Color mixing structure of mixed double-color injection machine

Abstract

The utility model discloses a color mixing structure of a mixed double-color injection machine, which comprises a confluence flange, and a first flow channel and a second flow channel which are inclined are arranged in the confluence flange; the color mixing connector is arranged on the upper side of the confluence flange through a fastener, a first color mixing connector flow channel and a second color mixing connector flow channel are arranged at the bottom of the color mixing connector, a flow dividing valve element is inserted in the color mixing connector, a first flow dividing valve element flow channel and a second flow dividing valve element flow channel are arranged in the flow dividing valve element, and the first flow dividing valve element flow channel and the second flow dividing valve element flow channel are communicated with the first flow dividing valve element flow channel. The upper portion of the flow dividing valve element is sleeved with a color mixing head, a vertical first color mixing head runner is arranged in the middle of the color mixing head, and a plurality of second color mixing head runners are arranged on the periphery of the first color mixing head runner in the circumferential direction. The utility model can solve the problems of low production efficiency and poor qualification rate caused by poor color mixing effect and unsymmetrical transition color mixing position connection when the existing injection machine is used for producing color mixing products.

Description

Technical Field

[0001] The utility model relates to the technical field of color mixing structures, in particular to a color mixing structure of a dual-color injection molding machine. Background Art

[0002] Color mixing technology refers to the mixing of two or more plastic melts of different colors to obtain plastic products of the desired color. This technology usually requires the use of special color mixing equipment or structures, such as color mixing heads, color mixing screws, etc. During the color mixing process, it is necessary to precisely control parameters such as the proportion, temperature, and injection speed of various plastic melts to ensure uniform mixing and achieve the desired dyeing effect. Traditional injection molding machines often have problems such as poor color mixing effects and uneven transitions when producing mixed-color products, which affect the appearance and quality of the products. In addition, for special products that require the production of specific patterns and stripes, the flexibility and operability of traditional injection molding machines are low, making it difficult to meet market demand. Therefore, a new color mixing structure is designed to meet current usage needs. Utility Model Content

[0003] The utility model provides a color mixing structure for a two-color injection molding machine, which can solve the problems of poor color mixing effect and uneven connection at transition mixing points when existing injection molding machines produce mixed-color products, resulting in low production efficiency and poor qualified rate.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a color mixing structure of a two-color injection molding machine, comprising a confluence flange, wherein two inclined first flow channels and a second flow channel are arranged in the confluence flange; a color mixing joint, wherein the color mixing joint is arranged on the upper side of the confluence flange through a fastener, and the bottom of the color mixing joint is provided with a first color mixing joint flow channel connected to the first flow channel and a second color mixing joint flow channel connected to the second flow channel, a diverter valve core is inserted in the color mixing joint, and a first diverter valve core flow channel connected to the first color mixing joint flow channel and a second diverter valve core flow channel connected to the second color mixing joint flow channel are arranged in the diverter valve core, a color mixing head is sleeved on the upper part of the diverter valve core, a vertical first color mixing head flow channel is arranged in the middle part of the color mixing head, and the first color mixing head flow channel is connected to the second color mixing head flow channel. The channel is connected with the second diverter valve core channel, and a plurality of second color mixing head flow channels are arranged along the circumferential direction on the outer circumference of the first color mixing head channel, and the second color mixing head flow channel is connected with the first diverter valve core channel. A plurality of vertical grooves are arranged on the outer side wall of the upper end of the color mixing head along the circumferential direction, and the upper end of the groove is provided with a flow channel hole extending inward and connected with the first color mixing head flow channel; a color mixing head transition flange, which is sleeved on the outside of the color mixing head, and the color mixing head transition flange is connected to the color mixing joint through fasteners; a color mixing head flange, the color mixing head flange is sleeved on the upper end of the color mixing head transition flange; a nozzle, which is inserted into the upper end of the color mixing head flange, and a vertical nozzle flow channel is arranged in the middle of the nozzle, which automatically adjusts the mixing ratio and injection speed of the color mixing head to achieve the best color mixing effect.

