Electromagnetic heating injection molding mold

Abstract

The utility model discloses an electromagnetic heating injection molding mold. The electromagnetic heating injection molding mold comprises a rear mold core; the front mold core is arranged at the top of the rear mold core, two forming cavities are formed between the front mold core and the rear mold core, a glue inlet is formed in the top of the front mold core, and the glue inlet is communicated with the two forming cavities; the rear mold electromagnetic heating wire is arranged in the rear mold core; the front mold electromagnetic heating wire is arranged in the rear mold core; the rear mold waterway channel is arranged in the rear mold core; and the front mold waterway channel is arranged in the front mold core. The electromagnetic heating injection molding device adopts an electromagnetic heating injection molding method, solves the limitation of mold temperature on molding conditions, can realize the process switching requirement of rapid cooling and rapid heating of the mold temperature, meets the production of plastic products with extremely cold and rapid heating requirements on the mold temperature, breaks through the temperature limit of a common water temperature heating mold, and enables the molding process window of the plastic products to be wider.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to an electromagnetic heating injection molding mold. Background Art

[0002] The existing mold is heated by the water channel in the mold, and only the water temperature is used to raise the temperature of the mold. The actual mold temperature can only reach about 90 degrees, which is relatively low and cannot meet the use requirements. Summary of the Invention

[0003] According to an embodiment of the utility model, there is provided an electromagnetic heating injection molding mold, comprising:

[0004] A rear mold core;

[0005] A front mold core, which is arranged on the top of the rear mold core. There are two molding cavities between the front mold core and the rear mold core. A glue inlet is arranged on the top of the front mold core, and the glue inlet is communicated with the two molding cavities;

[0006] A rear mold electromagnetic heating wire, which is arranged inside the rear mold core;

[0007] A front mold electromagnetic heating wire, which is arranged inside the rear mold core;

[0008] A rear mold water channel, which is arranged inside the rear mold core;

[0009] A front mold water channel, which is arranged inside the front mold core.

[0010] Further, both the rear mold electromagnetic heating wire and the front mold electromagnetic heating wire are in a serpentine structure.

[0011] Further, the rear mold electromagnetic heating wire comprises: four first vertical segments, which are respectively arranged on both sides inside the rear mold core. There are two first vertical segments on each side inside the rear mold core, and a first horizontal connecting segment is arranged between any two adjacent first vertical segments.

[0012] Further, the front mold electromagnetic heating wire comprises: six second vertical segments, which are respectively arranged on both sides inside the front mold core. There are three second vertical segments on each side inside the front mold core, and a second horizontal connecting segment is arranged between any two adjacent second vertical segments.

[0013] Further, it further comprises:

[0014] A rear mold plate, which is connected to the rear mold core;

[0015] A front mold plate, which is connected to the front mold core.

[0016] Further, it further comprises:

[0017] The rear mold junction box is arranged on one side of the rear template;

[0018] The front mold junction box is arranged on one side of the front template.

[0019] An electromagnetic heating injection molding die according to an embodiment of the present invention adopts an electromagnetic heating injection molding method to solve the limitation of the mold temperature on the molding conditions, can realize the process switching requirements of rapid cooling and heating of the mold temperature, meet the production of plastic products with extremely cold and rapid heating requirements for the mold temperature, break the temperature limit of ordinary water temperature heating molds, make the molding process window of plastic products wider, and improve the production efficiency and product yield.

[0020] It should be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. Brief Description of the Drawings

[0021] Figure 1 It is a schematic cross-sectional structure view of an electromagnetic heating injection molding die according to an embodiment of the present invention.

[0022] Figure 2 It is a schematic three-dimensional structure view of the front and rear mold cores of an electromagnetic heating injection molding die according to an embodiment of the present invention.

[0023] Figure 3 It is a schematic top view structure view of the front and rear mold cores of an electromagnetic heating injection molding die according to an embodiment of the present invention.

