In-mold hot runner temperature balance precision plastic mold

Abstract

The utility model discloses an in-mold hot runner temperature balance precise plastic mold, which relates to the field of plastic molds and comprises a fixed block fixedly connected to the upper side of a bearing bottom plate and an embedded frame plate clamped to the inner side of the fixed block, two groups of connecting rods are fixedly connected to the two inner walls of the embedded frame plate, and a splitter plate is fixedly connected among the four groups of connecting rods. An injection molding head penetrating through the fixed block is fixedly connected to the middle of the splitter plate, four sets of discharging nozzles are clamped to the splitter plate, a fixed mold block is arranged on one side of the fixed block, a first motor is fixedly clamped to the inner side of the fixed block, a first lead screw shaft is fixedly connected to the output end of the first motor, and a movable plate is connected to the first lead screw shaft in a sleeving mode. Compared with the prior art, the hot runner discharging nozzle has the advantages that the function of uniformly heating the hot runner discharging nozzle is realized, so that the temperature of the discharging nozzle is always kept balanced, the quality of a plastic product is favorably improved, the dislocation and clamping conditions of the movable module and the fixed module in the mold closing process can be avoided, and the stable mold closing function of a plastic mold is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plastic mould, especially in -mold hot runner temperature balance precision plastic mould. BACKGROUND

[0002] The in-mold hot runner temperature balance precision plastic mould is a high-end injection mould that realizes efficient flow and precise temperature control of molten plastic through a built-in heating system. Its core objective is to maintain the dynamic balance of the runner temperature during the molding process to ensure the consistency of the plastic part quality.

[0003] The patent with publication number CN217621677U discloses a precision mould for plastic product forming, which adopts an embedded groove, pulls the model groove out of the embedded groove, and thus the model groove can be disassembled for easy demolding and cleaning. The positioning rod is fixed inside the positioning cylinder, which drives the lower mould and the upper mould to be positioned and assembled together. However, the temperature of each discharge nozzle of the in-mold hot runner of the plastic mould is prone to inconsistency and unevenness during use, which may cause quality problems of the plastic products. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide an in-mold hot runner temperature balance precision plastic mould. The temperature of each discharge nozzle of the in-mold hot runner of the existing plastic mould is prone to inconsistency and unevenness during use, which may cause quality problems of the plastic products.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows: the in-mold hot runner temperature balance precision plastic mould comprises a fixed block fixed on the upper side of a bearing bottom plate, an embedded frame plate clamped on the inner side of the fixed block, two groups of connecting rods fixedly connected to the two inner walls of the embedded frame plate, a flow divider fixedly connected between the four groups of connecting rods, an injection head fixedly connected to the fixed block in the middle of the flow divider, and four groups of discharge nozzles clamped on the flow divider.

[0006] One side of the fixed block is provided with a positioning module, a first motor is fixedly installed on the inner side of the fixed block, a first screw shaft is fixedly connected to the output end of the first motor, a moving plate is sleeved on the first screw shaft, a limiting rod is fixedly connected to the inner side of the fixed block, four groups of connecting plates are fixedly connected to the moving plate, and a heating ring is fixedly connected to the other end of the connecting plate.

[0007] As a further scheme of the utility model, the embedded frame plate is in the shape of a mouth-shaped type, the corners of the positioning module are fixedly connected with connecting rods penetrating through the fixed block, the end of the connecting rod is threadedly connected with a nut, and the four groups of nuts are located on the outer side of the fixed block.

[0008] As a further scheme of the utility model: the first screw rod axle is connected with the moving plate through screw thread, and the moving plate is movably connected with the limiting rod, and the first screw rod axle is located directly above the limiting rod.

[0009] As a further scheme of the utility model: four groups of the heating rings are symmetrically arranged relative to the moving plate, and the heating rings are sleeved outside the discharge nozzles, and the four groups of the discharge nozzles are located inside the fixed module.

[0010] As a further scheme of the utility model: a second screw rod axle is arranged through the bearing base, a moving block is sleeved on the second screw rod axle, a sliding groove is arranged in the middle of the bearing base, and a movable module is fixedly connected to the upper side of the moving block.

[0011] The corners of the movable module are fixedly connected with guide columns, the end of the guide column is provided with a first end, and the corners of the fixed module are fixedly embedded with guide sleeves, and the end of the guide sleeve is provided with a second end.

[0012] As a further scheme of the utility model: a second motor is fixedly embedded on one side of the bearing base, and the second screw rod axle is fixedly connected to the output end of the second motor, the second screw rod axle is connected with the moving block through screw thread, and the moving block is located inside the sliding groove.

[0013] As a further scheme of the utility model: the guide column is movably connected with the guide sleeve, and the first end and the second end are designed as curved surfaces.

[0014] Compared with the prior art, the utility model has the advantages that the first motor on the fixed block is started to drive the first screw rod axle to rotate, so that the moving plate is driven to move along the limiting rod through the screw thread connection between the first screw rod axle and the moving plate, and four groups of heating rings are driven to reciprocatingly move along four groups of discharge nozzles under the cooperation of the connecting plate, so that the uniform heating function of the hot runner discharge nozzle is realized, the temperature of the discharge nozzle is kept balanced at all times, and the quality of the plastic product is improved.

