Injection mold with temperature sensing component

Abstract

The utility model discloses an injection mold with a temperature sensing component, and relates to the technical field of molds. The structure of the utility model comprises an upper mold base, a lower mold base, a mold cavity, a temperature controller, an ejection mechanism and a fixed base. When the upper mold base and the lower mold base are closed, a mold cavity is formed. A heating element and a temperature sensor are arranged inside the upper mold base, and a temperature controller is installed on the outer side of the upper mold base. A cooling system is arranged inside the lower mold base. A limit rod is fixedly connected to the top of the fixed base, a top plate groove is opened in the middle of the top of the fixed base, an ejector groove is opened in the center of the top plate groove, and an ejection mechanism is slidably connected in the top plate groove. The utility model monitors the temperature in the mold cavity through a temperature sensor inside the upper mold base, controls the heating element and the cooling system through the temperature controller, and adjusts the temperature in the mold cavity in real time to make it reach a suitable constant temperature state, so as to effectively avoid excessively high temperature damaging the mold or excessively low temperature affecting the injection molding effect.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold with a temperature sensing component. Background Art

[0002] Injection molding is also called injection molding. It is a molding method that combines injection and molding. At a certain temperature, the completely molten plastic material is stirred by a screw, injected into the mold cavity with high pressure, and the molded product is obtained after cooling and solidification. It is one of the important processing methods in the mold industry.

[0003] Among them, the "constant temperature injection mold" recorded in the patent publication number "CN208343334U" includes an injection port, an upper top plate, a fixing hole, a connecting plate, a constant temperature control panel, an injection mold core, a bottom groove, a module, a base, a side block, a locking block, a fixing pin, and a heat dissipation hole. The bottom groove and the base are an integrated structure. The module is arranged on the injection mold core, and the side block is embedded and installed on the base and welded to each other. The utility model is a constant temperature injection mold. As the temperature continues to rise, its temperature sensor can sense its temperature. If the temperature is too high, its control panel will control the electromagnet to lose adsorption on the armature, so that its movable plate, driven by the spring, disconnects its conductive ball from the connecting wire, stops its power supply to the heater, and stops the heating rod from working. The patent discloses that by improving the structure of the equipment, it can automatically cut off the power when the temperature of the equipment is too high, so as to prevent the equipment from being damaged due to excessive temperature.

[0004] However, this type of injection mold still has certain problems during use, such as:

[0005] The heating rod continues to heat to a high temperature and the device temperature cannot be quickly reduced to a suitable temperature after the power is turned off, and there is still a possibility of damage to the equipment; the natural cooling time through the heat dissipation holes is long, resulting in low injection molding cycle efficiency, and it is easy to cause uneven cooling, thus affecting product quality. In addition, manual demolding increases the difficulty of product demolding. Utility Model Content

[0006] The purpose of the utility model is to provide an injection mold with a temperature sensing component to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold with a temperature sensing component, comprising an upper mold base, a lower mold base, a mold cavity, a temperature controller, an ejection mechanism and a fixed base;

[0008] Wherein, an injection port is provided at the center of the top of the upper mold base, a main flow channel is sleeved in the injection port, four branch flow channels are fixedly connected to the bottom of the main flow channel, the bottom of the four branch flow channels pass through the bottom of the upper mold base, and the branch flow channels are flush with the bottom of the upper mold base, a heating element is installed at the mold cavity at the bottom end of the upper mold base, the heating element is electrically connected to an electric wire, the electric wire sleeve is provided with a first threading tube, the other end of the first threading tube passes through the side of the upper mold base and is externally connected to a temperature controller, a temperature sensor is embedded in the center of the bottom end of the upper mold base, the top of the temperature sensor is electrically connected to a temperature sensing wire, the temperature sensing wire sleeve is provided with a second threading tube, and the second threading tube is fixedly connected to the first threading tube;

[0009] A cold water pipe is installed at the top mold cavity inside the lower mold base. One end of the cold water pipe passes through the water inlet hole opened on the side of the lower mold base and is fixedly connected to the water inlet. The other end of the cold water pipe passes through the water outlet hole opened on the side of the lower mold base and is fixedly connected to the water outlet.

[0010] The four corners of the top of the fixed base are fixedly connected to the limiting rods, the center of the top of the fixed base is provided with a top plate groove, an ejection mechanism is slidably connected in the top plate groove, the ejection mechanism includes a top plate slidably connected in the top plate groove, five ejector pins are fixedly connected at the center of the top of the top plate corresponding to the mold cavity, the four corners of the top of the top plate are fixedly connected to the return springs, and the top ends of the four return springs are fixedly connected to the bottom end of the lower mold base.

