Hot runner mold

Abstract

The utility model relates to the technical field of molds, and discloses a hot runner mold which is characterized in that a mold cavity is formed in a mold body, a material injection opening is fixedly formed in the front surface of the mold body, and a sealing cover is detachably mounted on the outer wall of the top of the mold body; a fixing box is fixedly installed on the outer wall of the bottom of the mold body, a heating assembly is arranged in the mold body, and the heating assembly comprises a circulating pump, a heating wire, a connecting pipe, a communicating pipe, a concentric-square-shaped pipe and a spiral belt. According to the hot runner mold, the heating assembly is arranged, when the circulating pump is started, heat conduction oil in a loop formed by the connecting pipe, the communicating pipe and the concentric-square-shaped pipe continuously flows, heat is transferred into the mold body, the high temperature is kept in the mold cavity, and therefore after materials are injected into the mold cavity, the forming time difference does not occur; therefore, the forming quality of the workpiece is influenced, and the production effect of the device is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, concretely is a hot runner mould. BACKGROUND

[0002] At present, the magnesium material is heated by the material pipe in the semi-solid machine, and the maximum setting of the mold temperature machine relative to the mold heating is about 300 DEG, and the actual temperature is within 240 DEG, which makes the mold surface temperature fluctuate greatly, and the forming efficiency of the workpiece in the mold is affected, therefore, the hot runner mold is generally used in the prior art.

[0003] According to a hot runner mould (announcement number: CN219563996U) disclosed, in the above application, the cooperation of the micro pump, the electric control valve, the electric heater and the heating solution is set to heat the heating solution by the electric heater, so that the micro pump and the electric control valve form an effective circulation, and then the liquid is used to replace the traditional direct heating in the heating process, so that the uniformity of heating can be ensured, and the energy consumption can be effectively reduced.

[0004] But the above-mentioned equipment in the actual use process, the mold with hot runner is heated by heating wire, and the heat near the heating wire is much larger than that far away from the heating wire when the fluid is heated, which makes the heating effect of the whole mold have certain limitation; In view of this, we propose a hot runner mould. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a hot runner mould to solve the problems in the above background technology.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a hot runner mould, comprising a mould body, a mould cavity is arranged in the inside of the mould body, a material injection port is fixedly installed on the front surface of the mould body, a sealing cover is detachably installed on the top outer wall of the mould body, a fixed box is fixedly installed on the bottom outer wall of the mould body, and a heating assembly is arranged in the inside of the mould body.

[0007] Among them, the heating assembly comprises a circulating pump, the circulating pump is fixedly installed on the inner wall of the fixed box, the inner wall of the fixed box is fixedly installed with a heating wire, the output end of the circulating pump is fixedly connected with a connecting pipe, one end of the connecting pipe away from the circulating pump is fixedly installed with a communicating pipe, the end of the communicating pipe is fixedly connected with a return bend, and the arc-shaped inner wall of the communicating pipe is fixedly installed with a spiral belt.

[0008] Preferably, the injection port is connected with the inside of the mold cavity, and the bottom end of the sealing cover is the same size as the top end of the mold cavity, so that the workpiece in the mold cavity can be discharged through the opening of the sealing cover when the sealing cover is opened.

[0009] Preferably, the inside of the fixed box is provided with a power supply device, and the power supply device is electrically connected with the circulating pump and the heating wire, so as to supply power to the circulating pump and the heating wire when the power supply device is started.

[0010] Preferably, the heating wire is spirally arranged outside the connecting pipe, and the connecting pipe is arranged in a U shape near the output end of the circulating pump, and the heating wire is sleeved outside the U-shaped section, so that the heating wire can fully heat the medium in the connecting pipe.

[0011] Preferably, the number of the connecting pipes is provided with several groups, and the connecting pipes are connected by the U-shaped pipes, and the two groups of connecting pipes are mirror image arranged on both sides of the U-shaped pipe, so as to form a connected pipeline loop in the inside of the mold body.

[0012] Preferably, the inside of the connecting pipe, the communicating pipe and the U-shaped pipe is filled with heat conducting oil.

[0013] Preferably, the spiral belt is spirally arranged, and the number of the spiral belts is provided with multiple groups, and the multiple groups of spiral belts are uniformly distributed on the arc-shaped inner wall of the communicating pipe in a spiral line array, so that the heat conducting oil will be affected by the spiral belt and produce spiral flow when being upwardly conveyed when passing through the communicating pipe.

