Multicolor injection molding hot runner device

Abstract

The invention relates to the technical field of multi-color injection molding hot runners, and discloses a multi-color injection molding hot runner device which comprises a transverse pipe used for connecting and supporting, a vertical pipe inserted into the transverse pipe in a penetrating mode, a guide pipe used for guiding raw materials and slidably connected to the interior of the vertical pipe, and two sliding plates fixedly welded to the two sides of a plug. The moving direction of the plug is limited. According to the multi-color injection molding hot runner device, when the device is used, two raw materials with different colors need to be heated and melted, the heated and melted raw material pipes are connected into the guide pipes, and when the injection molding raw materials connected with the left guide pipe are used, an electric push rod is controlled to drive a torsion rod to move downwards, drive a connecting pipe to move downwards and drive a guide pipe to move downwards; an electric push rod is controlled to drive a magnet plate to move upwards, so that a guide pipe can move upwards, a runner pipe I is separated from a guide pipe on the left side, a runner pipe II on the right side is communicated with a guide pipe on the right side, the injection molding color is changed, and the effect of injection molding of two colors at the same pouring opening is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-color injection molding hot runner, and specifically relates to a multi-color injection molding hot runner device. Background Art

[0002] A hot runner is a heating component system used in an injection mold to inject molten plastic particles into the cavity of the mold. A hot runner mold is a brand-new structure that heats the sprue and runner of a traditional mold or a three-plate mold, so that the sprue and runner do not need to be removed during each molding. With the development of injection molding technology, more and more plastic products have higher and higher color requirements, and many parts require two-color injection molding or multi-color injection molding; The existing process has the following disadvantages: The same gate cannot simultaneously convert plastics of multiple colors. It can only rotate the product mechanically and inject glue at multiple positions, which will waste a lot of time and result in low production efficiency. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a multi-color injection molding hot runner device to solve the problems mentioned in the above background art.

[0004] To achieve the above object, the present invention provides the following technical solution: A multi-color injection molding hot runner device, comprising: A horizontal pipe for connecting and supporting, and a vertical pipe is inserted through the inside of the horizontal pipe; A conduit for guiding raw materials, and the conduit is slidably connected inside the vertical pipe; A first flow pipe and a second flow pipe, which are opened inside the conduit and used for transporting injection molding raw materials, and the first flow pipe and the second flow pipe are arranged staggeredly; A plug, which is slidably connected inside the vertical pipe and used for blocking the top end of the vertical pipe; Two fixing plates, which are fixedly welded to the top end of the plug; Multiple support rods, which are fixedly welded between the two fixing plates and used for supporting and connecting; Two sliding plates, which are fixedly welded to both sides of the plug and used for restricting the moving direction of the plug; A connecting frame for connecting, which is fixedly welded to the top end of the plug; A magnet plate for adsorption connection, which is fixedly installed on the outside of the plug; A connecting pipe, which is threadedly connected inside the connecting frame and used for connecting and fixing; A lower ring plate, which is fixedly welded to the top end of the connecting pipe and used for splicing and supporting; An upper ring plate, which is movably connected to the outer wall of the lower ring plate and used for supporting and connecting the lower ring plate; Multiple bolts, with multiple of the bolts penetrating through the inside of the lower ring plate and the upper ring plate, for fixing and splicing the upper ring plate and the lower ring plate; A torsion bar, which is fixedly welded to the top of the upper ring plate and is used to push the plug downward; An electric push rod and a mounting plate, the electric push rod is arranged at the top of the torsion bar, and the mounting plate is fixedly installed on the outer wall of the electric push rod; Two guiding pipes, which are fixedly connected to both ends of the horizontal pipe and are used to guide the injection molding raw material; Two heating pipes, which are wound around the outer walls of the two guiding pipes and are used to heat the guiding pipes; A horizontal plate, which is fixedly sleeved on the outer wall of the vertical pipe and is used to connect the support structure; Two connecting guide rods, which are fixedly welded to the outer wall of the horizontal plate; Two draining through pipes, which are slidably connected to the inside of the first flow pipe and the second flow pipe; Multiple sealing rings, with multiple sealing rings fixedly sleeved on the outer wall of the conduit.

[0005] Preferably, it further includes: A first groove and a second groove, two first grooves are opened on the outer wall of the horizontal pipe for storing the heating pipes, A second groove is opened on the outer wall of the vertical pipe for embedding the heating pipe.

[0006] Preferably, the bottom ends of the two guide rods are fixedly welded with a support plate, and the inside of the support plate is fixedly welded to the outer walls of the two through pipes.