[0011] As a preferred solution of the utility model, the cavity formed when the upper die base and the lower die base are closed is the die cavity.

[0012] As a preferred solution of the utility model, the electric wire and the temperature sensing wire are both electrically connected to the temperature controller.

[0013] As a preferred solution of the utility model, five first ejector holes are opened at the bottom of the lower mold base, and five second ejector holes are opened at the mold cavity at the top of the lower mold base. The five ejectors are slidably sleeved in the first ejector holes and the second ejector holes in sequence, and the top of the ejector is flush with the top of the lower mold base.

[0014] As a preferred solution of the utility model, the top and bottom corners of the upper die base are each provided with first limit holes aligned vertically, the first limit holes are each sleeved with a first limit sleeve, and the first limit sleeve is slidably connected to the limit rod.

[0015] As a preferred solution of the utility model, the top and bottom corners of the lower die base are each provided with a second limiting hole aligned vertically, the second limiting hole is each sleeved with a second limiting sleeve, and the second limiting sleeve is fixedly connected to the limiting rod.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model monitors the temperature in the mold cavity in real time through the temperature sensor embedded in the upper mold base, and then controls the heating element and the cooling system to heat or cool the mold cavity through the temperature controller, so as to achieve constant temperature in the mold cavity, improve the accuracy of mold cavity temperature control, effectively avoid equipment manufacturing losses caused by excessively high temperature, affect product molding effects caused by excessively low temperature, and increase the practicality of the mold;

[0018] 2. The utility model uses the cold water pipe in the lower die seat to quickly cool the die cavity, effectively shortening the product molding time, improving the mold production efficiency, and effectively avoiding product quality problems caused by uneven cooling;

[0019] 3. During demoulding, the ejector pin of the injection molding machine pushes the ejector plate upward through the ejector pin groove, and the ejector pin moves upward with the ejector plate to eject the product out of the mold cavity. The utility model effectively reduces the difficulty of demoulding the product through the above structure and increases the practicality of the mold;

[0020] 4. During demoulding, the ejector rod of the injection molding machine moves upward to the ejection mechanism, and the reset spring is compressed. When demoulding is completed, the force disappears, and the reset spring pushes the top plate back to its initial state. The utility model automatically resets the ejection mechanism through the reset spring, effectively avoiding incomplete reset caused by tilting and shaking of the top plate, which affects the operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a structural disassembly diagram of the utility model;

[0023] Figure 3 This is a schematic diagram of the interior of the upper die base of the utility model;

[0024] Figure 4 This is a schematic diagram of the interior of the lower die base of the utility model;

[0025] Figure 5 It is the overall internal front view of the utility model.

[0026] In the attached figure:

[0027] 100, upper mold base; 110, injection port; 111, main flow channel; 112, branch flow channel; 120, heating element; 121, electric wire; 122, first threading tube; 130, temperature sensor; 131, temperature sensing wire; 132, second threading tube; 140, first limiting hole; 141, first limiting sleeve;

[0028] 200, lower die base; 210, cold water pipe; 220, water inlet hole; 221, water inlet; 230, water outlet hole; 231, water outlet; 240, first ejector hole; 250, second ejector hole; 260, second limiting hole; 261, second limiting sleeve;

[0029] 300, mold cavity;

[0030] 400. Temperature controller;

[0031] 500, ejection mechanism; 510, ejector plate; 520, ejector pin; 530, return spring;

[0032] 600, fixed base; 610, limit rod; 620, top plate groove; 630, top rod groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figures 1 to 5 , the utility model provides a technical solution:

[0035] An injection mold with a temperature sensing component includes an upper mold base 100, a lower mold base 200, a mold cavity 300, a temperature controller 400, an ejection mechanism 500 and a fixed base 600;

[0036] Among them, an injection port 110 is opened at the center of the top of the upper mold base 100, and a main flow channel 111 is sleeved inside the injection port 110. Four branch flow channels 112 are fixedly connected to the bottom of the main flow channel 111. The bottoms of the four branch flow channels 112 pass through the bottom of the upper mold base 100, and the bottoms of the branch flow channels 112 are flush with the bottom of the upper mold base 100. A heating element 120 is installed at the mold cavity 300 at the bottom end of the upper mold base 100. The heating element 120 is electrically connected to a wire 121. The wire 121 is sleeved with a first threading tube 122. The other end of the first threading tube 122 passes through the side of the upper mold base 100 and is externally connected to a temperature controller 400. A temperature sensor 130 is embedded in the center of the bottom end of the upper mold base 100. The top of the temperature sensor 130 is electrically connected to a temperature sensing wire 131. The temperature sensing wire 131 is sleeved with a second threading tube 132. The second threading tube 132 is fixedly connected to the first threading tube 122.

