Injection molding preheating material guide mechanism

Abstract

The utility model relates to the technical field of material guiding equipment, in particular to an injection molding preheating material guiding mechanism. Comprising a mold and a preheating guide mechanism, the die comprises an upper die and a lower die, the preheating material guiding mechanism comprises an upper preheating plate and a lower preheating plate, the upper die is fixedly connected with the upper preheating plate, the lower die is fixedly connected with the lower preheating plate, and the temperature of the upper die and the temperature of the lower die can be transmitted to the upper preheating plate and the lower preheating plate. A material belt can pass through the space between the upper preheating plate and the lower preheating plate and enters the space between the upper mold and the lower mold for injection molding; compared with the prior art, the preheating material guiding mechanism is arranged and is correspondingly and fixedly connected with the mold, so that the temperature on the mold can be conducted to the preheating material guiding mechanism, the material belt is heated in advance, and when the heated material belt enters the mold for injection molding, the temperature of the material belt can be close to the set temperature; the thermal expansion coefficient of mold injection molding is achieved, and the precision of injection molding finished products is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material guiding equipment, in particular to an injection molding preheating material guiding mechanism. Background Art

[0002] During the production process of LED bracket strips, injection molding is required on the strips, but the current injection molding equipment does not have the preheating function and can only be heated in the mold. This not only prolongs the injection molding time and reduces production efficiency, but also because the temperature of the strip entering the mold is low and does not reach the set thermal expansion coefficient value, the precision of the injection molded product will be affected during the injection molding process (plastic strips are easy to solidify at low temperatures, affecting fluidity); for this reason, we propose an injection molding preheating material guiding mechanism. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an injection molding preheating material guiding mechanism, which, after being improved, can effectively solve the problems raised in the above-mentioned background technology.

[0004] The technical solution of the utility model is:

[0005] An injection molding preheating material guiding mechanism, comprising a mold and a preheating material guiding mechanism;

[0006] The mold includes an upper mold and a lower mold, and the preheating material guiding mechanism includes an upper preheating plate and a lower preheating plate. The upper mold is fixedly connected to the upper preheating plate, and the lower mold is fixedly connected to the lower preheating plate. The temperature of the upper mold and the lower mold can be transmitted to the upper preheating plate and the lower preheating plate. A material belt can pass between the upper preheating plate and the lower preheating plate and enter between the upper mold and the lower mold for injection molding.

[0007] Furthermore, the upper preheating plate and the lower preheating plate are both made of metal.

[0008] Furthermore, a hot runner is disposed inside the upper mold and the lower mold, a liquid inlet pipe is disposed at one end of the hot runner, and a liquid outlet pipe is disposed at the other end of the hot runner.

[0009] Furthermore, the ends of the upper preheating plate and the lower preheating plate away from the mold are both inclined and mirror-imaged.

[0010] Furthermore, the upper mold is fixedly connected to the upper preheating plate by bolts, and the lower mold is fixedly connected to the lower preheating plate by bolts.

[0011] Furthermore, grooves are provided at both ends of the surface of the lower preheating plate close to the upper preheating plate, and convex ridges adapted to the grooves are provided at both ends of the surface of the upper preheating plate close to the lower preheating plate. When the upper preheating plate and the lower preheating plate are put together, the convex ridges are inserted into the grooves, and when the upper preheating plate and the lower preheating plate are separated, the inserted ends of the convex ridges are located inside the grooves.

[0012] The beneficial effects of the utility model are:

[0013] Compared with the prior art, the utility model is provided with a preheating material guiding mechanism, which is fixedly connected to the mold. The temperature on the mold can be transmitted to the preheating material guiding mechanism, so as to realize the early heating of the material strip. When the heated material strip enters the mold for injection molding, the temperature of the material strip can be close to the set temperature, reaching the thermal expansion coefficient of the mold injection, thereby greatly improving the precision of the injection molded product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the upper preheating plate and the lower preheating plate of the utility model when they are combined;

[0016] Figure 3 It is a schematic diagram of the upper preheating plate and the lower preheating plate of the utility model when they are separated.

[0017] In the figure, 1. mold; 2. preheating material guiding mechanism; 3. upper preheating plate; 4. lower preheating plate; 5. hot runner; 6. liquid inlet pipe; 7. liquid outlet pipe. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0019] like Figure 1-3 As shown,

[0020] A preheating material guiding mechanism for injection molding comprises a mold 1 and a preheating material guiding mechanism 2; the mold 1 comprises an upper mold and a lower mold, the preheating material guiding mechanism 2 comprises an upper preheating plate 3 and a lower preheating plate 4, the upper mold is fixedly connected to the upper preheating plate 3, the lower mold is fixedly connected to the lower preheating plate 4, the temperature of the upper mold and the lower mold can be transmitted to the upper preheating plate 3 and the lower preheating plate 4, a material belt can pass between the upper preheating plate 3 and the lower preheating plate 4 and enter between the upper mold and the lower mold for injection molding; in this embodiment, by providing a preheating material guiding mechanism 2, and the upper preheating plate 3 and the lower preheating plate 4 are respectively fixedly connected to the corresponding upper mold and the lower mold, the mold 1 can open the upper preheating plate 3 and the lower preheating plate 4 during the mold opening process, which is convenient for the entry of the material belt, and the heat of the upper mold and the lower mold can be transmitted to the upper preheating plate 3 and the lower preheating plate 4 to preheat the material belt, and has the preheating function.

