Thermoplastic resin forming mold

Abstract

The utility model relates to the technical field of thermoplastic resin forming molds, in particular to a thermoplastic resin forming mold. According to the technical scheme, the device comprises an installation plate detachably installed on a bottom die or an upper die, a plurality of electric heating pipes are installed on the installation plate, open grooves for installation of the installation plate are formed in the back faces of the bottom die and the upper die, a plurality of pipe grooves matched with the electric heating pipes are formed in the open grooves, a plurality of cooling channels are formed in the bottom die and the upper die, and the cooling channels are communicated with the installation plate. The cooling channels are located between the adjacent pipe grooves, the cooling channels are arranged close to the die cavity, and the multiple cooling channels communicate with one another. According to the heating and cooling structure disclosed by the utility model, through the distributed arrangement, thermoplastic resin in the mold can be uniformly heated and efficiently cooled, so that the molding period is greatly shortened, the production efficiency is improved, and meanwhile, the product quality problems, such as warping, deformation and internal stress, caused by non-uniform temperature are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to thermoplastic resin forming die technical field especially relates to a thermoplastic resin forming die. BACKGROUND

[0002] In the forming process of thermoplastic resin, the mold plays a vital role. The traditional thermoplastic resin forming die often has many defects. For example, the cooling efficiency of the mold is low, which leads to long forming cycle and difficult improvement of production efficiency. In the heating process, the heat distribution is uneven, which easily causes the inconsistent curing speed of the resin in the mold, and further causes the quality problems such as warping, deformation and internal stress concentration of the formed product. SUMMARY

[0003] The utility model discloses a thermoplastic resin forming die to solve the problems in the background art.

[0004] The utility model discloses a technical scheme: a thermoplastic resin forming die, including bottom die and upper die, bottom die and upper die form the mold cavity between, bottom die and upper die are equipped with heating and cooling structure all;

[0005] The heating and cooling structure includes a mounting plate detachably mounted on the bottom die or the upper die, a plurality of electric heating pipes are mounted on the mounting plate, the back surface of the bottom die and the upper die is provided with a slot for mounting the mounting plate, a plurality of pipe grooves matched with the electric heating pipes are formed in the slot, a plurality of cooling channels are formed in the bottom die and the upper die, and the cooling channels are located between adjacent pipe grooves, the cooling channels are arranged close to the mold cavity, and the plurality of cooling channels are connected with each other.

[0006] The heating and cooling structure further includes a plurality of temperature sensors distributed on the periphery of the bottom die and the upper die.

[0007] Preferably, a matching groove is formed on the periphery of the slot, a matching strip matched with the matching groove is mounted on the periphery of the mounting plate, and a power supply interface is arranged on one side of the mounting plate.

[0008] Preferably, a sealing baffle structure is arranged between the bottom die and the upper die, the sealing baffle structure includes a sealing groove formed in the bottom die, and a sealing gasket fixed on the upper die, and the sealing gasket is matched with the sealing groove.

[0009] Preferably, the sealing baffle structure further includes a dust blocking groove formed in the bottom die, and the dust blocking groove is located below the sealing groove, the bottom of the sealing gasket is provided with a high-cleanliness self-suction adhesive film matched with the dust blocking groove, and a stabilizing plate is arranged between the sealing gasket and the high-cleanliness self-suction adhesive film.

[0010] Preferably, the bottom die and the upper die are both provided with screw holes, and bolts are threadedly installed between the two screw holes on the same side.

[0011] Compared with the prior art, the beneficial effects of the utility model are that: the scheme sets heating and cooling structures, which can make the thermoplastic resin in the mold uniformly heated and efficiently cooled through the distributed setting, greatly shorten the forming cycle, improve the production efficiency, and reduce the product quality problems caused by uneven temperature, such as warping, deformation and internal stress. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the utility model's explosion map;

[0013] Figure 2 is the utility model pipe groove's structure schematic view;

[0014] Figure 3 is the utility model electric heating pipe's installation structure schematic view;

[0015] Figure 4 is the utility model's cross section structure schematic view;

[0016] Figure 5 is the utility model stable plate's structure schematic view.