[0007] Preferably, rubber pads are fixedly sleeved on the outer walls of the two through pipes, and the outer walls of the two rubber pads are respectively slidably connected to the first flow pipe and the second flow pipe.

[0008] Preferably, the outer walls of the two sliding plates are fixedly installed on the outer wall of the magnet plate, and the outer walls of the two sliding plates are slidably connected to the inside of the fixing plate.

[0009] Preferably, it further includes: A flow cavity, which is opened inside the horizontal pipe, and the inside of the two guiding pipes is communicated with the inside of the flow cavity.

[0010] Preferably, the first flow pipe and the second flow pipe are correspondingly arranged with the inside of the flow cavity, and the first flow pipe and the second flow pipe are symmetrically arranged inside the conduit.

[0011] Preferably, the outer walls of the plurality of sealing rings are slidably connected to the inner wall of the vertical pipe, and a clamping groove is formed in the outer wall of the vertical pipe, and the clamping groove is arranged in a threaded shape.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. For this multi-color injection molding hot runner device, when in use, two raw materials of different colors need to be heated and melted. After the heated and melted raw material pipes are connected into the guiding pipe, when using the injection molding raw material connected to the left guiding pipe, control the electric push rod to drive the torsion rod to move downward, drive the connecting pipe to move downward, drive the conduit to move downward, and drive the sliding plate to move downward. At this time, the position of the conduit is as shown in Figure 2 shown. The flow pipe one inside the conduit is correspondingly arranged with the inner side of the guiding pipe. The injection molding raw material inside the left guiding pipe is supplied into the communicating pipe one. If it is necessary to change the injection molding color, control the electric push rod to drive the torsion rod to move upward, drive the magnet plate to move upward, so that the conduit can move upward. At this time, the flow pipe one is separated from the left guiding pipe, and the flow pipe two on the right is communicatively arranged with the right guiding pipe. At this time, the injection molding color can be changed to achieve the effect of injecting two colors at the same pouring port.

[0013] 2. For this multi-color injection molding hot runner device, when the conduit moves upward, the sealing ring moves with it. When the conduit moves upward, the flow pipe one inside it also moves upward. The through pipe and the support plate are fixedly connected together to achieve the effect of increasing the internal space of the through pipe and the flow pipe one, and can indirectly avoid the falling of materials and affect the injection molding after color change.

[0014] 3. For this multi-color injection molding hot runner device, the connecting frame and the connecting pipe can be separated, and the bolts arranged inside the upper ring plate and the lower replacement plate can be disassembled to achieve the effect of convenient disassembly and assembly. Description of the Drawings

[0015] Figure 1 is a three-dimensional schematic diagram of the structure of the present invention; Figure 2 is a front sectional schematic diagram of the structure of the present invention; Figure 3 is a three-dimensional schematic diagram of the connecting plate and its related structures of the present invention; Figure 4 is a three-dimensional schematic diagram of the conduit and its related structures of the present invention; Figure 5 is a three-dimensional schematic diagram of the guiding pipe and its related structures of the present invention; Figure 6 is the structure of the present invention Figure 2 in the enlarged schematic diagram at A; Figure 7 is the structure of the present invention Figure 5 in the enlarged schematic diagram at B; Figure 8 is the structure of the present inventionFigure 3 Enlarged schematic diagram at position C in the middle.

[0016] In the figure: 1, horizontal pipe; 2, vertical pipe; 3, conduit; 4, first flow pipe; 5, second flow pipe; 6, plug; 7, fixed plate; 8, support rod; 9, sliding plate; 10, connecting frame; 11, magnet plate; 12, connecting pipe; 13, lower ring plate; 14, upper ring plate; 15, bolt; 16, torsion bar; 17, electric push rod; 18, mounting plate; 19, guiding pipe; 20, heating pipe; 21, horizontal plate; 22, guide rod; 23, through pipe; 24, sealing ring. Specific implementation mode

