Shaping device and extrusion molding system

Abstract

The embodiment relates to the technical field of plastic forming, and provides a shaping device and an extrusion forming system; the shaping device comprises a device body, a heat conduction pipe and a heat exchange structure; a die profiling hole for conveying an extrusion piece is arranged in the device body; a reinforced cooling section is formed on the inner side wall of the die profiling hole; the heat conduction pipe is arranged in the device body; the extension direction of the heat conduction pipe is the same as that of the die profiling hole, and the heat conduction pipe is arranged on the side of the reinforced cooling section; the heat exchange structure is arranged in the device body and is used for heat exchange with the die profiling hole. In the embodiment, the reinforced cooling section is formed on the inner side wall of the die profiling hole, and the heat conduction pipe is arranged correspondingly to the reinforced cooling section, so that the complex structure is rapidly cooled and radiated, and the complex structure is prevented from being deformed and softened and collapsed; meanwhile, the heat exchange structure is used for overall cooling of the die profiling hole, the extrusion piece in the die profiling hole is preliminarily cooled and shaped, and subsequent rapid shaping is facilitated.

Description

TECHNICAL FIELD

[0001] The embodiment relates to the technical field of plastic forming, in particular to a shaping device and an extrusion forming system. BACKGROUND

[0002] Plastic supports are applied more and more widely, and are traditionally made of PC materials, which are high in cost. In the prior art, PP materials can be used to reduce raw material cost, however, PP materials are high in shrinkage and low in temperature resistance, and are very challenging to extrusion process.

[0003] In the prior art, after an extruder extrudes a pipe blank, the pipe blank enters a cooling water channel, and then is pulled by a pulling device to form a required pipe material, however, in the extrusion of a pipe material with a complex structure, such as a pipe material with a cross beam formed inside, the cross beam is prone to deformation and collapse during forming, manufacturing defects are generated, and the extrusion speed is limited to be improved. In summary, in the extrusion forming of PP materials, the extrusion quality and efficiency of the extruder system are not high. SUMMARY

[0004] The embodiment provides a shaping device and an extrusion forming system to solve the problem of low extrusion quality and efficiency of the extruder system, and realizes high-quality and rapid extrusion.

[0005] The embodiment provides a shaping device, which comprises:

[0006] A device body, a die profiling hole for conveying an extruded piece is arranged in the device body, and a reinforced cooling section is formed on the inner side wall of the die profiling hole;

[0007] A heat conduction pipe piece is arranged in the device body, the extension direction of the heat conduction pipe piece is the same as that of the die profiling hole, and the heat conduction pipe piece is arranged on the side of the reinforced cooling section; and

[0008] A heat exchange structure is arranged in the device body to exchange heat with the die profiling hole.

[0009] Optionally, the reinforced cooling section is formed with a plurality of reinforced cooling sections.

[0010] The heat conduction pipe piece is arranged with a plurality of heat conduction pipe pieces corresponding to the reinforced cooling section.

[0011] Optionally, a cooling channel is further formed in the shaping device, the cooling channel is arranged on the outer side of the die profiling hole, and the cooling channel is used to convey cooling liquid.

[0012] The cooling channel forms the heat exchange structure.

[0013] Optionally, the device body is further arranged with an inspection hole connected to the cooling channel.

[0014] The shaping device further comprises a plug head used to close the inspection hole.

[0015] Optionally, the cooling channel is provided in plurality, and the plurality of cooling channels are arranged at intervals along the extending direction of the mold profiling hole.

[0016] Optionally, the device body is further provided with a suction hole communicated to the inner side wall of the mold profiling hole, and the suction hole is used to extract air between the inner side wall of the mold profiling hole and the extruded part.

[0017] The embodiment further provides an extrusion molding system, comprising:

[0018] an extruder having a discharge port for conveying molten material outwardly;

[0019] an extrusion die having a material model cavity with one end open, and the material model cavity being communicated to the discharge port of the extruder; and

[0020] the shaping device of any one of the above;

[0021] wherein the mold profiling hole is arranged corresponding to the opening of the material model cavity for jointly conveying the extruded part.

[0022] Optionally, the cross section of the mold profiling hole comprises two beam bearing surfaces arranged oppositely;

[0023] The width direction between the two beam bearing surfaces is the extending direction of the beam, and the extending direction of the beam is arranged vertically;

[0024] wherein the beam bearing surface forms a strengthened cooling section.

[0025] Optionally, the extrusion die is further provided with an air inlet hole communicated to the end of the material model cavity away from the opening, for blowing cooling gas into the cavity of the extruded part in the material model cavity.

