Detachable hot runner plate structure

Abstract

The utility model discloses a detachable hot runner plate structure which comprises an upper compound plate, a first hot runner frame, a first hot runner plate, a second hot runner plate, a first U-shaped wedge lock and a first wedge plate, the first hot runner frame is fixedly connected with the upper compound plate, the first hot runner plate and the second hot runner plate are arranged in the first hot runner frame, and the first U-shaped wedge lock is fixedly connected with the first U-shaped wedge lock. The first wedge-caulking plate is inserted into the upper compound plate and the first hot runner frame, the wedge surface of the first wedge-caulking plate is tightly wedged with the side inclined surface of the first U-shaped wedge lock, the first hot runner plate is connected with the second hot runner plate through the first U-shaped wedge lock, and wedge-shaped grooves are formed in the side surfaces of the first hot runner plate and the second hot runner plate; and the first U-shaped wedge lock is embedded into the wedge-shaped groove. The hot runner plate disclosed by the utility model is detachable, and the hot runner plate can be conveniently and safely opened and closed on the machine through wedge-caulking connection of the wedge-caulking plate and the U-shaped wedge lock, so that condensed materials can be timely removed on the machine. And arc transition surfaces are arranged at the turning positions of the hot runner, so that accumulated materials can be prevented from being carbonized. And the same-material color changing or material changing flow channel cleaning is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a detachable hot runner plate structure. Background Art

[0002] Hot runner technology is a new technology for plastic injection molding, which can keep the plastic from the injection molding machine nozzle to the injection mold gate in a molten state. It does not need to be solidified and removed as waste each time the mold is opened, and the molten material retained in the pouring system can be injected into the cavity at the next injection, which can greatly improve the quality and production efficiency of injection molded parts. The technical research on PVC hot runner is still in its initial stage, and the technology is still being continuously studied and updated, and is still in the exploratory stage in the world. The advantages of the hot runner structure, saving raw materials and reducing product costs are the most significant features of hot runner molds. It can also be used to process thermosensitive plastics with a narrow temperature range. Generally, open hot runner structures and semi-hot runner structures are used.

[0003] The existing hot runner is usually composed of two hot runner plates, which are usually fixed and connected with screws. When changing colors or materials, the hot runner plate needs to be opened to clean the hot runner. The hot runner plate connected with screws is not easy to disassemble. The machine needs to be stopped and wait for the hot runner plate to be disassembled before removing the condensed material. It is time-consuming, labor-intensive and material-intensive, and the cleaning efficiency is not high. In addition, the injection pressure is high and the material is easy to escape. The turning point of the hot runner is also prone to material accumulation and carbonization, especially when injecting heat-sensitive materials. Utility Model Content

[0004] In view of the above problems, the utility model aims to provide a detachable hot runner plate structure to solve the problem that the hot runner plate is inconvenient to open and close and the hot runner is prone to material accumulation and carbonization.

[0005] The technical problem solved by the utility model can be achieved by adopting the following technical scheme: a detachable hot runner plate structure, comprising an upper composite plate, a first hot runner frame, a first hot runner plate, a second hot runner plate, a first U-shaped wedge lock and a first wedging plate, wherein the first hot runner frame is fixedly connected to the upper composite plate, the first hot runner plate and the second hot runner plate are arranged in the first hot runner frame, the first wedging plate is inserted into the upper composite plate and the first hot runner frame, the wedge surface of the first wedging plate is wedged with the side inclined surface of the first U-shaped wedge lock, and the first hot runner plate and the second hot runner plate are connected by the first U-shaped wedge lock.

[0006] Hot runners are arranged in the first hot runner plate and the second hot runner plate, and arc transition surfaces are arranged at the turning points of the hot runners.

[0007] The sides of the first hot runner plate and the second hot runner plate are provided with wedge-shaped grooves, and the first U-shaped wedge lock is embedded in the wedge-shaped grooves.