[0024] Figure 4 It is a schematic cross-sectional structure view of the front and rear mold cores of an electromagnetic heating injection molding die according to an embodiment of the present invention.

[0025] Figure 5 It is a schematic three-dimensional structure view of the front and rear mold electromagnetic heating wires of an electromagnetic heating injection molding die according to an embodiment of the present invention. Detailed Description of the Embodiments

[0026] Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the drawings, and the present invention will be further elaborated.

[0027] First, an electromagnetic heating injection molding die according to an embodiment of the present invention will be described in conjunction with Figures 1 to 5 It is used for the production of plastic products 9 and has a wide range of application scenarios.

[0028] As Figures 1 to 5 shown, an electromagnetic heating injection molding die according to an embodiment of the present invention includes a rear mold core 1, a front mold core 2, a rear mold electromagnetic heating wire 3, a front mold electromagnetic heating wire 4, a rear mold water channel 5, and a front mold water channel 6.

[0029] Specifically, as Figures 1 to 5 shown, the front mold core 2 is arranged on the top of the rear mold core 1. There are two molding cavities 21 between the front mold core 2 and the rear mold core 1. A glue inlet 22 is arranged on the top of the front mold core 2, and the glue inlet 22 is communicated with the two molding cavities 21.

[0030] Specifically, as Figures 1 to 5 shown, the rear mold electromagnetic heating wire 3 is arranged inside the rear mold core 1; the front mold electromagnetic heating wire 4 is arranged inside the rear mold core 1; both the rear mold electromagnetic heating wire 3 and the front mold electromagnetic heating wire 4 are in a serpentine structure; the rear mold electromagnetic heating wire 3 includes: four first vertical segments 31, and the four first vertical segments 31 are respectively arranged on both sides inside the rear mold core 1. There are two first vertical segments 31 on each side inside the rear mold core 1, and a first horizontal connecting segment 32 is arranged between any two adjacent first vertical segments 31. The front mold electromagnetic heating wire 4 includes: six second vertical segments 41, and the six second vertical segments 41 are respectively arranged on both sides inside the front mold core 2. There are three second vertical segments 41 on each side inside the front mold core 2, and a second horizontal connecting segment 42 is arranged between any two adjacent second vertical segments 41. Through the arrangement of the rear mold electromagnetic heating wire 3 and the front mold electromagnetic heating wire 4, heat is generated through electromagnetic induction, driving the temperature of the mold to rise, and the temperature of the mold can be instantly raised to 300 degrees, achieving the mold temperature required for plastic molding, and solving the limitation that the traditional water temperature heating can only heat the mold temperature to about 90 degrees.

[0031] Specifically, as Figures 1 to 5 shown, the rear mold water channel 5 is arranged inside the rear mold core 1; the front mold water channel 6 is arranged inside the front mold core 2.

[0032] Furthermore, as Figure 1 shown, an electromagnetic heating injection molding mold according to an embodiment of the present invention further includes: a rear template 71 and a front template 72. The rear template 71 is connected to the rear mold core 1; the front template 72 is connected to the front mold core 2. By controlling the closing of the rear template 71 and the front template 72, the closing of the front mold core 2 and the rear mold core 1 is achieved.

[0033] Furthermore, as Figure 1 shown, an electromagnetic heating injection molding mold according to an embodiment of the present invention further includes: a rear mold junction box 81 and a front mold junction box 82. The rear mold junction box 81 is arranged on one side of the rear template 71; the front mold junction box 82 is arranged on one side of the front template 72. The rear mold junction box 81 and the front mold junction box 82 are used for wiring.

[0034] Working principle:

[0035] The injection molding machine closes the mold.

[0036] Water is passed through the front mold core 2 and the rear mold core 1, and the water temperature rises and stabilizes to the set value.

[0037] The front mold electromagnetic heating wire 4 and the rear mold electromagnetic heating wire 3 are powered on.