[0026] Optionally, the extrusion molding system further comprises a cooling water tank, a traction device and a cutting device arranged in sequence;

[0027] The cooling water tank is arranged corresponding to the mold profiling hole of the shaping device for receiving and cooling the extruded part;

[0028] The traction device is used to move the extruded part;

[0029] The cutting device is used to cut the extruded part.

[0030] In the shaping device provided in the embodiment, a die profiling hole for conveying the extrusion piece is arranged on the device body, the extrusion piece is formed with a complex structure such as a crossbeam, and a reinforced cooling section is formed on the inner side wall of the die profiling hole corresponding to the complex structure, so as to cool the complex structure. In the embodiment, the heat conduction pipe is arranged corresponding to the reinforced cooling section, so as to quickly cool the complex structure, ensure that the complex structure does not deform and soften and collapse, and at the same time, the heat exchange structure is used to cool the die profiling hole as a whole, so as to preliminarily cool and shape the extrusion piece in the die profiling hole, facilitate the subsequent rapid shaping, and further improve the extrusion efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present embodiment, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0032] Figure 1 The three-dimensional structure schematic diagram of an embodiment of the shaping device provided in the embodiment;

[0033] Figure 2 The Figure 1 schematic diagram of the front view and the sectional structure of the shaping device;

[0034] Figure 3 The sectional structure schematic diagram of the extrusion piece provided in the embodiment;

[0035] Figure 4 The structure schematic diagram of the extrusion molding system provided in the embodiment;

[0036] Figure 5 The Figure 4 schematic diagram of the structure of the extrusion die;

[0037] Figure 6 The Figure 4 schematic diagram of the side view and the sectional structure of the extrusion die.

[0038] Reference signs:

[0039] 100, shaping device; 1, device body; 11, die profiling hole; 12, cooling channel; 121, liquid inlet pipeline; 122, liquid outlet pipeline; 13, plug head; 2, heat conduction pipe; 3, air extraction pipeline; 200, extruder; 300, extrusion die; 4, air inlet hole; 400, cooling water tank; 500, traction device; 600, cutting device; A, extrusion piece. DETAILED DESCRIPTION

[0040] In order to make the purposes, technical solutions and advantages of the embodiments clearer, the technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only some, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0041] Referring to Figures 1-2 The present application provides a shaping device 100, comprising a device body 1, a heat conduction pipe 2 and a heat exchange structure; a die profiling hole 11 for conveying an extruded part is arranged in the device body 1, and a reinforced cooling section is formed on the inner side wall of the die profiling hole 11; the heat conduction pipe 2 is arranged in the device body 1, the extension direction of the heat conduction pipe 2 is the same as that of the die profiling hole 11, and the heat conduction pipe 2 is arranged at the side of the reinforced cooling section; the heat exchange structure is arranged in the device body 1 and is used for heat exchange with the die profiling hole 11.

[0042] In the shaping device 100 provided in the present application, the die profiling hole 11 for conveying the extruded part A is arranged in the device body 1, the extruded part A has a complex structure such as a crossbeam, and a reinforced cooling section is formed on the inner side wall of the die profiling hole 11 corresponding to the complex structure, so as to cool the complex structure. In the present application, the heat conduction pipe 2 is arranged corresponding to the reinforced cooling section, so as to quickly cool the complex structure and ensure that the complex structure does not deform and soften and collapse. At the same time, the heat exchange structure is used to cool the die profiling hole 11 as a whole and preliminarily cool and shape the extruded part A in the die profiling hole 11, so as to facilitate the subsequent rapid shaping and improve the extrusion efficiency.

[0043] Further, the reinforced cooling section is formed with a plurality of reinforced cooling sections, and the heat conduction pipe 2 is arranged corresponding to the reinforced cooling sections. In the present application, the plurality of heat conduction pipes 2 are used to quickly and simultaneously cool a plurality of complex structures or a large complex structure.

[0044] It should be noted that the cooling reinforced section is used to cool and radiate the structure inside the extruded part A, such as a protruding structure arranged on the inner side wall of the extruded part A. In the present application, the part adjacent to the protruding structure of the extruded part A is the cooling reinforced section, and the heat conduction pipe 2 is used to quickly radiate the structure inside the extruded part A.

[0045] In the embodiments provided in the present application, referring to Figure 3The extrusion piece A is formed with a crossbeam, the two ends of the crossbeam are arranged on the opposite two side walls of the extrusion piece A, corresponding to the two ends of the crossbeam, the opposite two side walls of the die profiling hole 11 are formed with a reinforced cooling section, and the heat conduction pipe piece 2 is provided with two. In the embodiment, the two heat conduction pipe pieces 2 are used to cool the two reinforced cooling sections respectively, so that the two ends of the crossbeam are cooled at the same time, the rapid cooling and shaping of the crossbeam is realized, and deformation and collapse are avoided.