[0037] A cold water pipe 210 is installed at the top mold cavity 300 inside the lower mold base 200. One end of the cold water pipe 210 passes through the water inlet hole 220 opened on the side of the lower mold base 200 and is fixedly connected to the water inlet 221. The other end of the cold water pipe 210 passes through the water outlet hole 230 opened on the side of the lower mold base 200 and is fixedly connected to the water outlet 231.

[0038] In a specific embodiment, when the injection mold is working, the temperature sensor 130 monitors the temperature in the mold cavity 300 in real time. When the temperature is detected to be low, the temperature controller 400 starts the heating element 120 to increase the temperature in the mold cavity 300. When the temperature is detected to be high, the temperature controller 400 starts the cooling system to allow the coolant to flow into the cold water pipe 210 to lower the temperature of the mold cavity 300 and keep the mold cavity 300 at the required temperature. In addition, after the injection molding is completed, the heating element 120 is turned off and the coolant is allowed to flow into the cold water pipe 210 to accelerate the uniform cooling of the product, effectively improve the mold production quality and efficiency, and increase the practicality of the injection mold.

[0039] See also Figure 1 to Figure 2 The four corners of the top of the fixed base 600 are fixedly connected to the limit rod 610, the center of the top of the fixed base 600 is provided with a top plate groove 620, the center of the top plate groove 620 is provided with a top rod groove 630, the top plate groove 620 is slidably connected with the ejection mechanism 500, the ejection mechanism 500 includes a top plate 510 slidably connected in the top plate groove 620, five ejector pins 520 are fixedly connected at the center of the top of the top plate 510 corresponding to the mold cavity 300, the four corners of the top of the top plate 510 are fixedly connected with return springs 530, and the top ends of the four return springs 530 are fixedly connected to the bottom end of the lower mold base 200.

[0040] In a specific embodiment, when the product is demoulded, the ejector pin of the injection molding machine pushes the top plate 510 to slide upward in the top plate groove 620 through the ejector pin groove 630, and the return spring 530 is compressed. When the ejector pin is retracted after demoulding, the return spring 530 pushes the top plate 510 to automatically return to the initial state, effectively improving the mold cycle efficiency and increasing the practicality of the injection mold. At the same time, the return spring 530 is fixedly connected between the lower mold base 200 and the top plate 510, and cooperates with the top plate groove 620 to limit the sliding range of the top plate 510, effectively preventing the top plate groove 620 from shaking or tilting during the sliding process to affect the demoulding of the product, further increasing the practicality of the injection mold.

[0041] See also Figures 1 to 3 The upper die base 100 has four corners at the top and bottom end thereof, each of which is provided with first limit holes 140 aligned vertically, each of which is sleeved with a first limit sleeve 141, and the first limit sleeve 141 is slidably connected to the limit rod 610. The lower die base 200 has four corners at the top and bottom end thereof, each of which is provided with second limit holes 260 aligned vertically, each of which is sleeved with a second limit sleeve 261, and the second limit sleeve 261 is fixedly connected to the limit rod 610.

[0042] In a specific embodiment, during demolding, the upper mold base 100 slides away from the lower mold base 200, and the limiting rod 610 slides out of the first limiting sleeve 141. After demolding is completed, the first limiting hole 140 of the upper mold base 100 slides in alignment with the limiting rod 610 and re-fits with the lower mold base 200, effectively avoiding misalignment when the upper and lower mold bases 200 are merged, affecting the formation of the mold cavity 300 and resulting in poor product molding effect.

[0043] See also Figures 1 to 4 Five first ejector holes 240 are opened at the bottom of the lower mold base 200, and five second ejector holes 250 are opened at the mold cavity 300 at the top of the lower mold base 200. Five ejector pins 520 are slidably sleeved in the first ejector pin holes 240 and the second ejector pin holes 250 in sequence, and the top of the ejector pin 520 is flush with the top of the lower mold base 200.

[0044] In a specific embodiment, during the demolding process, five ejector pins 520 slide with the ejector plate 510 to simultaneously lift up the molded product from the center and surrounding areas of the mold cavity 300, effectively avoiding damage to the product due to uneven force, and effectively reducing the difficulty of demolding, thereby increasing the practicality of the injection mold.