[0038] After the electromagnetic heating wire is powered on, high heat is generated instantaneously and conducted to the front mold core 2 and the rear mold core 1.

[0039] The temperatures of the front mold core 2 and the rear mold core 1 start to rise, and the temperature of the front and rear mold cores 1 rises to the set plastic molding temperature.

[0040] The injection nozzle of the injection molding machine starts to inject plastic, which enters through the feed inlet 22, and the plastic product 9 is formed in the mold cavity.

[0041] When the molding time of the plastic product 9 counts up to the set time, the front mold electromagnetic heating wire 4 and the rear mold electromagnetic heating wire 3 start to cut off the power.

[0042] After the electromagnetic heating wire cuts off the power, the temperatures of the front mold core 2 and the rear mold core 1 start to drop rapidly driven by the water temperature.

[0043] When the temperature of the front and rear mold cores 1 drops to be consistent with the set water temperature, the plastic product 9 starts to cool.

[0044] When the cooling time reaches the set time, the injection molding machine opens the mold and takes out the plastic product 9.

[0045] After taking out the plastic product 9, the injection molding machine starts to close the mold and starts to produce the plastic product 9 in the next cycle.

[0046] As above, with reference to Figures 1 to 5 A kind of electromagnetic heating injection molding mold according to the embodiment of the present utility model is described. By adopting the electromagnetic heating injection molding method, the limitation of the mold temperature on the molding conditions is solved, the process switching requirement of rapid cooling and heating of the mold temperature can be realized, the production of plastic products 9 with extremely cold and hot requirements for the mold temperature can be satisfied, the temperature limit of the ordinary water temperature heating mold is broken, the molding process window of the plastic products 9 is wider, and the production efficiency and the product yield are improved.

[0047] It should be noted that in this specification, the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the process, method, article or device including the said elements.

[0048] Although the content of the present utility model has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be construed as a limitation of the present utility model. After those skilled in the art have read the above content, various modifications and substitutions of the present utility model will be obvious. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims

1. An electromagnetic heating injection molding die, characterized in that, Comprising: Rear mold core; Front mold core, the front mold core is arranged on the top of the rear mold core, two molding cavities are arranged between the front mold core and the rear mold core, a glue inlet is arranged on the top of the front mold core, and the glue inlet is communicated with the two molding cavities; Rear mold electromagnetic heating wire, the rear mold electromagnetic heating wire is arranged inside the rear mold core; Front mold electromagnetic heating wire, the front mold electromagnetic heating wire is arranged inside the rear mold core; Rear mold water channel, the rear mold water channel is arranged inside the rear mold core; Front mold water channel, the front mold water channel is arranged inside the front mold core.

2. The electromagnetic heating injection molding die according to claim 1, characterized in that, Both the rear mold electromagnetic heating wire and the front mold electromagnetic heating wire are in a serpentine structure.

3. The electromagnetic heating injection molding die according to claim 1 or 2, characterized in that, The rear mold electromagnetic heating wire comprises: four first vertical segments, the four first vertical segments are respectively arranged on both sides inside the rear mold core, there are two first vertical segments on each side inside the rear mold core, and a first horizontal connecting segment is arranged between any two adjacent first vertical segments.

4. The electromagnetic heating injection molding die according to claim 1 or 2, characterized in that, The front mold electromagnetic heating wire comprises: six second vertical segments, the six second vertical segments are respectively arranged on both sides inside the front mold core, there are three second vertical segments on each side inside the front mold core, and a second horizontal connecting segment is arranged between any two adjacent second vertical segments.

5. The electromagnetic heating injection molding die according to claim 1, characterized in that Also comprising: Rear template, the rear template is connected to the rear mold core; Front template, the front template is connected to the front mold core.

6. The electromagnetic heating injection molding die according to claim 5, characterized in that, Also comprising: Rear mold junction box, the rear mold junction box is arranged on one side of the rear template; Front mold junction box, the front mold junction box is arranged on one side of the front template.

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