[0008] The two ends of the hot runner are respectively connected to the hot nozzle and the hot tip.

[0009] The hot nozzle is connected to the sub-hot runner, and the sub-hot runner is arranged between the first sub-hot runner plate and the second sub-hot runner plate, the first sub-hot runner plate and the second sub-hot runner plate are connected by a second U-shaped wedge lock, the first sub-hot runner plate and the second sub-hot runner plate are arranged in the second hot runner frame, the second wedging plate is inserted into the second hot runner frame, and the wedge surface of the second wedging plate is wedged with the side inclined surface of the second U-shaped wedge lock.

[0010] The outlet end of the branch channel is provided with a heat insulation sleeve.

[0011] Compared with the prior art, the utility model has the following beneficial effects: (1) The hot runner plate of the utility model is detachable, and the wedge connection of the wedge plate and the U-shaped wedge lock replaces the original conventional screw connection method, realizing convenient and safe opening and closing of the hot runner plate on the machine, and the condensed material can be removed in time on the machine to achieve the same material color change or material change and runner cleaning. (2) A smooth semicircular arc transition surface is set at the hot runner bend to prevent the material from carbonizing in the hot runner, especially the heat-sensitive material from carbonizing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the utility model;

[0014] In the figure: 1-hot nozzle; 2-first hot runner plate; 3-second hot runner plate; 4-arc transition surface; 5-first branch hot runner plate; 6-second branch hot runner plate; 7-branch hot runner plate; 8-insulating sleeve; 9-hot nozzle; 10-product; 11-first U-shaped wedge lock; 12-first wedge plate; 13-branch diffusion guide structure and change-direction bend guide structure; 14-upper plate; 15-first hot runner frame; 16-second U-shaped wedge lock; 17-second wedge plate; 18-second hot runner frame; 19-branch hot runner. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0016] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 should not be understood as a limitation on the present invention.

[0017] Combined with Figures 1 to 2 As shown, the present embodiment discloses a detachable hot runner plate structure, comprising an upper composite plate 14, a first hot runner frame 15, a first hot runner plate 2, a second hot runner plate 3, a first U-shaped wedge lock 11 and a first wedging plate 12, wherein the first hot runner frame 15 is fixedly connected to the upper composite plate 14, the first hot runner plate 2 and the second hot runner plate 3 are arranged in the first hot runner frame 15, the first wedging plate is inserted into the upper composite plate 14 and the first hot runner frame 15, the wedge surface of the first wedging plate 12 is wedged with the side inclined surface of the first U-shaped wedge lock 11, the first hot runner plate 2 and the second hot runner plate 3 are connected through the first U-shaped wedge lock 11, the sides of the first hot runner plate 2 and the second hot runner plate 3 are provided with wedge-shaped grooves, and the first U-shaped wedge lock 11 is embedded in the wedge-shaped grooves.

[0018] Hot runners are arranged in the first hot runner plate 2 and the second hot runner plate 3 , and arc transition surfaces 4 are arranged at the turning points of the hot runners to prevent heat-sensitive materials from being accumulated and carbonized in the hot runners.

[0019] The two ends of the hot runner are connected to the hot nozzle 1 and the hot nozzle 9 respectively. The hot nozzle 9 is connected to the branch hot runner. The hot runner is connected to the branch hot runner through the hot nozzle 9 to ensure that the heat is not consumed. A branch diffusion guide structure and a turning bend guide structure 13 are provided between the first branch hot runner plate 5 and the second branch hot runner plate 6. The branch hot runner 19 is arranged between the first branch hot runner plate 5 and the second branch hot runner plate 6. The first branch hot runner plate 5 and the second branch hot runner plate 6 are connected by a second U-shaped wedge lock 16. The first branch hot runner plate 5 and the second branch hot runner plate 6 are arranged in the second hot runner frame 18. The second wedging plate 17 is inserted into the second hot runner frame 18. The wedge surface of the second wedging plate 17 is wedged with the side inclined surface of the second U-shaped wedge lock 16. The outlet end of the branch hot runner 19 is provided with a heat insulation sleeve 8.

