A multi-channel multi-color injection mold

Abstract

The invention discloses a multi-channel multi-color injection mold, which relates to the technical field of multi-color injection molding, and comprises a bottom mold, the top surface of the bottom mold is fixedly connected to a cavity mold, the top surface of the cavity mold is fixedly connected to a mold block, and a guide groove is provided on the top surface of the cavity mold. The advantages of the invention are that hard plastic and soft rubber can be injection molded at one time, which saves production time and investment cost, and at the same time, the fixation between the hard plastic and the soft rubber can be completed by natural melting without adopting other connection methods, which further saves time and cost while ensuring the fixing effect of the connection, prolonging the service life, and ensuring the quality of the product, and avoiding the simultaneous injection of raw materials, which not only avoids the blockage of the mold, but also can form the product normally, so that the opening and closing of the injection hole can be automatically controlled according to the production sequence, without the need for sensors and other components to participate in the work, avoiding the failure of electrical components to affect the life of the mold, and also avoiding the difficulty of wiring.

Description

Technical Field

[0001] The invention relates to the technical field of multi-color injection molding, in particular to a multi-channel multi-color injection molding mold. Background Art

[0002] Multi-channel injection molds are efficient and precise molds, which are widely used in the production of connector housings, plastic tube blanks and other products. Multi-channel injection molds usually include multiple templates and runner systems. The templates are provided with mold bases, mold cores and partitions. The partitions separate adjacent mold cores to form multiple cavities. The runner system includes primary runners and secondary runners, which are used to divert the injection liquid to each cavity.

[0003] In the production process of earphones, the earphone shell needs to be injection molded. The finished in-ear earphones, in addition to the hard shell, also need a soft rubber cover to go into the ear. The general injection mold can only injection mold one kind of raw material at a time, and it is impossible to injection mold the hard shell and the soft rubber cover at the same time. In addition, other methods are needed to fix the two. The connection between the two cannot be integrated and fixed, resulting in loose fixation, shortening the service life and affecting the quality of the product.

[0004] After searching, Chinese patent application CN113787678A discloses an injection mold for a multi-channel lens and a molding method thereof. Although a multi-channel lens with clear edges between internal channels can be obtained by step-by-step molding, and the connection structure between each single-channel lens body is stable and firm, it is impossible to mold and connect two materials of different components and colors, and the above-mentioned problem cannot be solved. At the same time, the setting of multiple injection holes makes it easy for raw materials to be injected at the same time, which not only makes the mold easy to be blocked, but also makes it impossible to mold the product, so that the opening and closing of the injection holes need to be controlled according to the production sequence. Summary of the invention

[0005] The object of the present invention is to provide a multi-channel multi-color injection mold.

[0006] In order to solve the problems raised in the above background technology, the present invention provides the following technical solutions: a multi-channel multi-color injection mold, comprising a bottom mold, the top surface of the bottom mold is fixedly connected to a concave mold, the top surface of the concave mold is fixedly connected to a mold block, and the top surface of the concave mold is provided with a guide groove, a guide rod is slidably sleeved in the guide groove, a punch is fixedly connected to the top of the guide rod, both sides of the punch are equipped with water inlets, and the top surface of the punch is fixedly connected to a top mold, a first injection hole and a second injection hole are provided on the top surface of the top mold, the punch is connected to the top mold to form a first flow channel and a second flow channel, the bottom surface of the punch is provided with a mold cavity, the punch is provided with an inner cavity, the inner top surface of the mold cavity is provided with an annular groove, a mold ring is sleeved in the annular groove, a second cooling channel is provided in the mold ring, and a guide tube and a pull rod are fixedly connected to the top surface of the mold ring, a sleeve is slidably sleeved on the top of the pull rod, and a connecting channel is connected between the top of the sleeve and the inner cavity;

[0007] A first cooling channel is provided in the male mold, two water inlets are provided, and the two water inlets are connected to both ends of the first cooling channel, a piston is provided between the pull rod and the sleeve, an evaporative liquid is provided in the inner cavity, the first flow channel is connected to the bottom end of the cavity, the second flow channel is connected to the top end of the cavity, a hard plastic is formed between the cavity and the mold block, and a soft rubber is formed at the top end of the cavity;