[0015] Compared with the prior art, the utility model has the advantages that the second motor on the bearing base is started to drive the second screw rod axle to rotate, so that the moving block is driven to move along the sliding groove through the screw thread connection between the second screw rod axle and the moving block, and the movable module is driven to move to the fixed module, and four groups of guide columns are inserted into four groups of guide sleeves under the cooperation of the first end and the second end, so that the misalignment and jamming of the movable module and the fixed module during the mold closing process are avoided, and the stable mold closing function of the plastic mold is realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic view of the precision plastic mold with the temperature balance of the hot runner in the mold in the utility model embodiment.

[0017] Figure 2 It is the inside structure schematic view of fixed block in the utility model embodiment;

[0018] Figure 3 It is the connection structure schematic view of shunt plate in the utility model embodiment;

[0019] Figure 4 It is the connection structure schematic view of fixed module and movable module in the utility model embodiment;

[0020] Figure 5 It is the connection structure schematic view of bearing base plate and movable module in the utility model embodiment.

[0021] In the drawing: 1, bearing base plate;2, fixed block;3, fixed module;4, connecting rod;5, nut;6, movable module;7, injection head;8, shunt plate;9, connecting rod;10, frame plate;11, discharge nozzle;12, first motor;13, first screw shaft;14, moving plate;15, limit rod;16, connecting plate;17, heating ring;18, guide column;19, first end;20, second motor;21, second screw shaft;22, moving block;23, sliding slot;24, guide sleeve;25, second end. DETAILED DESCRIPTION

[0022] The specific embodiments of the utility model will be further described below in conjunction with the drawings. It needs to be explained here that the description of these embodiments is used to help understanding the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Embodiment 1, please refer to Figures 1-5 , in-mold hot runner temperature balance precision plastic mold, including the fixed block 2 of being fixed on the upper side of bearing base plate 1, still including the frame plate 10 of being clamped in the inner side of fixed block 2, two inner walls of frame plate 10 are all fixedly connected with two groups of connecting rods 9, four groups of connecting rods 9 are fixedly connected with shunt plate 8, the injection head 7 of fixed block 2 is fixedly connected in the middle of shunt plate 8, and four groups of discharge nozzles 11 are clamped on shunt plate 8, one side of fixed block 2 is provided with fixed module 3, the inner side of fixed block 2 is clamped and is installed with first motor 12, the output end of first motor 12 is fixedly connected with first screw shaft 13, first screw shaft 13 is sleeved with moving plate 14, the inner side of fixed block 2 is fixedly connected with limit rod 15, four groups of connecting plates 16 are fixedly connected on moving plate 14, and the other end of connecting plate 16 is fixedly connected with heating ring 17.

[0024] In the embodiment, the first motor 12 can be forward and reverse.

[0025] The shape of the frame plate 10 is arranged in a mouth-shaped manner, the corners of the fixed mold block 3 are fixedly connected with the connecting rods 4 penetrating through the fixed block 2, the end portions of the connecting rods 4 are threadedly connected with the nuts 5, and the four groups of nuts 5 are located on the outer side of the fixed block 2.

[0026] In the embodiment, the fixed mold block 3 is clamped with the fixed block 2 through the cooperation of the four groups of connecting rods 4 and the four groups of nuts 5.

[0027] The first screw rod shaft 13 is threadedly connected with the moving plate 14, and the moving plate 14 is movably connected with the limiting rod 15, and the first screw rod shaft 13 is located directly above the limiting rod 15.

[0028] In the embodiment, the moving plate 14 is moved through the thread connection between the first screw rod shaft 13 and the moving plate 14.

[0029] The four groups of heating rings 17 are symmetrically arranged about the moving plate 14, the heating rings 17 are sleeved on the outer side of the discharge nozzle 11, and the four groups of discharge nozzles 11 are located on the inner side of the fixed mold block 3.

[0030] In the embodiment, the discharge nozzle 11 is heated through the heating ring 17.

[0031] Specifically, the first motor 12 on the fixed block 2 is started to drive the first screw rod shaft 13 to rotate, so that the moving plate 14 is driven to move along the limiting rod 15 through the thread connection between the first screw rod shaft 13 and the moving plate 14, and then the four groups of heating rings 17 are driven to reciprocate along the four groups of discharge nozzles 11 through the cooperation of the connecting plate 16, thereby realizing the uniform heating function of the hot runner discharge nozzle 11, ensuring that the temperature of the discharge nozzle 11 always remains balanced, and helping to improve the quality of the plastic product.