[0020] When removing the hot runner plate, pull out the first wedge plate 12, the first U-shaped wedge lock 11 retreats and disengages from the wedge-shaped grooves on the first hot runner plate 2 and the second hot runner plate 3, the first hot runner plate 2 and the second hot runner plate 3 are separated from each other, and the hot runner material replacement and cleaning can be performed. After that, the first hot runner plate 2 and the second hot runner plate 3 are placed in the first hot runner frame, and then the first wedge plate 12 is inserted. The wedge surface of the first wedge plate 12 squeezes the side inclined surface of the first U-shaped wedge lock 11, so that the first U-shaped wedge lock 11 is embedded in the wedge-shaped grooves on the first hot runner plate 2 and the second hot runner plate 3, and the hot runner plate is fixed. When removing the split hot runner plate, pull out the second wedge plate 17, the second U-shaped wedge lock 16 retreats and disengages from the wedge-shaped grooves on the first split hot runner plate 5 and the second split hot runner plate 6, the first split hot runner plate 5 and the second split hot runner plate 6 are separated from each other, and the split hot runner 19 can be cleaned.

[0021] The hot runner plate of the utility model is detachable, and the hot runner plate can be conveniently and safely opened and closed on the machine through the wedging connection of the wedging plate and the U-shaped wedge lock, so that the condensed material can be removed in time on the machine, and the color of the same material or the flow channel cleaning of the material can be realized.

[0022] The above description is only a preferred implementation mode of the utility model, and does not impose any form of limitation on the utility model. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A detachable hot runner plate structure, comprising an upper composite plate (14), a first hot runner frame (15), a first hot runner plate (2), a second hot runner plate (3), a first U-shaped wedge lock (11) and a first wedge locking plate (12), characterized in that: The first hot runner frame (15) is fixedly connected to the upper composite plate (14); the first hot runner plate (2) and the second hot runner plate (3) are arranged in the first hot runner frame (15); the first wedging plate is inserted into the upper composite plate (14) and the first hot runner frame (15); the wedge surface of the first wedging plate (12) is wedged with the side inclined surface of the first U-shaped wedge lock (11); and the first hot runner plate (2) and the second hot runner plate (3) are connected via the first U-shaped wedge lock (11).

2. The detachable hot runner plate structure according to claim 1, characterized in that: Hot runners are arranged in the first hot runner plate (2) and the second hot runner plate (3), and arc transition surfaces (4) are arranged at the turning points of the hot runners.

3. The detachable hot runner plate structure according to claim 1, characterized in that: The side surfaces of the first hot runner plate (2) and the second hot runner plate (3) are provided with wedge-shaped grooves, and the first U-shaped wedge locks (11) are embedded in the wedge-shaped grooves.

4. The detachable hot runner plate structure according to claim 1, characterized in that: The two ends of the hot runner are respectively connected to the hot nozzle (1) and the hot nozzle (9).

5. The detachable hot runner plate structure according to claim 4, characterized in that: The hot nozzle (9) is connected to the sub-hot runner, the sub-hot runner (19) is arranged between the first sub-hot runner plate (5) and the second sub-hot runner plate (6), the first sub-hot runner plate (5) and the second sub-hot runner plate (6) are connected via a second U-shaped wedge lock (16), the first sub-hot runner plate (5) and the second sub-hot runner plate (6) are arranged in a second hot runner frame (18), the second wedging plate (17) is inserted into the second hot runner frame (18), and the wedge surface of the second wedging plate (17) is wedged and locked with the side inclined surface of the second U-shaped wedge lock (16).

6. The detachable hot runner plate structure according to claim 5, characterized in that: A heat insulating sleeve (8) is provided at the outlet end of the heat distribution channel.

Images