[0008] The conduit is in communication with the first cooling channel, the first cooling channel is connected in parallel with the second cooling channel, a plurality of the tie rods and the sleeves are provided, and the plurality of tie rods and the plurality of sleeves are evenly distributed about the central axis of the mold ring;

[0009] The inlet end of the first cooling channel is provided with an expansion cavity, and a fixing frame is fixedly connected to the end surface of the expansion cavity, and the fixing frame is provided with two, and a first rotating shaft is rotatably connected between the two fixing frames, one end of the first rotating shaft is fixedly connected to a fan blade, and the other end of the first rotating shaft is fixedly connected to a worm wheel, the outer surface of the worm wheel is meshed with a worm, the lead angle of the worm is greater than the equivalent friction angle between the meshing gear teeth of the worm wheel, and the top surface of the worm is fixedly connected to one end of the transmission shaft, and the other end of the transmission shaft is fixedly connected to a rotating block, the top surface of the rotating block is embedded and sleeved with a prism, the top end of the prism is fixedly connected to an active helical gear, the outer surface of the active helical gear is meshed and connected with a driven helical gear, and one end of the second rotating shaft is fixedly connected to the central axis of the driven helical gear, and the other end of the second rotating shaft is provided with an internal thread, a meshing block is meshed and sleeved on the internal thread, and a baffle is fixedly connected to the side wall of the meshing block.

[0010] As a further solution of the present invention: the inner cavity surrounds the bottom end of the cavity, the bottom end of the second flow channel is in an inclined ring shape, and the bottom end of the first flow channel is in an umbrella rib shape.

[0011] As a further solution of the present invention: a plurality of fan blades are provided, and the plurality of fan blades are evenly distributed about the central axis of the first rotating shaft, the transmission shaft is rotatably sleeved with the punch, and the rotating block is rotatably sleeved with the top surface of the punch.

[0012] As a further solution of the present invention: the prism, the active bevel gear, the driven bevel gear and the second rotating shaft are all rotatably sleeved with the top mold, the engagement block and the baffle are slidably sleeved with the top mold, and the baffle extends into the second flow channel.

[0013] As a further solution of the present invention: the end of the internal thread has an annular groove, and the width of the annular groove is the same as the width of the engaging block, a spring is fixedly connected between the side wall of the engaging block and the top mold, and a torsion spring is fixedly connected between the outer surface of the second rotating shaft and the top mold.

[0014] As a further solution of the present invention: the rotating block drives the second rotating shaft to rotate through the prism, the driving bevel gear and the driven bevel gear, and the second rotating shaft drives the meshing block and the baffle to translate through the internal thread.

[0015] Adopting the above technical solution: Compared with the prior art, the beneficial effects of the present invention are:

[0016] The present invention makes the bottom surface of the mold ring close to the inner surface of the mold cavity, so that the mold ring, the mold cavity and the mold block are filled with hard plastic liquid. At this time, the external water pipe is controlled to transport cooling liquid, so that the cooling liquid enters the punch through the water inlet, thereby cooling the punch and the mold ring through the first cooling channel and the second cooling channel, so that the hard plastic is initially formed, and the evaporated liquid in the inner cavity is re-condensed, thereby reducing the air pressure in the inner cavity, so that the mold ring is reset, and when the seal of the second injection hole is released, the soft rubber liquid can enter the top of the mold cavity through the second injection hole, so that soft rubber is formed between the hard plastic and the mold cavity, so that the hard plastic and the soft rubber can be injection molded at one time, saving production time and investment cost. At the same time, the fixation between the hard plastic and the soft rubber can be completed by natural melting, without the need to adopt other connection methods, further saving time and cost, while ensuring the fixing effect of the connection, extending the service life, and ensuring the quality of the product.

[0017] The present invention drives the meshing block to translate by cooling water, so that the baffle on the meshing block is disengaged from the second flow channel, thereby releasing the seal of the second injection hole. When the soft rubber liquid is injected, cooling water is further introduced to make the meshing block further translate until the meshing block moves into the annular groove. At this time, the internal thread is disengaged from the meshing block, and the spring and the torsion spring are both stressed until the introduction of cooling water is stopped. At this time, the spring and the torsion spring return, so that the second rotating shaft rotates, and the meshing block re-engages with the internal thread, thereby resetting the meshing block and the baffle, re-sealing the second injection hole, and avoiding simultaneous injection of raw materials. This not only avoids clogging of the mold, but also allows the product to be formed normally, so that the opening and closing of the injection hole can be automatically controlled according to the production sequence, without the need for sensors and other components to participate in the work, avoiding the failure of electrical components to affect the life of the mold, and also avoiding the difficulty of wiring.