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment: Please refer to FIGS. 1-8 in combination, A multi-color injection molding hot runner device, comprising: A horizontal pipe 1 for connecting and supporting, and a vertical pipe 2 is inserted through the inside of the horizontal pipe 1; A conduit 3 for guiding raw materials, and the conduit 3 is slidably connected inside the vertical pipe 2; A first flow pipe 4 and a second flow pipe 5, the first flow pipe 4 and the second flow pipe 5 are opened inside the conduit 3 for transporting injection molding raw materials, and the first flow pipe 4 and the second flow pipe 5 are arranged staggeredly; A plug 6, the plug 6 is slidably connected inside the vertical pipe 2 for blocking the top end of the vertical pipe 2; Two fixed plates 7, and the two fixed plates 7 are fixedly welded to the top end of the plug 6; A plurality of support rods 8, and the plurality of support rods 8 are fixedly welded between the two fixed plates 7 for supporting and connecting; Two sliding plates 9, and the two sliding plates 9 are fixedly welded to both sides of the plug 6 for restricting the moving direction of the plug 6; A connecting frame 10 for connecting, and the connecting frame 10 is fixedly welded to the top end of the plug 6; A magnet plate 11 for adsorbing and connecting, and the magnet plate 11 is fixedly installed on the outside of the plug 6; A connecting pipe 12, which is threadedly connected inside the connecting frame 10 for connecting and fixing; A lower ring plate 13, which is fixedly welded to the top end of the connecting pipe 12 for splicing and supporting; An upper ring plate 14, which is movably connected to the outer wall of the lower ring plate 13 for supporting and connecting the lower ring plate 13; Multiple bolts 15 are arranged through the inside of the lower ring plate 13 and the upper ring plate 14 for fixing and splicing the upper ring plate 14 and the lower ring plate 13; A torsion bar 16 is fixedly welded to the top end of the upper ring plate 14 for pushing the plug 6 downward; An electric push rod 17 and a mounting plate 18, the electric push rod 17 is arranged at the top end of the torsion bar 16, and the mounting plate 18 is fixedly installed on the outer wall of the electric push rod 17; Two guiding pipes 19 are fixedly connected to both ends of the horizontal pipe 1 for guiding the injection molding raw material; Two heating pipes 20 are wound around the outer walls of the two guiding pipes 19 for heating the guiding pipes 19; A horizontal plate 21 is fixedly sleeved on the outer wall of the vertical pipe 2 for connecting the support structure; Two connecting guide rods 22 are fixedly welded to the outer wall of the horizontal plate 21; Two draining through pipes 23 are slidably connected inside the first flow pipe 4 and the second flow pipe 5; Multiple sealing rings 24 for sealing are fixedly sleeved on the outer wall of the conduit 3; Specifically, when the device is in use, it is necessary to heat and melt two raw materials of different colors. The raw material pipes after heating and melting are connected to the inside of the guiding pipe 19. In the prior art, a pressurizing device or a pump is generally equipped at the end of the raw material pipe to provide power. When the injection molding raw material connected to the left guiding pipe 19 needs to be used, control the electric push rod 17 to operate. The electric push rod 17 will drive the torsion bar 16 downward. The torsion bar 16 will drive the connecting pipe 12 downward. The connecting pipe 12 will drive the plug 6 downward, driving the conduit 3 downward. At this time, when the plug 6 moves downward, it will drive the sliding plate 9 downward. The sliding plate 9 will drive the magnet plate 11 downward. The magnet plate 11 will gradually fit on the lower fixing plate 7, and then the adsorption effect is achieved. At this time, the electric push rod 17 stops moving. At this time, the position of the conduit 3 is as Figure 2 shown. The first flow pipe 4 inside the conduit 3 is correspondingly arranged with the inner side of the guiding pipe 19 to achieve the connection effect. At this time, pressure is applied to the end of the guiding pipe 19, and the injection molding raw material inside the left guiding pipe 19 can be supplied to the inside of the first connecting pipe 23 to achieve the injection molding effect. If it is necessary to change the injection molding color, control the electric push rod 17 to retract, drive the torsion bar 16 upward, drive the magnet plate 11 upward, so that the conduit 3 can move upward. At this time, the first flow pipe 4 is separated from the left guiding pipe 19, and the second flow pipe 5 on the right is connected and arranged with the right guiding pipe 19. At this time, the injection molding color can be changed; When the conduit 3 moves upward, the sealing ring moves along with it. When the conduit 3 moves upward, the inner flow pipe 4 inside it also moves upward. The through pipe 23 and the support plate are fixedly connected together to achieve the effect of increasing the internal space of the through pipe 23 and the flow pipe 4, which can indirectly prevent materials from falling and affecting the injection molding after color change. The connecting frame 10 and the connecting pipe 12 can be separated, and the bolts 15 provided inside the upper ring plate 14 and the lower replacement plate can be disassembled to achieve the effect of convenient disassembly and assembly. In the embodiment: It further includes: The first groove and the second groove. Two first grooves are formed on the outer wall of the horizontal pipe 1 for storing the heating pipe 20. The second groove is formed on the outer wall of the vertical pipe 2 for embedding the heating pipe 20. Specifically, the first groove and the second groove are used to embed the heating pipe 20, which can heat the horizontal pipe 1 and the vertical pipe 2 to achieve the heating effect, and can assist in heating the injection molding raw materials after being drained by the guiding pipe 19 to achieve the heating effect, which can ensure that the guiding pipe 19 is not blocked 6 and ensure the fluidity of the injection molding raw materials. In the embodiment: The bottom ends of the two guide rods 22 are fixedly welded with a support plate, and the inside of the support plate is fixedly welded to the outer walls of the two through pipes 23. Specifically, the bottom end of the guide rod 22 is welded with a support plate to achieve the effect of being fixedly connected to the through pipe 23, and the through pipe 23 can be fixed to the outer walls of the support plate and the guide rod 22, indirectly fixing the through pipe 23 to the outer wall of the vertical pipe 2. In the embodiment: Rubber pads are fixedly sleeved on the outer walls of the two through pipes 23, and the outer walls of the two rubber pads are respectively slidably connected to the flow pipe 4 and the flow pipe 2 5. Specifically, rubber pads are fixedly sleeved on the outer wall of the through pipe 23 to achieve the effect of auxiliary sealing, which can ensure the sealing between the through pipe 23 and the flow pipe 4 and the flow pipe 2 5 and prevent the injection molding raw materials from leaking. In the embodiment: The outer walls of the two sliding plates 9 are fixedly installed on the outer wall of the magnet plate 11, and the outer walls of the two sliding plates 9 are slidably connected to the inside of the fixed plate 7. Specifically, the sliding plate 9 and the magnet plate 11 are fixedly installed together to achieve the effect of synchronous movement, and the outer wall of the sliding plate 9 is slidably connected to the inside of the fixed plate 7 to achieve the effect of preventing rotation, which can indirectly ensure that the lower flow pipe 4 and the flow pipe 2 5 are correspondingly connected to the guiding pipe 19. In the embodiment: It further includes: The flow cavity. A flow cavity is formed inside the horizontal pipe 1, and the inside of the two guiding pipes 19 is communicated with the inside of the flow cavity. Specifically, a flow cavity is provided inside the horizontal pipe 1 for cooperating with the guiding pipe 19 to achieve the feeding effect. The injection molding raw material can be input into the horizontal pipe 1 and finally conveyed into the catheter 3 to complete the injection molding effect. In the embodiment: the first flow pipe 4 and the second flow pipe 5 are correspondingly arranged inside the flow cavity, and the first flow pipe 4 and the second flow pipe 5 are symmetrically arranged inside the catheter 3. Specifically, the first flow pipe 4 and the second flow pipe 5 are correspondingly arranged with the flow cavity to achieve the effect of guiding and flowing the injection molding raw material. The first flow pipe 4 and the second flow pipe 5 are symmetrically arranged for convenient use. In the embodiment: the outer walls of multiple sealing rings 24 are slidably connected to the inner wall of the vertical pipe 2. A clamping groove is provided on the outer wall of the vertical pipe 2, and the clamping groove is arranged in a threaded shape. Specifically, multiple sealing rings 24 are slidably connected to the inner wall of the vertical pipe 2 to achieve the sealing effect. Multiple sealing rings 24 are arranged on both sides of the first flow pipe 4 and the second flow pipe 5 to achieve the auxiliary sealing effect. A clamping groove is provided on the outer wall of the vertical pipe 2, and the clamping groove is arranged in a threaded shape to achieve the effect of conveniently fitting the heating pipe 20. Working principle: When the device is in use, two raw materials of different colors need to be heated and melted. The heated and melted raw material pipes are connected to the inside of the guiding pipe 19. When using the injection molding raw material connected to the left guiding pipe 19, control the electric push rod 17 to drive the torsion rod 16 to move downward, drive the connecting pipe 12 to move downward, drive the catheter 3 to move downward, and drive the slide plate 9 to move downward. At this time, the position of the catheter 3 is as Figure 2 shown. The first flow pipe 4 inside the catheter 3 is correspondingly arranged with the inner side of the guiding pipe 19 to achieve the connection effect. The injection molding raw material inside the left guiding pipe 19 is supplied into the first connecting pipe 23 to achieve the injection molding effect. If the injection molding color needs to be changed, control the electric push rod 17 to drive the torsion rod 16 to move upward, drive the magnet plate 11 to move upward, so that the catheter 3 can move upward. At this time, the first flow pipe 4 is separated from the left guiding pipe 19, and the second flow pipe 5 on the right is connected and arranged with the guiding pipe 19 on the right. At this time, the injection molding color can be changed.

