in claim 7, characterized in that: The injection molding machine further comprises a first color section injection molding machine (32), a second color section injection molding machine (34), a second machine platform (30) and a first machine platform (33); the first color section injection molding machine drive mechanism (31) and the second color section injection molding machine drive mechanism (27) are respectively installed on the top of the first machine platform (33) and the second machine platform (30); the first color section injection molding machine (32) is installed on the drive end of the first color section injection molding machine drive mechanism (31), and the second color section injection molding machine (34) is installed on the drive end of the second color section injection molding machine drive mechanism (27).

9. An injection mold for molding a two-color product and an injection molding machine using the mold as claimed in claim 8, characterized in that: The first fixed plate (18) and the middle part of the rotating bearing (20) are both provided with injection nozzles, and the injection nozzles are compatible with the injection ends of the second color part injection molding machine (34) and the first color part injection molding machine (32).

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