[0005] Preferably, at least one heating ring is sleeved on the outer side wall of the color mixing joint, the color mixing head transition flange, the color mixing head flange and the nozzle to maintain the temperature of the molten material.

[0006] Preferably, at least one protrusion is provided on the outer side wall of the heating ring to facilitate installation.

[0007] Preferably, the upper ends of the first diverter valve core flow channel and the second diverter valve core flow channel are both provided with steel ball seats, and steel balls are arranged in the steel ball seats. A large enough flow space is left in the steel ball seats, and the steel balls can slide smoothly in the steel ball seats. When one cavity is injected, the steel balls in the other cavity can quickly play the role of anti-return closed flow channel, preventing the pressurized molten material from flowing back into the other cavity, and avoiding mixing of the molten materials in the two cavities.

[0008] Preferably, a conical guide portion is provided at the upper end of the color mixing head, and the conical guide portion is used to guide the flow of the molten material.

[0009] Preferably, a first mounting hole matching the color mixing head transition flange is provided at the bottom of the color mixing head flange, a second mounting hole matching the conical guide portion is provided on the upper side of the first mounting hole, and a third mounting hole matching the nozzle is provided on the upper side of the second mounting hole, which is convenient for installation.

[0010] Preferably, the cross section of the nozzle flow channel gradually decreases from bottom to top, so as to increase the injection pressure or improve the injection effect.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] Improved color mixing: The design of the mixing head simplifies color changing and mixing, reducing operational steps and increasing production efficiency. It is easy to maintain, disassemble, and clean, reducing maintenance difficulty and costs. The ball seat and ball design ensure flow channel stability during the mixing process. The heating ring effectively heats the plastic in the mixing area, maintaining its fluidity. The raised portion improves heating efficiency and conserves energy. The flexible design of the mixing structure accommodates plastics of varying specifications and colors, enhancing the equipment's adaptability. This solves the problems of existing injection molding machines in producing mixed-color products, such as poor color mixing and uneven transitions, which lead to low production efficiency and poor yields. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0014] Figure 2 This is a front sectional view of the present utility model;

[0015] Figure 3 It is an exploded view of the utility model;

[0016] Figure 4 It is a side sectional view of the utility model;

[0017] Figure 5 This is a three-dimensional structural diagram of the diverter valve core of the present utility model;

[0018] Figure 6 This is a three-dimensional structural diagram of the color mixing head of the present utility model;

[0019] Figure 7 This is a three-dimensional structural diagram of the color mixing head flange of the present utility model;

[0020] Figure 8 This is a three-dimensional structural diagram of the heating ring of the present invention.

[0021] Reference numerals:

