Pressure equalizing and flow dividing structure of multi-cavity injection mold

Abstract

The pressure equalizing and flow dividing structure comprises a mold body and a flow dividing mechanism, the flow dividing mechanism is arranged above the mold body, the flow dividing mechanism comprises a flow guide plate and two flow dividing plates, the two flow dividing plates are both fixed to the side wall of the flow guide plate, the top of the flow guide plate is fixedly connected with a material injection box, and the material injection box is fixedly connected with the mold body. A material injection head is arranged on the material injection box, a material cavity is formed in the guide plate, first sub-runners are arranged on the two sides of the material cavity, second sub-runners are arranged on the two splitter plates, one ends of the second sub-runners are communicated with the first sub-runners, and the other ends of the second sub-runners are communicated with the mold body. According to the pressure-equalizing and flow-dividing structure of the multi-cavity injection mold, the whole runner can be divided into two main runners, the two main runners form a complete runner structure, feed liquid can quickly pass through the runner, discharging is uniform, pressure loss is reduced, and the pressure-equalizing and flow-dividing structure is suitable for the multi-cavity mold.

Description

Technical Field

[0001] The invention relates to the field of injection mold related products, in particular to a pressure equalizing and flow diversion structure of a multi-cavity injection mold. Background Art

[0002] In the process of product production and injection molding, in order to improve the efficiency of product injection molding, it is usually necessary to use one injection molding machine to simultaneously mold multiple products. When using multiple molds to mold products, it is necessary to divert the rubber output by the injection molding machine. The existing runner uses a main flow channel for diversion during injection molding, which easily leads to uneven discharge of hot runner and pressure loss. In addition, the existing injection mold cannot limit the flow rate of the material liquid during the injection molding process and has a single function. Summary of the invention

[0003] The object of the present invention is to provide a pressure equalizing and flow diverting structure for a multi-cavity injection mold to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pressure-equalizing and diverting structure of a multi-cavity injection mold, comprising a mold body and a diverting mechanism, wherein the diverting mechanism is arranged above the mold body, and the diverting mechanism comprises a guide plate and two diverting plates, wherein the two diverting plates are fixed on the side walls of the guide plate, and the top of the guide plate is fixedly connected to a material injection box, wherein a material injection head is arranged on the material injection box, and a material cavity is arranged on the guide plate, and first diverting channels are arranged on both sides of the material cavity, and second diverting channels are arranged on the two diverting plates, wherein one end of the second diverting channel is connected to the first diverting channel, and the other end of the second diverting channel is connected to the mold body, and a collecting trough connected to the first diverting channel and the second diverting channel is arranged on the mold body, and a plurality of The bottom of the mold body is provided with a material hole connected with multiple pressure relief grooves, both sides of the diversion mechanism are fixedly connected with an insert plate, the outer wall of the mold body is fixedly connected with a support block, the insert plate is slidably inserted on the support block, the bottom of the support block is fixedly connected with a support frame, the bottom of the support frame is rotatably inserted with a threaded rod, the bottom of the insert plate is provided with a screw groove corresponding to the threaded rod, the bottom of the threaded rod is fixedly connected with a rotating block, the outer walls of both sides of the injection box are fixedly connected with a supporting frame, the supporting frame is slidably connected with a push plate, one side of the push plate is fixedly connected with an arc adjustment plate, the side wall of the injection box is provided with a through hole corresponding to the arc adjustment plate, and a second spring is fixedly connected between one side of the push plate and the injection box.

[0005] Preferably, a partition plate is fixedly connected in the material cavity, and the top end of the partition plate is arranged in a conical structure.

[0006] Preferably, a stop rod is slidably inserted into one end of the rotating block, and a plurality of stop grooves corresponding to the stop rod are provided at the bottom of the supporting frame.

[0007] Preferably, a bearing is installed on the support frame, and the threaded rod is fixedly inserted in the bearing.

[0008] Preferably, one end of the stop rod is fixedly connected to an anti-drop block, and a first spring is sleeved on the stop rod, and two ends of the first spring are respectively against the anti-drop block and the rotating block.