[0021] As a preferred embodiment, the upper preheating plate 3 and the lower preheating plate 4 are both made of metal. By using metal materials, the efficiency of heat transfer can be improved, thereby improving the preheating effect.

[0022] As a preferred embodiment; a hot runner 5 is provided inside the upper mold and the lower mold, one end of the hot runner 5 is provided with a liquid inlet pipe 6, and the other end of the hot runner 5 is provided with a liquid outlet pipe 7; it can be understood that hot water can be passed into the hot runner 5, and the hot runner 5 can heat the mold 1, and then transfer the heat to the upper preheating plate 3 and the lower preheating plate 4.

[0023] As a preferred embodiment, the ends of the upper preheating plate 3 and the lower preheating plate 4 away from the mold 1 are both inclined and mirror-imaged. The purpose of this design is to form a trumpet shape at the feed inlet of the upper preheating plate 3 and the lower preheating plate 4 to facilitate the entry of the material strip.

[0024] As a preferred embodiment; the upper mold is fixedly connected to the upper preheating plate 3 by bolts, and the lower mold is fixedly connected to the lower preheating plate 4 by bolts.

[0025] As a preferred embodiment; grooves are provided at both ends of the surface of the lower preheating plate 4 close to the upper preheating plate 3, and ridges adapted to the grooves are provided at both ends of the surface of the upper preheating plate 3 close to the lower preheating plate 4. When the upper preheating plate 3 and the lower preheating plate 4 are put together, the ridges are inserted into the grooves, and when the upper preheating plate 3 and the lower preheating plate 4 are separated, the inserted ends of the ridges are located inside the grooves. It can be understood that the purpose of setting the grooves and ridges is to limit the material strip. When the upper preheating plate 3 is close to the lower preheating plate 4 and is closed, the ridges can be inserted into the grooves, and when opened, the ridges can also be located inside the grooves, thereby achieving limitation and facilitating the conveying of the material strip.

[0026] The working principle of the utility model is as follows: the material strip is located between the upper preheating plate 3 and the lower preheating plate 4, and between the upper mold and the lower mold. The material strip is a rolled structure. A strip pulling machine is provided at the bottom of the mold 1, which can pull the material strip to realize the conveyance of the material strip. When working, the upper mold and the lower mold are opened, thereby driving the upper preheating plate 3 and the lower preheating plate 4 to open, and pulling the material strip of the part to be injected. Then, this part of the material strip is located between the upper preheating plate 3 and the lower preheating plate 4. After the mold is closed (the upper preheating plate 3 and the lower preheating plate 4 will be closed together), the material strip is pressed and heated. After heating, the mold is opened again to enter the mold 1 for injection molding (closed mold injection molding).

[0027] It should be pointed out that the main problems in the prior art are: the current injection molding equipment does not have the function of preheating, and can only be heated in the mold. This not only prolongs the injection molding time of the mold and reduces production efficiency, but also, since the temperature of the material entering the mold is low and does not reach the set thermal expansion coefficient value, the precision of the injection molded product will be affected during the injection molding process;

[0028] Therefore, after the improvement of the present application, by providing a preheating material guiding mechanism 2 and fixedly connecting it to the mold 1, the temperature on the mold 1 can be transmitted to the preheating material guiding mechanism 2, so as to realize the early heating of the material strip. When the heated material strip enters the mold 1 for injection molding, the temperature of the material strip can be close to the set temperature, so as to reach the thermal expansion coefficient of the injection molding of the mold 1, thereby greatly improving the precision of the injection molded product.

[0029] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An injection molding preheating material guiding mechanism, characterized in that: It includes a mold and a preheating material guiding mechanism; The mold includes an upper mold and a lower mold, and the preheating material guiding mechanism includes an upper preheating plate and a lower preheating plate. The upper mold is fixedly connected to the upper preheating plate, and the lower mold is fixedly connected to the lower preheating plate. The temperature of the upper mold and the lower mold can be transmitted to the upper preheating plate and the lower preheating plate. A material belt can pass between the upper preheating plate and the lower preheating plate and enter between the upper mold and the lower mold for injection molding.

2. The injection molding preheating material guiding mechanism according to claim 1, characterized in that: The upper preheating plate and the lower preheating plate are both made of metal.

3. The injection molding preheating material guiding mechanism according to claim 2, characterized in that: Hot runners are arranged inside the upper mold and the lower mold, a liquid inlet pipe is arranged at one end of the hot runner, and a liquid outlet pipe is arranged at the other end of the hot runner.

4. The injection molding preheating material guiding mechanism according to claim 3, characterized in that: The ends of the upper preheating plate and the lower preheating plate away from the mold are both inclined and mirror-imaged.

5. The injection molding preheating material guiding mechanism according to claim 4, characterized in that: The upper mold is fixedly connected to the upper preheating plate by bolts, and the lower mold is fixedly connected to the lower preheating plate by bolts.

6. The injection molding preheating material guiding mechanism according to claim 5, characterized in that: The surface of the lower preheating plate close to the upper preheating plate is provided with grooves at both ends, and the surface of the upper preheating plate close to the lower preheating plate is provided with ridges adapted to the grooves at both ends. When the upper preheating plate and the lower preheating plate are put together, the ridges are inserted into the grooves. When the upper preheating plate and the lower preheating plate are separated, the insertion ends of the ridges are located inside the grooves.

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