Efficient optical precision injection mold temperature control system

Abstract

The utility model relates to the technical field of optical precision injection molds, and discloses an efficient optical precision injection mold temperature control system which comprises a rectifier and a power line. The direct-current positive and negative rotation solid-state relay is electrically connected to Peltier temperature control equipment through a power line, a heat dissipation device is arranged on the top of the Peltier temperature control equipment, a fixed mold core is arranged outside the Peltier temperature control equipment, and an insert is arranged on the upper portion of the fixed mold core; and one end of the ventilation pipeline is fixedly connected to the output end of the air blower. According to the utility model, the direct current rectified by the rectifier is introduced into the electric copper sheet through the direct current positive and negative rotation solid-state relay, so that the problem of non-uniform product shrinkage due to limited heat transfer performance of water and oil in the prior art and scheme such as water and oil circulation temperature control is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical precision injection mold technical field, concretely is efficient optical precision injection mold temperature control system. BACKGROUND

[0002] In order to efficiently control the temperature of optical precision mold, the mold temperature needs to be quickly raised in the polymer filling and pressure maintaining stage, thereby solving the problem of melt wavefront cold material, and the mold temperature needs to be quickly reduced in the cooling stage, thereby saving product forming cycle and improving efficiency.

[0003] The existing technology and scheme have water, oil circulation temperature control and the like, and due to the limited heat transfer performance of water and oil, the cooling speed can be slow, and therefore the problem of uneven product shrinkage is generated. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides efficient optical precision injection mold temperature control system and use method thereof, which solves the problem of uneven product shrinkage caused by the existing technology and scheme of water, oil circulation temperature control and the like due to the limited heat transfer performance of water and oil.

[0005] To achieve the above object, the utility model realizes the following technical scheme: efficient optical precision injection mold temperature control system and use method thereof, including rectifier and power line, the rectifier is electrically connected to the direct current positive and negative rotation solid state relay through the power line, the direct current positive and negative rotation solid state relay is electrically connected to the peltier temperature control equipment through the power line, the top of the peltier temperature control equipment is provided with a heat dissipation device, the outside of the peltier temperature control equipment is provided with a fixed die, the upper portion of the fixed die is provided with an insert.

[0006] Preferably, the heat dissipation device includes a ventilation duct, one end of the ventilation duct is fixedly connected to the output end of the air blower, and the other end of the ventilation duct is located inside the cavity between the insert and the copper sheet.

[0007] Preferably, the peltier temperature control equipment includes copper sheets and NP electrodes, the direct current positive and negative rotation solid state relay is electrically connected to the copper sheets through the power line, and the NP electrodes are fixedly connected between the two copper sheets.

[0008] Preferably, the copper sheet is curved in an arc shape.

[0009] Preferably, the fixed die is provided with four inserts inside.

[0010] Preferably, the top of the fixed die is provided with an injection hole, and a cavity is provided between the upper half and the lower half of the fixed die, and the injection hole is communicated with the cavity.

[0011] Preferably, the cavity side wall between the insert and the copper sheet is provided with a through hole penetrating the fixed mold core.

[0012] Preferably, a plurality of NP electrodes are fixedly connected between the two copper sheets.

[0013] Preferably, the power line is made of a polytetrafluoroethylene material.

[0014] Working principle: S1, use Moldflow to optimize the molding of optical products, get the best mold closing time t1, filling time t2, holding time t3, cooling time t4, mold opening and ejection time t5, input the obtained time into the injection molding machine and the direct current positive and negative solid state relay, use the rectifier to convert alternating current into direct current, then connect the direct current positive and negative solid state relay, unify the time beat, the injection molding machine drives the fixed mold core to close the mold, lasts t1, when the fixed mold core is in the filling and holding stage, switch the current direction to heat the bottom surface of the peltier temperature control device, this process lasts t2+t3, when the mold is in the cooling stage, switch the current direction through the direct current positive and negative solid state relay to cool the bottom surface of the peltier temperature control device, this process lasts t4, the top of the peltier temperature control device heats up in this stage, the air blower blows natural air into the cavity on the top of the peltier temperature control device, and the heat is taken away through the through hole penetrating the fixed mold core on the cavity side wall, the fixed mold core is opened, this stage lasts t5, the ejection system is started to demold the product, and thus a mold production cycle is completed.