[0045] Working principle: First, place the injection mold at the designated position, set the required temperature of the mold cavity 300 through the temperature controller 400, connect the water inlet pipe to the water inlet 221, connect the water outlet pipe to the water outlet 231, connect the other end of the water inlet pipe to the water pump, and the water pump is electrically connected to the temperature controller 400. Then inject the raw material through the injection port 110. At this time, the temperature controller 400 detects that the temperature is lower than the set value through the temperature sensor 130, and starts the heating element 120 to heat the mold cavity 300. When the temperature exceeds the set value, start the water pump to inject cold water into the cold water pipe 210 to cool the mold cavity 300 and keep the mold cavity 300 at the set temperature. After the raw material is completely melted, turn off the heating element 120, start the water pump to allow cold water to continue to flow through the cold water pipe 210, and accelerate the cooling of the mold cavity 300. After cooling, the upper mold base 100 slides upward along the limit rod 610 and separates from the lower mold base 200. The ejector pin of the injection molding machine pushes the ejector plate 510 upward along the ejector pin groove 630, and the ejector pin 520 ejects the product in the mold cavity 300 upward. After the product is taken out, the ejector pin of the injection molding machine is retracted, and the return spring 530 drives the ejector plate 510 and the ejector pin 520 to return to the initial state. At the same time, the first limit sleeve 141 of the upper mold base 100 slides downward along the limit rod 610 and fits with the lower mold base 200 again, waiting for the next round of injection molding.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold with a temperature sensing component, characterized in that: include: An upper mold base (100), a lower mold base (200), a mold cavity (300), a temperature controller (400), an ejection mechanism (500) and a fixed base (600); The top center of the upper mold base (100) is provided with an injection port (110), the injection port (110) is provided with a main flow channel (111), the bottom of the main flow channel is fixedly connected with four branch flow channels (112), the bottoms of the four branch flow channels (112) pass through the bottom of the upper mold base (100), and the bottom of the branch flow channels (112) is flush with the bottom of the upper mold base (100), and a heating element (120) is installed at the bottom mold cavity (300) inside the upper mold base (100), and the heating element (120) is electrically connected with an electric wire. (121), the electric wire (121) is sleeved with a first threading tube (122), the other end of the first threading tube (122) passes through the side of the upper mold base (100) and is externally connected to a temperature controller (400), a temperature sensor (130) is embedded in the center of the bottom end of the upper mold base (100), the top of the temperature sensor (130) is electrically connected to a temperature sensing wire (131), the temperature sensing wire (131) is sleeved with a second threading tube (132), and the second threading tube (132) is fixedly connected to the first threading tube (122); A cold water pipe (210) is installed at the top mold cavity (300) inside the lower mold base (200); one end of the cold water pipe (210) passes through a water inlet hole (220) opened on the side of the lower mold base (200) and is fixedly connected to a water inlet (221); the other end of the cold water pipe (210) passes through a water outlet hole (230) opened on the side of the lower mold base (200) and is fixedly connected to a water outlet (231); The four corners of the top of the fixed base (600) are fixedly connected to limit rods (610), the center of the top of the fixed base (600) is provided with a top plate groove (620), an ejection mechanism (500) is slidably connected in the top plate groove (620), the ejection mechanism (500) comprises a top plate (510) slidably connected in the top plate groove (620), five ejector pins (520) are fixedly connected at the top center of the top plate (510) corresponding to the mold cavity (300), the four corners of the top of the top plate (510) are fixedly connected to return springs (530), and the top ends of the four return springs (530) are fixedly connected to the bottom end of the lower mold base (200).

2. The injection mold with a temperature sensing component according to claim 1, characterized in that: The cavity formed when the upper die seat (100) and the lower die seat (200) are closed is the die cavity (300).

3. The injection mold with a temperature sensing component according to claim 1, characterized in that: The electric wire (121) and the temperature sensing wire (131) are both electrically connected to the temperature controller (400).

4. The injection mold with a temperature sensing component according to claim 1, characterized in that: The bottom end of the lower mold base (200) is provided with five first ejector holes (240), and the top mold cavity (300) of the lower mold base (200) is provided with five second ejector holes (250). The five ejector pins (520) are slidably sleeved in the first ejector pin holes (240) and the second ejector pin holes (250) in sequence, and the top ends of the ejector pins (520) are flush with the top end of the lower mold base (200).

5. The injection mold with a temperature sensing component according to claim 1, characterized in that: The top and bottom corners of the upper die seat (100) are each provided with first limiting holes (140) aligned vertically, the first limiting holes (140) are each sleeved with a first limiting sleeve (141), and the first limiting sleeve (141) is slidably connected to the limiting rod (610).

6. The injection mold with a temperature sensing component according to claim 1, characterized in that: The top and bottom corners of the lower die base (200) are each provided with a second limiting hole (260) aligned vertically, the second limiting hole (260) is each sleeved with a second limiting sleeve (261), and the second limiting sleeve (261) is fixedly connected to the limiting rod (610).

7. The injection mold with a temperature sensing component according to claim 1, characterized in that: A top rod groove (630) is provided at the center of the top plate groove (620) of the fixed base (600).

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