[0017] Reference signs: 1, bottom die;2, upper die;3, mounting plate;4, electric heating pipe;5, pipe groove;6, cooling channel;7, matching groove;8, matching strip;9, power supply interface;10, sealing groove;11, dust blocking groove;12, sealing gasket;13, high-cleanliness self-suction adhesive film;14, stable plate;100, screw hole;200, bolt. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. EMBODIMENT

[0019] Refer to the drawings in the embodiments of the utility model Figures 1-4 A thermoplastic resin forming mold, comprising a bottom die 1 and an upper die 2, a mold cavity is formed between the bottom die 1 and the upper die 2, and the bottom die 1 and the upper die 2 are both provided with heating and cooling structures;

[0020] The heating and cooling structure comprises a mounting plate 3 detachably mounted on the bottom die 1 or the upper die 2, a plurality of electric heating pipes 4 mounted on the mounting plate 3, the back of the bottom die 1 and the upper die 2 is provided with a slot for mounting the mounting plate 3, a plurality of pipe grooves 5 adapted to the electric heating pipes 4 are arranged in the slot, a plurality of cooling channels 6 are arranged in the bottom die 1 and the upper die 2, the cooling channels 6 are located between adjacent pipe grooves 5, and the cooling channels 6 are arranged close to the mold cavity, and the plurality of cooling channels 6 are communicated with each other.

[0021] The heating and cooling structure further comprises a plurality of temperature sensors distributed around the bottom die 1 and the upper die 2.

[0022] The mounting plate 3 is mounted on the bottom die 1 and the upper die 2, so that the electric heating pipes 4 enter the pipe grooves 5, the bottom die 1 and the upper die 2 can be heated through the pipe grooves 5, and the bottom die 1 and the upper die 2 can be cooled by inputting cooling water into the cooling channels 6, thereby forming a heating and cooling structure, and through the distributed arrangement, the thermoplastic resin in the mold can be heated uniformly and cooled efficiently, greatly shortening the molding cycle and improving the production efficiency, and reducing the product quality problems caused by uneven temperature, such as warping, deformation and internal stress.

[0023] And through the detachable mounting mode of 3, the pipe grooves 5 can be maintained and repaired in time, and replaced in the later period.

[0024] In specific operation, first, according to the requirements of the molded product, select the appropriate insert and install it inside the mold cavity, start the pipe grooves 5 to preheat the mold, so that the mold reaches the temperature range required for thermoplastic resin molding, and during the heating process, the temperature of different areas of the mold is measured in real time by the temperature sensor, and the heating wire power is adjusted in real time through temperature feedback to ensure the uniformity of the mold temperature.

[0025] Then, the molten thermoplastic resin is injected into the mold cavity, during the injection process, the air in the mold cavity is discharged to the outside of the mold through the exhaust groove and the exhaust channel on the parting surface, and the resin gradually solidifies in the mold cavity, at this time, the cooling liquid is delivered to the cooling channels 6 by the external cooling water pump, and the cooling liquid circulates in the plurality of cooling channels 6, taking away the heat generated during the solidification process of the resin, and accelerating the solidification process of the resin.

[0026] It should be noted that the exhaust groove and the exhaust channel are components well known in the art, and are shown in the drawings of the present technical scheme, but specific marks are not made.

[0027] In addition, the arrangement of the pipe grooves 5 between the adjacent cooling channels 6 can avoid the problem that the existence of the cooling channels 6 causes excessive heat to gather in the cooling channels 6, reducing the heat conductivity, and also can avoid the problem that when cold water enters the cooling channels 6, a large amount of water vapor is generated.

[0028] As Figure 1 and 2 shown, the slotting circumferential side is provided with a matching groove 7, and the circumferential side of the mounting plate 3 is provided with a matching strip 8 matched with the matching groove 7, and one side of the mounting plate 3 is provided with a power supply interface 9;

[0029] When installing, the mounting plate 3 is inserted into the slot, which makes the matching strip 8 enter the matching groove 7, so that the electric heating tube 4 enters the pipe groove 5, and then the power supply is connected through the power supply interface 9, so that the electric heating tube 4 starts heating. Embodiment

[0030] Referring to the accompanying Figure 1 , Figure 4 and Figure 5 , based on the basis of embodiment one, including the bottom die 1 and the upper die 2, the mold cavity is formed between the bottom die 1 and the upper die 2, and the sealing baffle structure is arranged between the bottom die 1 and the upper die 2, the sealing baffle structure includes a sealing groove 10 opened in the bottom die 1, and further includes a sealing gasket 12 fixed on the upper die 2, the sealing gasket 12 and the sealing groove 10 are matched.