[0018] The faster the flow rate of the cooling water of the present invention is, the faster the opening speed of the second injection hole is, so that the injection efficiency of the soft rubber liquid is faster, avoiding the complete cooling of the hard plastic, thereby ensuring the fixation of the soft rubber and the hard plastic, and the two can work together without additional control. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a multi-channel and multi-color injection mold of the present invention;

[0020] Figure 2 It is a rear view of the overall structure in the embodiment of the present invention;

[0021] Figure 3 A half-section schematic diagram of a male mold structure in an embodiment of the present invention;

[0022] Figure 4 A half-section schematic diagram of a mold cavity in an embodiment of the present invention;

[0023] Figure 5 In the embodiment of the present invention Figure 3 A magnified view of the structure of part A;

[0024] Figure 6 In the embodiment of the present invention Figure 3 A magnified view of the structure of part B;

[0025] Figure 7 This is a schematic diagram of the connecting channel structure in an embodiment of the present invention;

[0026] Figure 8 A schematic diagram of the structure of the meshing block in an embodiment of the present invention;

[0027] Fig. 9 Schematic diagram of the hard plastic structure in an embodiment of the present invention.

[0028] In the figure: 1, bottom mold; 2, concave mold; 3, mold block; 4, guide groove; 5, guide rod; 6, punch; 7, water inlet; 8, top mold; 9, first injection hole; 10, second injection hole; 11, first flow channel; 12, second flow channel; 13, mold cavity; 14, inner cavity; 15, annular groove; 16, mold ring; 17, guide tube; 18, pull rod; 19, sleeve; 20, connecting channel; 21, first cooling channel; 22, expansion cavity; 23, fixed frame; 24, first rotating shaft; 25, fan blade; 26, worm gear; 27, worm; 28, transmission shaft; 29, rotating block; 30, prism; 31, active bevel gear; 32, driven bevel gear; 33, second rotating shaft; 34, internal thread; 35, meshing block; 36, baffle; 37, hard plastic; 38, soft rubber. DETAILED DESCRIPTION

[0029] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Example 1: Please refer to Figure 1-Figure 4 and Figure 7The present invention provides a technical solution: a multi-channel multi-color injection mold, comprising a bottom mold 1, a concave mold 2 is fixedly connected to the top surface of the bottom mold 1, a mold block 3 is fixedly connected to the top surface of the concave mold 2, and a guide groove 4 is provided on the top surface of the concave mold 2, a guide rod 5 is slidably sleeved in the guide groove 4, a convex mold 6 is fixedly connected to the top of the guide rod 5, water inlets 7 are installed on both sides of the convex mold 6, and a top mold 8 is fixedly connected to the top surface of the convex mold 6, a first injection hole 9 and a second injection hole 10 are provided on the top surface of the top mold 8, and the convex mold 6 A first flow channel 11 and a second flow channel 12 are connected to the top mold 8, a cavity 13 is provided on the bottom surface of the punch 6, an inner cavity 14 is provided in the punch 6, an annular groove 15 is provided on the inner top surface of the cavity 13, a mold ring 16 is sleeved in the annular groove 15, a second cooling channel is arranged in the mold ring 16, and a conduit 17 and a pull rod 18 are fixedly connected to the top surface of the mold ring 16, a sleeve 19 is slidably sleeved on the top end of the pull rod 18, and a connecting channel 20 is connected between the top end of the sleeve 19 and the inner cavity 14.

[0031] See also Figure 7 The conduit 17 is connected to the first cooling channel 21 , the first cooling channel 21 is connected in parallel with the second cooling channel, a plurality of tie rods 18 and a plurality of sleeves 19 are provided, and the plurality of tie rods 18 and the plurality of sleeves 19 are evenly distributed about the central axis of the mold ring 16 .

[0032] See also Figure 3 and Figure 4 The inner cavity 14 surrounds the bottom end of the cavity 13, the bottom end of the second flow channel 12 is in an inclined ring shape, and the bottom end of the first flow channel 11 is in an umbrella rib shape.