[0009] Preferably, the top of the supporting frame is provided with a through opening corresponding to the push plate, the top of the push plate passes through the through opening, and a groove is provided on the top side wall of the push plate. A sliding rod is fixedly connected in the groove, and an L-shaped stop plate is slidably sleeved on the sliding rod, and the L-shaped stop plate is clamped on the outer wall of the supporting frame.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The pressure-equalizing and diverting structure of the multi-cavity injection mold can divert the entire flow channel into two main channels. The two main channels form a complete flow channel structure, which allows the material liquid to pass through the flow channel quickly, discharge the material evenly, reduce pressure loss, and is suitable for multi-cavity molds. The pressure-equalizing and flow-dividing structure of the multi-cavity injection mold forms a narrower flow channel by fitting two arc-shaped adjustment plates, and can adjust the feed area of ​​the liquid material, thereby facilitating the change of the size of the flow surface of the feed channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the pressure equalization and flow diversion structure of the multi-cavity injection mold of the present invention; Figure 2 It is an enlarged view of point A of the pressure-equalizing and flow-dividing structure of the multi-cavity injection mold of the present invention; Figure 3 It is a schematic diagram of the collecting trough of the pressure equalizing and flow diversion structure of the multi-cavity injection mold of the present invention; Figure 4 It is a schematic diagram of the material hole of the pressure equalization and flow diversion structure of the multi-cavity injection mold of the present invention; Figure 5 It is an enlarged view of the B portion of the pressure-equalizing and flow-dividing structure of the multi-cavity injection mold of the present invention; Figure 6 It is a schematic diagram of the structure of the arc-shaped adjustment plate of the pressure-equalizing and flow-dividing structure of the multi-cavity injection mold of the present invention.

[0012] In the figure: 1. mold body; 2. diverter mechanism; 3. guide plate; 4. diverter plate; 5. injection box; 6. injection head; 7. material cavity; 8. first diverter channel; 9. second diverter channel; 10. plug plate; 11. support block; 12. support frame; 13. threaded rod; 14. rotating block; 15. partition plate; 16. stop rod; 17. bearing; 18. anti-slip block; 19. first spring; 20. collecting trough; 21. pressure relief groove; 22. material hole; 23. bearing frame; 24. push plate; 25. arc adjustment plate; 26. second spring; 27. slide rod; 28. L-shaped stop plate. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0014] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] See also Figure 1-6, the embodiment provided by the present invention: a pressure-equalizing and diverting structure of a multi-cavity injection mold, comprising a mold body 1 and a diverting mechanism 2, the diverting mechanism 2 is arranged above the mold body 1, the diverting mechanism 2 comprises a guide plate 3 and two diverting plates 4, the two diverting plates 4 are fixed on the side walls of the guide plate 3, the top of the guide plate 3 is fixedly connected to a material injection box 5, the material injection box 5 is provided with a material injection head 6, the guide plate 3 is provided with a material cavity 7, both sides of the material cavity 7 are provided with a first diverting channel 8, the two diverting plates 4 are provided with a second diverting channel 9, one end of the second diverting channel 9 is connected to the first diverting channel 8, and the other end of the second diverting channel 9 is connected to the mold body 1, the mold body 1 is provided with The collecting trough 20 is connected with the first branch channel 8 and the second branch channel 9, and a plurality of connected pressure relief grooves 21 are arranged on one side of the collecting trough 20. The bottom of the mold body 1 is provided with material holes 22 connected with the plurality of pressure relief grooves 21. Specifically, the injection head 6 injects material into the material cavity 7 on the guide plate 3, and the material in the material cavity 7 is introduced into the second branch channel 9 through the first branch channel 8, and then enters the mold body 1 through the second branch channel 9 to realize the injection. At the same time, the second branch channel 9 directs the material flow to the collecting trough 20 in the mold body 1, disperses the material liquid through the plurality of pressure relief grooves 21, and then realizes the discharge through the plurality of material holes 22; both sides of the diversion mechanism 2 are A plug plate 10 is fixedly connected, a support block 11 is fixedly connected to the outer side wall of the mold body 1, the plug plate 10 is slidably inserted on the support block 11, a support frame 12 is fixedly connected to the bottom of the support block 11, a threaded rod 13 is rotatably inserted at the bottom of the support frame 12, a screw groove corresponding to the threaded rod 13 is provided at the bottom of the plug plate 10, and a rotating block 14 is fixedly connected to the bottom of the threaded rod 13. Specifically, the installation of the diverter mechanism 2 is performed by inserting the plug plate 10 into the support block 11, at which time the screw groove on the plug plate 10 is sleeved on the threaded rod 13, and the installation and fixation between the diverter mechanism 2 and the mold body 1 is achieved by rotating the threaded rod 13 and gradually screwing it into the screw groove; injection A supporting frame 23 is fixedly connected to the outer walls of both sides of the box 5, and a push plate 24 is slidably connected inside the supporting frame 23. An arc-shaped adjustment plate 25 is fixedly connected to one side of the push plate 24. A through hole corresponding to the arc-shaped adjustment plate 25 is provided on the side wall of the injection box 5. A second spring 26 is fixedly connected between one side of the push plate 24 and the injection box 5. Specifically, by installing the arc-shaped adjustment plate 25 inside the supporting frame 23, the rebound tension of the second spring 26 can be used to promote the movement of the push plate 24. The two relatively arranged arc-shaped adjustment plates 25 are pressed and contacted. At this time, a middle hole is formed in the middle of the two arc-shaped adjustment plates 25, and the feed liquid falls through the middle hole, which can effectively reduce the speed of the feed liquid.