[0031] Specifically, the sealing baffle structure further includes a dust blocking groove 11 opened in the bottom die 1, the dust blocking groove 11 is located below the sealing groove 10, the bottom of the sealing gasket 12 is provided with a high-cleanliness self-absorbing adhesive film 13, the high-cleanliness self-absorbing adhesive film 13 is matched with the dust blocking groove 11, and the sealing gasket 12 and the high-cleanliness self-absorbing adhesive film 13 are provided with a stabilizing plate 14;

[0032] When the bottom die 1 and the upper die 2 are installed, the sealing gasket 12 is inserted into the sealing groove 10, the high-cleanliness self-absorbing adhesive film 13 is inserted into the dust blocking groove 11, the connection between the bottom die 1 and the upper die 2 is sealed by the sealing gasket 12, and some dust may enter through the sealing gasket 12, at this time, the dust is adsorbed by the high-cleanliness self-absorbing adhesive film 13, which plays a dust blocking effect, and the stabilizing plate 14 between the sealing gasket 12 and the high-cleanliness self-absorbing adhesive film 13 can enhance the strength and stability of the structure.

[0033] In addition, the bottom die 1 and the upper die 2 are both provided with screw holes 100, and two screw holes 100 on the same side are threadedly connected with a bolt 200;

[0034] Specifically, when installing, the upper die 2 is covered on the bottom die 1, so that the high-cleanliness self-absorbing adhesive film 13 enters the dust blocking groove 11, the sealing gasket 12 enters the sealing groove 10, and then the bolt 200 is installed into the screw hole 100.

[0035] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0036] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0037] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A molding die for a thermoplastic resin, comprising a lower die (1) and an upper die (2) that form a cavity therebetween, characterized in that, The bottom die (1) and the upper die (2) are provided with heating and cooling structures; The heating and cooling structures comprise mounting plates (3) detachably mounted on the bottom die (1) or the upper die (2), a plurality of electric heating pipes (4) are mounted on the mounting plates (3), the back surfaces of the bottom die (1) and the upper die (2) are provided with grooves for mounting the mounting plates (3), a plurality of pipe grooves (5) adapted to the electric heating pipes (4) are formed in the grooves, a plurality of cooling channels (6) are formed in the bottom die (1) and the upper die (2), the cooling channels (6) are located between adjacent pipe grooves (5), the cooling channels (6) are located close to the die cavities, and the cooling channels (6) are in communication with each other. The heating and cooling structures further comprise a plurality of temperature sensors distributed around the bottom die (1) and the upper die (2).

2. A thermoplastic resin molding die according to claim 1, wherein Cooperating grooves (7) are formed around the grooves, cooperating strips (8) adapted to the cooperating grooves (7) are mounted on the peripheries of the mounting plates (3), and one side of the mounting plate (3) is provided with a power supply interface (9).

3. A thermoplastic resin molding die according to claim 1, wherein The bottom die (1) and the upper die (2) are provided with a sealing and blocking structure, the sealing and blocking structure comprises a sealing groove (10) formed in the bottom die (1), and further comprises a sealing gasket (12) fixed on the upper die (2), the sealing gasket (12) is adapted to the sealing groove (10).

4. A thermoplastic resin molding die according to claim 3, wherein The sealing and blocking structure further comprises a dust blocking groove (11) formed in the bottom die (1), the dust blocking groove (11) is located below the sealing groove (10), the bottom of the sealing gasket (12) is provided with a high-cleanliness self-suction adhesive film (13) adapted to the dust blocking groove (11), and a stabilizing plate (14) is arranged between the sealing gasket (12) and the high-cleanliness self-suction adhesive film (13).

5. A thermoplastic resin molding die according to claim 1, wherein The bottom die (1) and the upper die (2) are provided with screw holes (100), and a bolt (200) is threadedly mounted between two screw holes (100) on the same side.

Images