[0033] Specifically, during the injection molding process of the multi-channel multi-color injection mold, the bottom mold 1 and the top mold 8 are installed in the double-material injection molding machine, and the water inlet 7 is connected to the external water pipe. When the mold is closed and the raw material is injected, the liquid of the hard plastic 37 enters the first flow channel 11 through the first injection hole 9, and the first flow channel 11 guides and diverts the liquid, so that the liquid of the hard plastic 37 flows evenly between the cavity 13 and the mold block 3. At this time, as the liquid flows in, the high temperature of the liquid will be transmitted to the punch 6, so that the punch 6 heats the evaporating liquid in the inner cavity 14, so that the evaporating liquid vaporizes and enters the sleeve 19 through the connecting channel 20, thereby increasing the air pressure in the sleeve 19, causing the piston and the pull rod 18 in the sleeve 19 to be pressurized and reduced, and then the pull rod 18 pushes the mold ring 16 to move, so that the bottom surface of the mold ring 16 is in close contact with the inner surface of the cavity 13, so that the mold ring 16, the cavity 13 and the mold block 3 are filled with the liquid of the hard plastic 37, and then the control An external water pipe is used to transport the coolant, so that the coolant enters the punch 6 through the water inlet 7, thereby cooling the punch 6 and the mold ring 16 through the first cooling channel 21 and the second cooling channel, so that the hard plastic 37 is initially formed, and the evaporated liquid in the inner cavity 14 is re-condensed, thereby reducing the air pressure in the inner cavity 14, so that the mold ring 16 is reset, and when the seal of the second injection hole 10 is released, the liquid of the soft rubber 38 can enter the top of the cavity 13 through the second injection hole 10, so that the soft rubber 38 is formed between the hard plastic 37 and the cavity 13, so that the hard plastic 37 and the soft rubber 38 can be injection molded at one time, saving production time and investment cost. At the same time, the fixation between the hard plastic 37 and the soft rubber 38 can be completed by natural melting, without the need to adopt other connection methods, further saving time and cost, while ensuring the fixing effect of the connection, extending the service life, and ensuring the quality of the product.

[0034] Example 2: Please refer to Figure 3-Figure 6 and Figure 8The present invention provides a technical solution: a multi-channel multi-color injection mold, wherein an expansion cavity 22 is provided at the inlet end of a first cooling channel 21, a fixing frame 23 is fixedly connected to the end surface of the expansion cavity 22, two fixing frames 23 are provided, and a first rotating shaft 24 is rotatably connected between the two fixing frames 23, a fan blade 25 is fixedly connected to one end of the first rotating shaft 24, a worm wheel 26 is fixedly connected to the other end of the first rotating shaft 24, a worm 27 is meshedly connected to the outer surface of the worm wheel 26, the lead angle of the worm 27 is greater than the equivalent friction angle between the meshing gear teeth of the worm wheel 26, and One end of a transmission shaft 28 is fixedly connected to the top surface of the worm 27, and a rotating block 29 is fixedly connected to the other end of the transmission shaft 28. A prism 30 is fitted and sleeved on the top surface of the rotating block 29, and a driving bevel gear 31 is fixedly connected to the top end of the prism 30. A driven bevel gear 32 is meshed and connected to the outer surface of the driving bevel gear 31. One end of a second rotating shaft 33 is fixedly connected to the central axis of the driven bevel gear 32. The other end of the second rotating shaft 33 is provided with an internal thread 34, and an engaging block 35 is meshed and sleeved on the internal thread 34. A baffle 36 is fixedly connected to the side wall of the engaging block 35.

[0035] See also Figure 5 A plurality of fan blades 25 are provided, and the plurality of fan blades 25 are evenly distributed about the central axis of the first rotating shaft 24 , the transmission shaft 28 is rotatably sleeved with the punch 6 , and the rotating block 29 is rotatably sleeved with the top surface of the punch 6 .

[0036] See also Figure 3 and Figure 6 The prism 30 , the driving bevel gear 31 , the driven bevel gear 32 and the second rotating shaft 33 are all rotatably sleeved with the top mold 8 , the engagement block 35 and the baffle 36 are slidably sleeved with the top mold 8 , and the baffle 36 extends into the second flow channel 12 .

[0037] See also Figure 6 The end of the internal thread 34 has an annular groove, and the width of the annular groove is the same as the width of the engaging block 35. A spring is fixedly connected between the side wall of the engaging block 35 and the top mold 8, and a torsion spring is fixedly connected between the outer surface of the second rotating shaft 33 and the top mold 8.