[0017] In this embodiment, a partition plate 15 is fixedly connected to the material chamber 7, and the top of the partition plate 15 is a conical structure, which is convenient for separating from the middle when unloading; a stop rod 16 is slidably inserted at one end of the rotating block 14, and a plurality of stop grooves corresponding to the stop rod 16 are provided at the bottom of the support frame 12. The stop rod 16 is inserted into the stop groove to realize the rotation and fixation of the rotating block 14; a bearing 17 is installed on the support frame 12, and the threaded rod 13 is fixedly inserted in the bearing 17 to support the threaded rod 13; an anti-slip block 18 is fixedly connected to one end of the stop rod 16, and a first spring 19 is sleeved on the stop rod 16, and the two ends of the first spring 19 are respectively against the anti-slip block 18 and the rotating block 14, and the first The rebound force of the spring 19 causes the stop rod 16 to be firmly clamped in the stop groove; a through hole corresponding to the push plate 24 is provided on the top of the supporting frame 23, and the top of the push plate 24 passes through the through hole. A groove is provided on the top side wall of the push plate 24, and a slide rod 27 is fixedly connected in the groove. An L-shaped stop plate 28 is slidably sleeved on the slide rod 27. The L-shaped stop plate 28 is clamped on the outer wall of the supporting frame 23, and one end of the L-shaped stop plate 28 is fixed to the push plate 24, and the other end is clamped on the supporting frame 23. The position of the push plate 24 can be fixed by using the L-shaped stop plate 28, and the slide rod 27 slidingly supports the L-shaped stop plate 28 to realize the opening and closing of the L-shaped stop plate 28 and the supporting frame 23.

[0018] Working principle: The material is injected into the material cavity 7 on the guide plate 3 through the injection head 6, and the material in the material cavity 7 is introduced into the second branch channel 9 through the first branch channel 8. At the same time, the second branch channel 9 flows the material into the collecting tank 20 in the mold body 1, and the material liquid is dispersed through multiple pressure relief grooves 21, and then discharged through multiple material holes 22; The installation of the flow dividing mechanism 2 is achieved by inserting the insert plate 10 into the support block 11. At this time, the screw groove on the insert plate 10 is sleeved on the threaded rod 13. The threaded rod 13 is gradually screwed into the screw groove to achieve the installation and fixation between the flow dividing mechanism 2 and the mold body 1. The arc-shaped adjustment plate 25 installed inside the bearing frame 23 can utilize the rebound pulling force of the second spring 26 to cause the push plate 24 to move. The two relatively arranged arc-shaped adjustment plates 25 are pressed and contacted. At this time, a middle hole is formed in the middle of the two arc-shaped adjustment plates 25. The slurry falls through the middle hole, which can effectively reduce the speed of the slurry.