[0019] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-color injection hot runner device, characterized in that: include: A horizontal tube (1) for connecting supports, wherein a vertical tube (2) is inserted through the interior of the horizontal tube (1); A conduit (3) for guiding raw materials, wherein the conduit (3) is slidably connected to the interior of the vertical pipe (2); A flow pipe 1 (4) and a flow pipe 2 (5), wherein the flow pipe 1 (4) and the flow pipe 2 (5) are disposed inside the conduit (3) and are used to transport injection molding raw materials, and the flow pipe 1 (4) and the flow pipe 2 (5) are staggered; A plug (6), the plug (6) being slidably connected to the interior of the vertical pipe (2) and used to block the top end of the vertical pipe (2); Two fixing plates (7), the two fixing plates (7) being fixedly welded to the top of the plug (6); A plurality of support rods (8), wherein the plurality of support rods (8) are fixedly welded between two fixing plates (7) for supporting the connection; Two slide plates (9), the two slide plates (9) are fixedly welded on both sides of the plug (6) and are used to limit the moving direction of the plug (6); A connection frame (10) for connection, wherein the connection frame (10) is fixedly welded to the top of the plug (6); A magnet plate (11) for adsorption connection, wherein the magnet plate (11) is fixedly mounted on the outside of the plug (6); A connecting pipe (12) is threadedly connected to the interior of the connecting frame (10) for connection and fixing; A lower ring plate (13) is fixedly welded to the top of the connecting pipe (12) and is used for splicing support; An upper ring plate (14) movably connected to the outer wall of the lower ring plate (13) and used for supporting and connecting the lower ring plate (13); A plurality of bolts (15), the plurality of bolts (15) being arranged through the interior of the lower ring plate (13) and the upper ring plate (14) and being used to fix and splice the upper ring plate (14) and the lower ring plate (13); A torsion bar (16), the torsion bar (16) is fixedly welded to the top end of the upper ring plate (14) and is used to push the plug (6) downward; An electric push rod (17) and a mounting plate (18), wherein the electric push rod (17) is arranged at the top end of the torsion bar (16), and the mounting plate (18) is fixedly mounted on the outer wall of the electric push rod (17); Two guide pipes (19), the two guide pipes (19) are fixedly connected to the two ends of the transverse pipe (1) and are used to guide the injection molding raw material; Two heating tubes (20), the two heating tubes (20) being arranged around the outer walls of the two guide tubes (19) and used for heating the guide tubes (19); A transverse plate (21), the outer wall of the vertical tube (2) is fixedly sleeved with a transverse plate (21) for connecting to a supporting structure; Two guide rods (22) for connection, the two guide rods (22) being fixedly welded to the outer wall of the transverse plate (21); Two through pipes (23) for drainage, the two through pipes (23) being slidably connected inside the first circulation pipe (4) and the second circulation pipe (5); A plurality of sealing rings (24) for sealing; the outer wall fixed sleeve of the conduit (3) is provided with a plurality of sealing rings (24).