[0038] See also Figure 8 The rotating block 29 drives the second rotating shaft 33 to rotate through the prism 30, the driving bevel gear 31 and the driven bevel gear 32, and the second rotating shaft 33 drives the meshing block 35 and the baffle 36 to translate through the internal thread 34.

[0039] Specifically, when the cooling water enters the first cooling channel 21, the cooling water will drive the fan blades 25 to rotate, so that the fan blades 25 drive the first rotating shaft 24 to rotate, and the lead angle of the worm 27 is greater than the equivalent friction angle between the meshing gear teeth of the worm wheel 26, so that the worm 27 and the worm wheel 26 are not self-locking, so that the worm wheel 26 on the first rotating shaft 24 drives the worm 27 to rotate, so that the worm 27 drives the rotating block 29 to rotate through the transmission shaft 28, and then the prism 30 on the rotating block 29 drives the active bevel gear 31 to rotate, so that the driven bevel gear 32 meshing with the active bevel gear 31 drives the second rotating shaft 33 to rotate, and the meshing block 35 is slidably connected with the top mold 8, so that the meshing block 35 cannot rotate, so that the second rotating shaft 33 drives the meshing block 35 to translate through the internal thread 34, so that the baffle 36 on the meshing block 35 It disengages from the second flow channel 12, thereby releasing the seal of the second injection hole 10. When the injection of the soft rubber 38 is completed, cooling water is further introduced to make the engaging block 35 further translate until the engaging block 35 moves into the annular groove. At this time, the internal thread 34 is disengaged from the engaging block 35, and the spring and the torsion spring are both subjected to force until the introduction of cooling water stops. At this time, the spring and the torsion spring return, causing the second rotating shaft 33 to rotate, and the engaging block 35 is re-engaged with the internal thread 34, so that the engaging block 35 and the baffle 36 are reset, and the second injection hole 10 is re-sealed to avoid simultaneous injection of raw materials. This not only avoids clogging of the mold, but also allows the product to be formed normally, so that the opening and closing of the injection hole can be automatically controlled according to the production sequence, without the need for sensors and other components to participate in the work, avoiding the failure of electrical components to affect the life of the mold, and also avoiding the difficulty of wiring.

[0040] Example 3: Please refer to Figure 4 , Figure 5 and Fig. 9 The present invention provides a technical solution: a multi-channel multi-color injection mold, a first cooling channel 21 is opened in the punch 6, two water inlets 7 are provided, and the two water inlets 7 are connected with both ends of the first cooling channel 21, a piston is provided between the pull rod 18 and the sleeve 19, an evaporating liquid is provided in the inner cavity 14, the first flow channel 11 is connected with the bottom end of the cavity 13, the second flow channel 12 is connected with the top end of the cavity 13, a hard plastic 37 is formed between the cavity 13 and the mold block 3, and a soft rubber 38 is formed at the top end of the cavity 13.

[0041] Specifically, during the process of introducing cooling water, the faster the flow rate of the cooling water, the faster the opening speed of the second injection hole 10, thereby making the liquid injection efficiency of the soft rubber 38 faster, avoiding the hard plastic 37 from being completely cooled, thereby ensuring the fixation of the soft rubber 38 and the hard plastic 37, and the two can work together without additional control.

[0042] The working principle and use process of the present invention are as follows: when a multi-channel multi-color injection mold is required, the bottom mold 1 and the top mold 8 are installed in a double-material injection molding machine, and the water inlet 7 is connected to an external water pipe. When the mold is closed and the raw material is injected, the liquid of the hard plastic 37 enters the first flow channel 11 through the first injection hole 9, and the first flow channel 11 guides and diverts the liquid, so that the liquid of the hard plastic 37 flows evenly between the cavity 13 and the mold block 3. At this time, as the liquid flows in, the high temperature of the liquid is transmitted to the punch 6, so that the punch 6 heats the evaporating liquid in the inner cavity 14, so that the evaporating liquid vaporizes and enters the sleeve 19 through the connecting channel 20, thereby making the sleeve The air pressure in 19 increases, so that the piston and the pull rod 18 in the sleeve 19 are pressed down, and then the pull rod 18 pushes the mold ring 16 to move, so that the bottom surface of the mold ring 16 is in close contact with the inner surface of the cavity 13, so that the mold ring 16, the cavity 13 and the mold block 3 are filled with the liquid of the hard plastic 37. At this time, the external water pipe is controlled to transport the coolant, so that the coolant enters the punch 6 through the water inlet 7, so as to cool the punch 6 and the mold ring 16 through the first cooling channel 21 and the second cooling channel, so that the hard plastic 37 is initially formed, and the evaporated liquid in the inner cavity 14 is re-condensed, so that the air pressure in the inner cavity 14 is reduced, so that the mold ring 16 is reset;