[0022] 1. Converging flange, 11. First flow channel, 12. Second flow channel, 2. Color mixing joint, 21. First color mixing joint flow channel, 22. Second color mixing joint flow channel, 3. Diverter valve core, 31. First diverter valve core flow channel, 32. Second diverter valve core flow channel, 4. Color mixing head, 41. Second color mixing head flow channel, 42. First color mixing head flow channel, 43. Groove, 44. Flow channel hole, 45. Conical guide portion, 5. Color mixing head transition flange, 6. Color mixing head flange, 61. First mounting hole, 62. Second mounting hole, 63. Third mounting hole, 7. Nozzle, 71. Nozzle flow channel, 8. Steel ball seat, 9. Steel ball, 10. Heating ring, 101. Protrusion. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0024] like Figure 1-8 As shown, the utility model is to solve the problems of poor color mixing effect and uneven connection of transition color mixing parts in the production of mixed color products by existing injection molding machines, which lead to low production efficiency and poor qualified rate, and provides the following technical solutions: a color mixing structure of a two-color injection molding machine, comprising a confluence flange 1, wherein two inclined first flow channels 11 and second flow channels 12 are arranged in the confluence flange 1; a color mixing joint 2, wherein the color mixing joint 2 is arranged on the upper side of the confluence flange 1 through a fastener, and a first color mixing joint flow channel 21 connected to the first flow channel 11 and a second color mixing joint flow channel 22 connected to the second flow channel 12 are arranged at the bottom of the color mixing joint 2, a diverter valve core 3 is inserted in the color mixing joint 2, and a first diverter valve core flow channel 31 connected to the first color mixing joint flow channel 21 and a second diverter valve core flow channel 32 connected to the second color mixing joint flow channel 22 are arranged in the diverter valve core 3, a color mixing head 4 is sleeved on the upper part of the diverter valve core 3, and the middle of the color mixing head 4 A vertical first color mixing head flow channel 42 is provided at the top, and the first color mixing head flow channel 42 is connected to the second diverter valve core flow channel 32. A plurality of second color mixing head flow channels 41 are provided along the circumferential direction on the outer circumference of the first color mixing head flow channel 42, and the second color mixing head flow channels 41 are connected to the first diverter valve core flow channel 31. A plurality of vertical grooves 43 are provided on the outer side wall of the upper end of the color mixing head 4 along the circumferential direction. The upper end of the groove 43 is provided with a groove extending inward and connected to the first color mixing head flow channel. A flow channel hole 44 connected to the flow channel 42; a color mixing head transition flange 5, which is sleeved on the outside of the color mixing head 4, and the color mixing head transition flange 5 is connected to the color mixing joint 2 through fasteners; a color mixing head flange 6, the color mixing head flange 6 is sleeved on the upper end of the color mixing head transition flange 5; a nozzle 7, which is inserted into the upper end of the color mixing head flange 6, and a vertical nozzle flow channel 71 is provided in the middle of the nozzle 7, which automatically adjusts the mixing ratio and injection speed of the color mixing head to achieve the best color mixing effect.

[0025] In this embodiment, if Figure 1 As shown, at least one heating ring 10 is sleeved on the outer side walls of the color mixing joint 2, the color mixing head transition flange 5, the color mixing head flange 6 and the nozzle 7 to maintain the temperature of the molten material.

[0026] In this embodiment, if Figure 8 As shown, at least one protrusion 101 is provided on the outer wall of the heating coil 10 for easy installation.

[0027] In this embodiment, if Figure 2 As shown, the upper ends of the first diverter valve core flow channel 31 and the second diverter valve core flow channel 32 are both provided with steel ball seats 8, and steel balls 9 are provided in the steel ball seats 8. A large enough flow space is left in the steel ball seats 8, and the steel balls 9 can slide smoothly in the steel ball seats 8. When one cavity is injected, the steel balls 9 in the other cavity can quickly play the role of anti-return closed flow channel, preventing the pressurized molten material from flowing back into the other cavity, and avoiding mixing of the molten materials in the two cavities.

[0028] In this embodiment, if Figure 6 As shown, a conical guide portion 45 is provided at the upper end of the color mixing head 4, and the conical guide portion 45 is used to guide the flow of the molten material.

[0029] In this embodiment, if Figure 7 As shown, the bottom of the color mixing head flange 6 is provided with a first mounting hole 61 that matches the color mixing head transition flange 5, the upper side of the first mounting hole 61 is provided with a second mounting hole 62 that matches the conical guide portion 45, and the upper side of the second mounting hole 62 is provided with a third mounting hole 63 that matches the nozzle 7, which is convenient for installation.

[0030] In this embodiment, if Figure 2 As shown, the cross section of the nozzle flow channel 71 gradually decreases from bottom to top, so as to increase the injection pressure or improve the injection effect.