2. A multi-color injection hot runner device according to claim 1, characterized in that: Also includes: Groove 1 and groove 2, the outer wall of the horizontal tube (1) is provided with two grooves 1 for storing the heating tube (20), The outer wall of the vertical tube (2) is provided with a second groove for embedding the heating tube (20).

3. The multi-color injection hot runner device according to claim 1, characterized in that: A support plate is fixedly welded to the bottom ends of the two guide rods (22), and the interior of the support plate is fixedly welded to the outer walls of the two through pipes (23).

4. The multi-color injection hot runner device according to claim 1, characterized in that: The outer walls of the two through pipes (23) are both fixedly sleeved with rubber pads, and the outer walls of the two rubber pads are slidably connected to the circulation pipe 1 (4) and the circulation pipe 2 (5) respectively.

5. The multi-color injection hot runner device according to claim 1, characterized in that: The outer walls of the two slide plates (9) are fixedly mounted together with the outer wall of the magnet plate (11), and the outer walls of the two slide plates (9) are slidably connected to the inside of the fixed plate (7).

6. The multi-color injection hot runner device according to claim 1, characterized in that: Also includes: A circulation cavity, wherein the interior of the transverse tube (1) is provided with a circulation cavity, and the interiors of the two guide tubes (19) are connected to the interior of the circulation cavity and are arranged together.

7. The multi-color injection hot runner device according to claim 1, characterized in that: The flow tube 1 (4) and the flow tube 2 (5) are arranged together in correspondence with the interior of the flow cavity, and the flow tube 1 (4) and the flow tube 2 (5) are symmetrically arranged inside the catheter (3).

8. The multi-color injection hot runner device according to claim 1, characterized in that: The outer walls of the plurality of sealing rings (24) are slidably connected to the inner wall of the vertical pipe (2); the outer wall of the vertical pipe (2) is provided with a snap-fit ​​groove, and the snap-fit ​​groove is arranged in a threaded shape.

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