[0043] During the above process, when the cooling water enters the first cooling channel 21, the cooling water will drive the fan blades 25 to rotate, so that the fan blades 25 drive the first rotating shaft 24 to rotate, and the lead angle of the worm 27 is greater than the equivalent friction angle between the meshing gear teeth of the worm wheel 26, so that the worm 27 and the worm wheel 26 are not self-locking, so that the worm wheel 26 on the first rotating shaft 24 drives the worm 27 to rotate, so that the worm 27 drives the rotating block 29 to rotate through the transmission shaft 28, and then the prism 30 on the rotating block 29 drives the active bevel gear 31 to rotate, so that the driven bevel gear 32 meshing with the active bevel gear 31 drives the second rotating shaft 33 to rotate, and the meshing block 35 is slidably connected with the top mold 8, so that the meshing block 35 cannot rotate, so that the first rotating shaft 24 is locked. The second rotating shaft 33 drives the meshing block 35 to translate through the internal thread 34, so that the baffle 36 on the meshing block 35 is separated from the second flow channel 12, thereby releasing the seal of the second injection hole 10, so that the liquid of the soft rubber 38 can enter the top of the cavity 13 through the second injection hole 10, so that the soft rubber 38 is formed between the hard plastic 37 and the cavity 13, so that the hard plastic 37 and the soft rubber 38 can be injection molded at one time, saving production time and investment cost. At the same time, the fixation between the hard plastic 37 and the soft rubber 38 can be completed by natural melting, without the need to adopt other connection methods, further saving time and cost, while ensuring the fixing effect of the connection, extending the service life, and ensuring the quality of the product;

[0044] In the above process, when the injection molding of the soft rubber 38 is completed, cooling water is further introduced to make the meshing block 35 further translate until the meshing block 35 moves into the annular groove. At this time, the internal thread 34 is disengaged from the meshing block 35, and the spring and the torsion spring are both stressed until the introduction of cooling water is stopped. At this time, the spring and the torsion spring return, so that the second shaft 33 rotates, and the meshing block 35 re-engages with the internal thread 34, so that the meshing block 35 and the baffle 36 are reset, and the second injection hole 10 is re-sealed to avoid the simultaneous injection of raw materials, which not only avoids the blockage of the mold, but also can form the product normally, so that the opening and closing of the injection hole can be automatically controlled according to the production sequence, without the need for sensors and other components to participate in the work, to avoid the failure of electrical components affecting the life of the mold, and also avoid the difficulty of wiring;

[0045] In the above process, the faster the flow rate of the cooling water, the faster the opening speed of the second injection hole 10, thereby making the liquid injection efficiency of the soft rubber 38 faster, avoiding the hard plastic 37 from being completely cooled, thereby ensuring the fixation of the soft rubber 38 and the hard plastic 37. The two can work together and complete the operation without additional control.