[0031] In this embodiment, if Figure 1As shown, the color A molten material and the color B molten material flow into the first flow channel 11 and the second flow channel 12 of the confluence flange 1 respectively. The color A molten material flows through the first flow channel 11 into the first color mixing joint flow channel 21, the first diversion valve core flow channel 31 and the second color mixing head flow channel 41 and arrives at the groove 43. The color B molten material passes through the second flow channel 12, the second color mixing joint flow channel 22, the second diversion valve core flow channel 32, and the first color mixing head flow channel 42 and arrives at the groove 43. The color A molten material and the color B molten material are mixed in the groove 43. The mixed molten material is guided by the tapered guide part 45 and the second mounting hole 62, flows into the nozzle flow channel 71, and is finally injected into the mold. The coordination of ball bearings 8 and 9 leaves ample room for material flow, allowing smooth sliding of ball bearings 9. During injection of color A molten material into chamber 1, ball bearings 9 in chamber 2, containing color B molten material, quickly act as a check valve to seal the flow path, preventing the pressurized molten material from flowing back into the other chamber and mixing the two molten materials. The color mixing head 4 is a key component, directly determining the product's color difference performance, color arrangement, and pattern. By replacing the color mixing head 4 with a different one, while keeping all other components unchanged, a wide variety of product patterns can be produced to meet the needs of diverse customers.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. A color mixing structure of a double-color injection molding machine, characterized in that: include: A confluence flange (1), wherein two inclined first flow channels (11) and a second flow channel (12) are provided in the confluence flange (1); A color mixing joint (2), wherein the color mixing joint (2) is arranged on the upper side of the confluence flange (1) through a fastener, and the bottom of the color mixing joint (2) is provided with a first color mixing joint flow channel (21) connected to the first flow channel (11) and a second color mixing joint flow channel (22) connected to the second flow channel (12), a diverter valve core (3) is inserted into the color mixing joint (2), and the diverter valve core (3) is provided with a first diverter valve core flow channel (31) connected to the first color mixing joint flow channel (21) and a second diverter valve core flow channel (32) connected to the second color mixing joint flow channel (22), and the upper part of the diverter valve core (3) A color mixing head (4) is sleeved, a vertical first color mixing head flow channel (42) is provided in the middle of the color mixing head (4), the first color mixing head flow channel (42) is connected to the second diverter valve core flow channel (32), a plurality of second color mixing head flow channels (41) are provided along the circumferential direction on the outer periphery of the first color mixing head flow channel (42), the second color mixing head flow channels (41) are connected to the first diverter valve core flow channel (31), a plurality of vertical grooves (43) are provided along the circumferential direction on the outer side wall of the upper end of the color mixing head (4), and a flow channel hole (44) extending inward and connected to the first color mixing head flow channel (42) is provided at the upper end of the groove (43); A color mixing head transition flange (5) is sleeved on the outside of the color mixing head (4), and the color mixing head transition flange (5) is connected to the color mixing joint (2) via a fastener; A color mixing head flange (6), wherein the color mixing head flange (6) is sleeved on the upper end of the color mixing head transition flange (5); A nozzle (7) is inserted into the upper end of the color mixing head flange (6), and a vertical nozzle flow channel (71) is provided in the middle of the nozzle (7).

2. The color mixing structure of the dual-color injection molding machine according to claim 1, characterized in that: At least one heating ring (10) is sleeved on the outer side walls of the color mixing joint (2), the color mixing head transition flange (5), the color mixing head flange (6) and the nozzle (7).

3. The color mixing structure of the dual-color injection molding machine according to claim 2, characterized in that: At least one protrusion (101) is provided on the outer side wall of the heating ring (10).

4. The color mixing structure of the dual-color injection molding machine according to claim 1, characterized in that: A steel ball seat (8) is provided at the upper end of each of the first diverter valve core flow channel (31) and the second diverter valve core flow channel (32), and a steel ball (9) is provided in each of the steel ball seats (8).

5. The color mixing structure of the dual-color injection molding machine according to claim 1, characterized in that: The upper end of the color mixing head (4) is provided with a tapered guide portion (45).

6. The color mixing structure of the dual-color injection molding machine according to claim 5, characterized in that: A first mounting hole (61) matching the color mixing head transition flange (5) is provided at the bottom of the color mixing head flange (6), a second mounting hole (62) matching the tapered guide portion (45) is provided on the upper side of the first mounting hole (61), and a third mounting hole (63) matching the nozzle (7) is provided on the upper side of the second mounting hole (62).

7. The color mixing structure of a dual-color injection molding machine according to claim 1, characterized in that: The cross section of the nozzle flow channel (71) gradually decreases from bottom to top.

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