[0014] Compared with the prior art, the hot runner mold has the following beneficial effects:

[0015] 1. The hot runner mold, by setting the heating assembly, when the circulating pump is started, the heat conducting oil in the loop formed by the connecting pipe, the communicating pipe and the U-shaped pipe continuously flows, so as to transfer heat to the mold body, so that the temperature in the mold cavity is kept high, so that the material after being injected into the mold cavity will not appear forming time difference, thereby affecting the forming quality of the workpiece, and reducing the production effect of the device.

[0016] 2. The hot runner mold, by setting multiple groups of spiral belts in the communicating pipe, the heat conducting oil will be affected by the spiral belt and produce spiral flow when being upwardly conveyed when passing through the communicating pipe, the spiral flow of the outside of the heat conducting oil makes the heat conducting oil near the center of the communicating pipe further exchange heat with the heat conducting oil on the outside, so that the heat exchange efficiency of the heating assembly for the mold body is higher, so that the heating effect is better, and the deformation or shrinkage hole of the workpiece during forming is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the main body structure schematic view of the utility model;

[0018] Figure 2 It is the mold body sectional structure schematic view of the utility model;

[0019] Figure 3 It is the Luer tube sectional structure schematic view of the utility model;

[0020] Figure 4 It is the communicating pipe sectional structure schematic view of the utility model.

[0021] In the drawing: 1, mold body;11, fixed box;2, mold cavity;21, injection port;3, sealing cover;4, heating assembly;41, circulating pump;42, heating wire;43, connecting pipe;44, communicating pipe;45, Luer tube;46, spiral belt. Specific implementation

[0022] As Figures 1-4 Indicated, the utility model provides a technical scheme: a hot runner mold, including mold body 1, the inside of mold body 1 is set with mold cavity 2, the front of mold body 1 is fixedly installed with injection port 21, the top outer wall of mold body 1 is detachably installed with sealing cover 3, the bottom outer wall of mold body 1 is fixedly installed with fixed box 11, the inside of mold body 1 is provided with heating assembly 4, and heating assembly 4 includes circulating pump 41, heating wire 42, connecting pipe 43, communicating pipe 44 and Luer tube 45 and spiral belt 46.

[0023] In an embodiment of the utility model, circulating pump 41 is fixedly installed on the inner wall of fixed box 11, and the inner wall of fixed box 11 is fixedly installed with heating wire 42, and the output end of circulating pump 41 is fixedly connected with connecting pipe 43, one end of connecting pipe 43 away from circulating pump 41 is fixedly installed with communicating pipe 44, and the end of communicating pipe 44 is fixedly connected with Luer tube 45, and the arc-shaped inner wall of communicating pipe 44 is fixedly installed with spiral belt 46.

[0024] Further, injection port 21 is connected with the inside of mold cavity 2 in penetration, and the bottom end size of sealing cover 3 is same with the top end size of mold cavity 2, which makes the workpiece in mold cavity 2 can be discharged through the opening of sealing cover 3 when sealing cover 3 is opened, to realize the work of demolding.

[0025] In addition, the fixed box 11 is fixedly installed at the bottom of the mold body 1, and the circulating pump 41 and the heating wire 42 are arranged in the fixed box 11, and the inside of the fixed box 11 is provided with a power supply device, and the power supply device is electrically connected with the circulating pump 41 and the heating wire 42, and the power supply device can supply power for the circulating pump 41 and the heating wire 42 when the power supply device is started, specifically, the heating wire 42 is arranged in a spiral shape outside the connecting pipe 43, and the connecting pipe 43 is arranged in a U shape near the output end of the circulating pump 41, and the heating wire 42 is sleeved outside the U-shaped section, so that the heating wire 42 can fully heat the medium in the connecting pipe 43, thereby improving the heating effect of the mold body 1 and reducing the heat loss in the workpiece forming process.

[0026] In the embodiment of the utility model, the number of connecting pipes 43 is two groups, and the bottom ends of the two groups of connecting pipes 43 are fixedly connected with the output end and the input end of the circulating pump 41, and the number of communication pipes 44 is several groups, and the connecting pipes 44 between the several groups are connected by the L-shaped pipes 45, and the two groups of connecting pipes 43 are mirror image arranged on the two sides of the L-shaped pipe 45, so as to form a communicating pipeline loop in the inside of the mold body 1, specifically, the inside of the connecting pipe 43, the communication pipe 44 and the L-shaped pipe 45 is filled with heat conducting oil, and the heat conducting oil is used as a transport medium to uniformly transmit heat to the mold body 1, and through the arrangement of the plurality of L-shaped pipes 45 in the mold body 1, the heat exchange area between the pipeline and the mold body 1 is large enough, so that the mold body 1 can not lose too much heat during the workpiece forming process, and the forming quality of the workpiece is affected.