[0032] Embodiment 2, please refer to Figures 1-5 , the in-mold hot runner temperature balancing precision plastic mold, the second screw rod shaft 21 is penetratingly arranged on the bearing base plate 1, the moving block 22 is sleeved on the second screw rod shaft 21, the middle of the bearing base plate 1 is provided with a sliding groove 23, the upper side of the moving block 22 is fixedly connected with the movable mold block 6, the corners of the movable mold block 6 are fixedly connected with the guide columns 18, the end portions of the guide columns 18 are provided with the first end heads 19, the corners of the fixed mold block 3 are clamped and embedded with the guide sleeves 24, and the end portions of the guide sleeves 24 are provided with the second end heads 25.

[0033] The second motor 20 is clamped and embedded on one side of the bearing base plate 1, the second screw rod shaft 21 is fixedly connected to the output end of the second motor 20, the second screw rod shaft 21 is threadedly connected with the moving block 22, and the moving block 22 is located on the inner side of the sliding groove 23.

[0034] In the embodiment, the second motor 20 can be forward and reverse rotated.

[0035] The guide posts 18 are movably connected with the guide sleeves 24, and the first end heads 19 and the second end heads 25 are designed as curved surfaces

[0036] In the embodiment, the movable mold module 6 is connected with the fixed mold module 3 through the cooperation of the guide posts 18 and the guide sleeves 24.

[0037] Specifically, the second motor 20 on the bearing bottom plate 1 is started to drive the second screw shaft 21 to rotate, so as to drive the moving block 22 to move along the sliding groove 23 through the threaded connection between the second screw shaft 21 and the moving block 22, and then drive the movable mold module 6 to move to the fixed mold module 3. At this time, the four groups of guide posts 18 are inserted into the four groups of guide sleeves 24 under the cooperation of the first end heads 19 and the second end heads 25, so as to avoid the misalignment and jamming of the movable mold module 6 and the fixed mold module 3 during the mold closing process, and realize the stable mold closing function of the plastic mold.

[0038] The embodiments of the utility model are described in detail above with reference to the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. An in-mold hot runner temperature balancing precision plastic mold, comprising a fixed block (2) fixed on the upper side of a bearing bottom plate (1), characterized in that: Also include the frame plate (10) is clamped in the fixed block (2) inside, two inner walls of the frame plate (10) are fixedly connected with two groups of connecting rods (9), four groups of the connecting rods (9) are fixedly connected with the shunt plate (8), the middle of the shunt plate (8) is fixedly connected with the injection head (7) penetrating the fixed block (2), and four groups of the discharge nozzle (11) are clamped on the shunt plate (8); One side of the fixed block (2) is provided with a fixed module (3), the inner side of the fixed block (2) is clamped and mounted with a first motor (12), the output end of the first motor (12) is fixedly connected with a first screw shaft (13), the first screw shaft (13) is sleeved with a moving plate (14), the inner side of the fixed block (2) is fixedly connected with a limiting rod (15), four groups of connecting plates (16) are fixedly connected on the moving plate (14), and the other end of the connecting plate (16) is fixedly connected with a heating ring (17).

2. The in-mold hot-runner temperature-balanced precision plastic mold of claim 1, wherein: The shape of the frame plate (10) is arranged in a mouth-shaped type, the corners of the fixed module (3) are fixedly connected with the connecting rod (4) penetrating the fixed block (2), the end of the connecting rod (4) is threadedly connected with the nut (5), and the four groups of nuts (5) are located on the outside of the fixed block (2).

3. The in-mold hot-runner temperature-balanced precision plastic mold of claim 1, wherein: The first screw shaft (13) is threadedly connected with the moving plate (14), and the moving plate (14) is movably connected with the limiting rod (15), and the first screw shaft (13) is located directly above the limiting rod (15).

4. The in-mold hot-runner temperature-balanced precision plastic mold of claim 1, wherein: Four groups of the heating ring (17) are symmetrically arranged about the moving plate (14), and the heating ring (17) is sleeved on the outside of the discharge nozzle (11), and four groups of the discharge nozzle (11) are located on the inside of the fixed module (3).

5. The in-mold hot-runner temperature-balanced precision plastic mold of claim 1, wherein: The second screw shaft (21) is arranged through the bearing base plate (1), the second screw shaft (21) is sleeved with a moving block (22), the middle of the bearing base plate (1) is provided with a sliding groove (23), and the upper side of the moving block (22) is fixedly connected with a movable module (6); The corners of the movable module (6) are fixedly connected with a guide column (18), the end of the guide column (18) is provided with a first end (19), the corners of the fixed module (3) are clamped and embedded with a guide sleeve (24), and the end of the guide sleeve (24) is provided with a second end (25).

6. The in-mold hot-runner temperature-balanced precision plastic mold of claim 5, wherein: One side of the bearing base plate (1) is clamped and embedded with a second motor (20), and the second screw shaft (21) is fixedly connected to the output end of the second motor (20), the second screw shaft (21) is threadedly connected with the moving block (22), and the moving block (22) is located on the inside of the sliding groove (23).

7. The in-mold hot-runner temperature-balanced precision plastic mold of claim 5, wherein: The guide column (18) is movably connected with the guide sleeve (24), and the first end (19) and the second end (25) are both designed as curved surfaces.

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