[0019] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A pressure-equalizing and flow-dividing structure for a multi-cavity injection mold, comprising a mold body (1) and a flow-dividing mechanism (2), characterized in that: The flow dividing mechanism (2) is arranged above the mold body (1), and comprises a guide plate (3) and two flow dividing plates (4). The two flow dividing plates (4) are fixed on the side walls of the guide plate (3). The top of the guide plate (3) is fixedly connected to a material injection box (5). The material injection box (5) is provided with a material injection head (6). The guide plate (3) is provided with a material cavity (7). Both sides of the material cavity (7) are provided with a first flow dividing channel (8). The two flow dividing plates (4) is provided with a second branch channel (9), one end of the second branch channel (9) is connected to the first branch channel (8), and the other end of the second branch channel (9) is connected to the mold body (1), the mold body (1) is provided with a collection trough (20) connected to the first branch channel (8) and the second branch channel (9), one side of the collection trough (20) is provided with a plurality of connected pressure relief grooves (21), the bottom of the mold body (1) is provided with a material hole (22) connected to the plurality of pressure relief grooves (21), both sides of the diversion mechanism (2) are fixedly connected with a plug plate (10), the outer side wall of the mold body (1) is fixedly connected with a support block (11), the plug plate (10) is slidably inserted on the support block (11), the bottom of the support block (11) is fixedly connected with a support frame (12), the bottom of the support frame (12) is rotatably inserted with a threaded rod (13), the bottom of the plug plate (10) is provided with a screw groove corresponding to the threaded rod (13), the threaded rod (13) is rotatably inserted into the bottom of the plug plate (10), and the threaded rod (13) is rotatably inserted into the bottom of the plug plate (10). A rotating block (14) is fixedly connected to the bottom of the rod (13), and a supporting frame (23) is fixedly connected to the outer walls on both sides of the injection box (5). A push plate (24) is slidably connected inside the supporting frame (23), and an arc-shaped adjustment plate (25) is fixedly connected to one side of the push plate (24). A through hole corresponding to the arc-shaped adjustment plate (25) is provided on the side wall of the injection box (5), and a second spring (26) is fixedly connected between one side of the push plate (24) and the injection box (5).

2. The pressure equalization and flow diversion structure of a multi-cavity injection mold according to claim 1, characterized in that: A partition plate (15) is fixedly connected inside the material cavity (7), and the top end of the partition plate (15) is arranged in a conical structure.

3. The pressure equalization and flow diversion structure of the multi-cavity injection mold according to claim 1, characterized in that: A stop rod (16) is slidably inserted into one end of the rotating block (14), and a plurality of stop grooves corresponding to the stop rod (16) are provided at the bottom of the supporting frame (12).

4. The pressure equalization and flow diversion structure of a multi-cavity injection mold according to claim 1, characterized in that: A bearing (17) is mounted on the support frame (12), and the threaded rod (13) is fixedly inserted in the bearing (17).

5. The pressure equalization and flow diversion structure of a multi-cavity injection mold according to claim 1, characterized in that: One end of the stop rod (16) is fixedly connected to an anti-drop block (18), and a first spring (19) is sleeved on the stop rod (16), with two ends of the first spring (19) respectively abutting against the anti-drop block (18) and the rotating block (14).

6. The pressure equalization and flow diversion structure of a multi-cavity injection mold according to claim 1, characterized in that: The top of the supporting frame (23) is provided with a through opening corresponding to the push plate (24), the top end of the push plate (24) passes through the through opening, and the top side wall of the push plate (24) is provided with a groove, a slide rod (27) is fixedly connected in the groove, and an L-shaped stop plate (28) is slidably sleeved on the slide rod (27), and the L-shaped stop plate (28) is clamped on the outer wall of the supporting frame (23).

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