[0015] The utility model provides high efficiency's optical precision injection mold temperature control system and use method, possess following beneficial effect:

[0016] In the utility model, the direct current of the rectifier is passed to the electric copper sheet through the direct current positive and negative solid state relay, and then the current passes through the NP electrode, so that the copper sheet reaches the effect of rapid heating, and then the copper sheet reaches the effect of rapid cooling by changing the current direction through the direct current positive and negative solid state relay, thereby improving the existing technology and scheme with water and oil circulation temperature control mode, because the heat transfer performance of water and oil is limited, the cooling speed may be slow, and therefore the problem of uneven product shrinkage is generated. ACCURACY OF DRAWINGS

[0017] Figure 1 It is a perspective view of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 It is a sectional view of the utility model.

[0020] Wherein, 1, fixed die; 2, insert; 3, NP electrode; 4, copper sheet; 5, injection hole; 6, ventilation duct; 7, air blower; 8, power cord; 9, DC positive and negative solid-state relay; 10, rectifier. DETAILED DESCRIPTION

[0021] The technical solutions of the utility model will be clearly and completely described below in combination with the drawings of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Embodiment:

[0023] Please refer to the drawings of the utility model Figure 1 - the drawings of the utility model Figure 3 The utility model embodiment provides efficient optical precision injection mold temperature control system and use method thereof, including rectifier 10 and power cord 8, rectifier 10 plays the role of alternating current into direct current, rectifier 10 is electrically connected to DC positive and negative solid-state relay 9 through power cord 8, DC positive and negative solid-state relay 9 plays the role of current positive and negative switching, DC positive and negative solid-state relay 9 is electrically connected to peltier temperature control equipment through power cord 8, peltier temperature control equipment plays the role of giving mold rapid heating and cooling, the top of peltier temperature control equipment is provided with heat dissipation device, heat dissipation device plays the role of taking away the heat of peltier temperature control equipment when peltier temperature control equipment cools down given die 1, the outside of peltier temperature control equipment is provided with fixed die 1, and fixed die 1 plays the role of fixing the size of the mold, and the upper portion of fixed die 1 is provided with insert 2.

[0024] The heat dissipation device includes ventilation duct 6, and the ventilation duct 6 plays the role of conveying airflow, one end of the ventilation duct 6 is fixedly connected to the output end of the air blower 7, the air blower 7 plays the role of generating airflow, and the other end of the ventilation duct 6 is located inside the cavity between the insert 2 and the copper sheet 4, so that the air blower 7 can transport low-temperature airflow to the cavity between the insert 2 and the copper sheet 4 through the ventilation duct 6.

[0025] The peltier temperature control equipment includes copper sheet 4 and NP electrode 3, the copper sheet 4 plays the role of transmitting current and generating temperature, the NP electrode 3 plays the role of transmitting current, the DC positive and negative solid-state relay 9 is electrically connected to the copper sheet 4 through the power cord 8, and the NP electrode 3 is fixedly connected between the two copper sheets 4, so that the current can flow between the copper sheet 4 and the NP electrode 3, thereby enabling the copper sheet 4 to quickly generate high heat and low temperature.

[0026] The copper sheet 4 is bent in an arc shape, so that the mold shape can be adapted, thereby obtaining a better processing effect.

[0027] The fixed die core 1 is internally provided with four inserts 2, so that four molds can be processed at the same time, thereby improving efficiency.

[0028] The fixed die core 1 is internally provided with four inserts 2, so that four molds can be processed at the same time, thereby improving efficiency.