[0027] Specifically, the spiral belt 46 is arranged in a spiral shape, and the number of the spiral belt 46 is multiple groups, and the multiple groups of spiral belts 46 are uniformly distributed on the arc-shaped inner wall of the communication pipe 44 in a spiral line array, so that the heat conducting oil will be affected by the spiral belt 46 when passing through the communication pipe 44 and produce spiral flow when conveying upward, and the spiral flow of the outside of the heat conducting oil makes the heat conducting oil near the center of the communication pipe 44 further exchange heat with the heat conducting oil outside, so that the heat exchange efficiency of the heating assembly 4 for the mold body 1 is higher, and the heating effect is better, and the workpiece is not deformed or shrunk during forming.

[0028] In the utility model, when using, the power supply equipment in fixed box 11 is started to start heating wire 42, and circulating pump 41 is started at the same time to make the heat transfer oil in the loop formed by connecting pipe 43, communicating pipe 44 and backshaped pipe 45 continuously flow to transmit heat to mould body 1 to make the temperature in mould cavity 2 keep high, so that the material after injecting into mould cavity 2 does not appear forming time difference, thereby influencing the forming quality of workpiece and reducing the production effect of the device, after heating for a certain time, the material is injected through injection port 21 to make it form in mould cavity 2, and finally the workpiece product is obtained.

[0029] The utility model has been described in detail above, but some modifications or improvements can be made on the basis of the utility model, which is obvious to the general technical personnel in the technical field. Therefore, the modifications or improvements without departing from the utility model idea spirit are within the protection scope of the utility model.

Claims

1. A hot runner mold, comprising a mold body (1), an inside of the mold body (1) is provided with a mold cavity (2), a front surface of the mold body (1) is fixedly provided with a material injection port (21), and a sealing cover (3) is detachably installed on an outer wall of a top of the mold body (1), characterized in that: The bottom outer wall of the mold body (1) is fixedly installed with a fixed box (11), and the inside of the mold body (1) is provided with a heating assembly (4); The heating assembly (4) comprises a circulating pump (41) fixedly installed on the inner wall of the fixed box (11), the inner wall of the fixed box (11) is fixedly installed with a heating wire (42), the output end of the circulating pump (41) is fixedly connected with a connecting pipe (43), one end of the connecting pipe (43) away from the circulating pump (41) is fixedly installed with a communicating pipe (44), the end of the communicating pipe (44) is fixedly connected with a return pipe (45), and the arc-shaped inner wall of the communicating pipe (44) is fixedly installed with a spiral belt (46).

2. A hot runner mold according to claim 1, characterized in that: The injection port (21) is in through connection with the inside of the mold cavity (2), and the bottom end of the sealing cover (3) is the same size as the top end of the mold cavity (2).

3. A hot runner mold in accordance with claim 1 wherein: The inside of the fixed box (11) is provided with a power supply device, and the power supply device is electrically connected with the circulating pump (41) and the heating wire (42).

4. The hot runner mold according to claim 1, wherein: The heating wire (42) is spirally arranged on the outside of the connecting pipe (43), and the connecting pipe (43) is arranged in a U shape near the output end of the circulating pump (41), and the heating wire (42) is sleeved outside the U-shaped section.

5. A hot runner mold in accordance with claim 1 wherein: The number of the communicating pipes (44) is provided with several groups, the connecting pipes (44) between the several groups are connected by the return pipes (45), and the two groups of connecting pipes (43) are mirror image arranged on the two sides of the return pipe (45).

6. A hot runner mold in accordance with claim 1 wherein: The inside of the connecting pipe (43), the communicating pipe (44) and the return pipe (45) is filled with heat conducting oil.

7. A hot runner mold in accordance with claim 1 wherein: The spiral belt (46) is spirally arranged, and the number of the spiral belt (46) is provided with multiple groups, and the multiple groups of spiral belts (46) are spirally and evenly distributed on the arc-shaped inner wall of the communicating pipe (44).

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