[0046] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A multi-channel multi-color injection mold, characterized in that: The invention comprises a bottom mold (1), the top surface of the bottom mold (1) is fixedly connected to a cavity mold (2), the top surface of the cavity mold (2) is fixedly connected to a mold block (3), and the top surface of the cavity mold (2) is provided with a guide groove (4), a guide rod (5) is slidably sleeved in the guide groove (4), a punch (6) is fixedly connected to the top end of the guide rod (5), both sides of the punch (6) are provided with water inlets (7), and the top surface of the punch (6) is fixedly connected to a top mold (8), the top surface of the top mold (8) is provided with a first injection hole (9) and a second injection hole (10), and the punch (6) is connected to the top mold (8) and is provided with a first injection hole (9) and a second injection hole (10). A first flow channel (11) and a second flow channel (12), the bottom surface of the punch (6) is provided with a cavity (13), the inside of the punch (6) is provided with an inner cavity (14), the inner top surface of the cavity (13) is provided with an annular groove (15), a mold ring (16) is sleeved in the annular groove (15), a second cooling channel is arranged in the mold ring (16), and a guide tube (17) and a pull rod (18) are fixedly connected to the top surface of the mold ring (16), a sleeve (19) is slidably sleeved on the top end of the pull rod (18), and a connecting channel (20) is connected between the top end of the sleeve (19) and the inner cavity (14); The punch (6) is provided with a first cooling channel (21), two water inlets (7) are provided, and the two water inlets (7) are connected to both ends of the first cooling channel (21), a piston is provided between the pull rod (18) and the sleeve (19), an evaporating liquid is provided in the inner cavity (14), the first flow channel (11) is connected to the bottom end of the cavity (13), the second flow channel (12) is connected to the top end of the cavity (13), a hard plastic (37) is formed between the cavity (13) and the mold block (3), and a soft rubber (38) is formed at the top end of the cavity (13); The conduit (17) is in communication with a first cooling channel (21), the first cooling channel (21) is connected in parallel with a second cooling channel, a plurality of the tie rods (18) and the sleeves (19) are provided, and the plurality of tie rods (18) and the plurality of sleeves (19) are evenly distributed about the central axis of the mold ring (16); An expansion cavity (22) is provided at the inlet end of the first cooling channel (21), a fixing frame (23) is fixedly connected to the end surface of the expansion cavity (22), two fixing frames (23) are provided, and a first rotating shaft (24) is rotatably connected between the two fixing frames (23), one end of the first rotating shaft (24) is fixedly connected to a fan blade (25), the other end of the first rotating shaft (24) is fixedly connected to a worm wheel (26), the outer surface of the worm wheel (26) is meshingly connected to a worm (27), the lead angle of the worm (27) is greater than the equivalent friction angle between meshing teeth of the worm wheel (26), and the top surface of the worm (27) is fixedly connected to a transmission shaft ( The transmission shaft (28) is provided with a rotating block (29) at one end thereof, the other end of the transmission shaft (28) is fixedly connected to a rotating block (29), a prism (30) is sleeved and engaged on the top surface of the rotating block (29), a driving helical gear (31) is fixedly connected to the top end of the prism (30), a driven helical gear (32) is meshed and engaged on the outer surface of the driving helical gear (31), one end of a second rotating shaft (33) is fixedly connected to the central axis of the driven helical gear (32), the other end of the second rotating shaft (33) is provided with an internal thread (34), a meshing block (35) is meshed and sleeved on the internal thread (34), and a baffle (36) is fixedly connected to the side wall of the meshing block (35).

2. A multi-channel multi-color injection mold according to claim 1, characterized in that: The inner cavity (14) surrounds the bottom end of the mold cavity (13); the bottom end of the second flow channel (12) is in an inclined ring shape; and the bottom end of the first flow channel (11) is in an umbrella rib shape.

3. The multi-channel multi-color injection mold according to claim 1, characterized in that: A plurality of the fan blades (25) are provided, and the plurality of fan blades (25) are evenly distributed about the central axis of the first rotating shaft (24); the transmission shaft (28) is rotatably sleeved with the punch (6); and the rotating block (29) is rotatably sleeved with the top surface of the punch (6).

4. The multi-channel multi-color injection mold according to claim 1, characterized in that: The prism (30), the driving bevel gear (31), the driven bevel gear (32) and the second rotating shaft (33) are all rotatably sleeved with the top mold (8), the engagement block (35) and the baffle plate (36) are slidably sleeved with the top mold (8), and the baffle plate (36) extends into the second flow channel (12).

5. The multi-channel multi-color injection mold according to claim 1, characterized in that: The end of the internal thread (34) has an annular groove, and the width of the annular groove is the same as the width of the engagement block (35). A spring is fixedly connected between the side wall of the engagement block (35) and the top mold (8), and a torsion spring is fixedly connected between the outer surface of the second rotating shaft (33) and the top mold (8).

6. The multi-channel multi-color injection mold according to claim 1, characterized in that: The rotating block (29) drives the second rotating shaft (33) to rotate via the prism (30), the driving bevel gear (31) and the driven bevel gear (32); the second rotating shaft (33) drives the meshing block (35) and the baffle (36) to translate via the internal thread (34).

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