[0029] The cavity side wall between the insert 2 and the copper sheet 4 is provided with a through hole penetrating the fixed die core 1.

[0030] The copper sheet 4 is bent in an arc shape, so that the mold shape can be adapted, thereby obtaining a better processing effect.

[0031] The power line 8 adopts a polytetrafluoroethylene material outer skin, thereby preventing high temperature from damaging the outer skin of the power line 8.

[0032] The efficient optical precision injection mold temperature control system and its use method include the following steps:

[0033] S1, using mold flow analysis software Moldflow to optimize the molding of optical products, obtaining the best mold closing time t1, filling time t2, holding time t3, cooling time t4, and mold opening and ejection time t5;

[0034] S2, input the obtained time into the injection molding machine and the direct current positive and negative solid state relay 9, use the rectifier 10 to convert alternating current into direct current, and then connect the direct current positive and negative solid state relay 9 to unify the time beat;

[0035] S3, the injection molding machine drives the fixed die core 1 to close the mold, lasting t1;

[0036] S4, when the fixed die core 1 is in the filling and holding stage, switch the current flow direction to heat the bottom surface of the Peltier temperature control device, and this process lasts t2+t3;

[0037] S5, when the mold is in the cooling stage, switch the current flow direction through the direct current positive and negative solid state relay 9 to cool the bottom surface of the Peltier temperature control device, and this process lasts t4, and the top of the Peltier temperature control device heats up during this stage. The air blower 7 blows natural air into the cavity on the top of the Peltier temperature control device, and the through hole penetrating the fixed die core 1 is formed in the cavity side wall.

[0038] S6, the fixed die core 1 opens the mold, and this stage lasts t5, and the ejection system is started to demold the product, and thus a mold production cycle ends.

[0039] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An efficient temperature control system for an optical precision injection mold comprising a rectifier (10) and a power cord (8), characterized in that: The rectifier (10) is electrically connected to the DC positive and negative solid-state relay (9) through the power line (8), the DC positive and negative solid-state relay (9) is electrically connected to the Peltier temperature control device through the power line (8), the top of the Peltier temperature control device is provided with a heat dissipation device, the outside of the Peltier temperature control device is provided with a fixed mold root (1), and the upper portion of the fixed mold root (1) is provided with an insert (2).

2. The efficient optical precision injection mold temperature control system of claim 1, wherein: The heat dissipation device comprises a ventilation pipe (6), one end of the ventilation pipe (6) is fixedly connected to the output end of the air blower (7), and the other end of the ventilation pipe (6) is located inside the cavity between the insert (2) and the copper sheet (4).

3. The efficient optical precision injection mold temperature control system of claim 1, wherein: The Peltier temperature control device comprises a copper sheet (4) and an NP electrode (3), the DC positive and negative solid-state relay (9) is electrically connected to the copper sheet (4) through the power line (8), and the NP electrode (3) is fixedly connected between the two copper sheets (4).

4. The efficient optical precision injection mold temperature control system of claim 3, wherein: The copper sheet (4) is curved in a circular arc shape.

5. The efficient optical precision injection mold temperature control system of claim 1, wherein: Four inserts (2) are arranged in the fixed mold root (1).

6. The efficient optical precision injection mold temperature control system of claim 1, wherein: The top of the fixed mold root (1) is provided with an injection hole (5), and a cavity is arranged between the upper half and the lower half of the fixed mold root (1), and the injection hole (5) is communicated with the cavity.

7. The efficient optical precision injection mold temperature control system of claim 1, wherein: Through holes penetrating through the fixed mold root (1) are formed in the cavity side wall between the insert (2) and the copper sheet (4).

8. The efficient optical precision injection mold temperature control system of claim 3, wherein: A plurality of NP electrodes (3) are fixedly connected between the two copper sheets (4).

9. The efficient optical precision injection mold temperature control system of claim 8, wherein: The power line (8) adopts a polytetrafluoroethylene material outer skin.

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