[0046] It should be noted that the extrusion piece A can have multiple crossbeams or other complex structures, the area where the ends of the crossbeams are located, and the area corresponding to the complex structure, and the corresponding reinforced cooling section is formed on the inner side wall of the die profiling hole 11, so that the complex structure is rapidly cooled and shaped.

[0047] Specifically, the heat conduction pipe piece 2 is a metal cooling pipe, which can quickly conduct heat to the reinforced cooling section through the heat conduction of the metal. In the embodiment, the metal cooling pipe is a copper pipe. The heat conduction efficiency is good, and the cost is low.

[0048] On the other hand, the device body 1 is also formed with a cooling channel 12, the cooling channel 12 is arranged around the outer side of the die profiling hole 11, and the cooling channel 12 is used to transport cooling liquid. In the embodiment, the die profiling hole 11 is arranged in the extrusion piece A, the cooling channel 12 is arranged around the die profiling hole 11, the cooling liquid is transported into the cooling channel 12 when the extrusion piece A is inserted into the die profiling hole 11, and the cooling liquid quickly takes away the temperature around the die profiling hole 11, so that the extrusion piece A is rapidly and preliminarily cooled in the die profiling hole 11, and the overall shape of the extrusion piece A is ensured not to soften and collapse. At the same time, the preliminary cooling in the shaping device 100 improves the extrusion efficiency.

[0049] It should be noted that the cooling channel 12 is arranged around the die profiling hole 11, and specifically, in an embodiment provided in the embodiment, the cooling channel 12 includes an inlet and outlet section arranged in parallel and a connecting section connecting the inlet and outlet section, the inlet and outlet section and the connecting section together form a U-shaped structure surrounding space, and the die profiling hole 11 is located in the surrounding space, so as to cool the periphery of the die profiling hole 11.

[0050] Further, the device body 1 is also provided with an inspection hole communicated to the cooling channel 12, and a plug head 13 is arranged in the inspection hole, which is used to close the inspection hole. In the embodiment provided in the embodiment, the temperature around the mold profiling hole 11 is reduced by the flowing of the cooling liquid in the cooling channel 12, and during the long-term use of the cooling liquid, the cooling liquid in the cooling channel 12 may be blocked due to impurities. Therefore, in the embodiment, the cooling liquid in the cooling channel 12 and the channel condition are probed by the inspection hole, and when the detection is not needed, the inspection hole is closed by the plug head 13, so that the cooling channel 12 can be normally used.

[0051] On the other hand, in order to ensure the cooling effect, the cooling channel 12 is provided with a plurality of cooling channels 12, which are arranged at intervals along the extension direction of the mold profiling hole 11. In the embodiment, a plurality of cooling channels 12 are arranged, and the mold profiling hole 11 is cooled to a certain extent every interval, so that the cooling effect is improved, and the temperature of the cooling liquid is prevented from being excessively increased due to the single cooling channel 12 surrounding the whole cooling channel 12, and the refrigeration effect of the water outlet section is weakened.

[0052] It should be noted that in the embodiment, the cooling liquid can be cooling water, which has low cost and good heat absorption effect.

[0053] In addition, in the embodiment, the shaping device 100 further comprises an inlet pipeline 121 and an outlet pipeline 122, which are communicated to both ends of the cooling channel 12, so as to convey the cooling liquid.

[0054] It should be noted that in the embodiment, the cooling channel 12 simultaneously exchanges heat with the heat conduction pipe 2, so as to ensure that the heat conduction pipe 2 warms up the reinforced cooling section.

[0055] In the embodiment provided in the embodiment, the heat conduction pipe 2 is partially arranged in the cooling channel 12, so as to exchange heat with the cooling liquid in the cooling channel 12.

[0056] On the other hand, the device body 1 is also provided with an air extraction hole communicated to the inner side wall of the mold profiling hole 11, which is used to extract the air between the inner side wall of the mold profiling hole 11 and the extruded part A. During the conveying of the extruded part A through the mold profiling hole 11, the extruded part A may be collapsed due to the insufficient adhesion between the inner side wall of the mold profiling hole 11 and the extruded part A. Therefore, in the embodiment, the air extraction hole is communicated to the inner side wall of the mold profiling hole 11, and a vacuum state is formed between the inner side wall of the mold profiling hole 11 and the extruded part A through the air extraction hole, so that the extruded part A is pressed and held on the inner side wall of the mold profiling hole 11, thereby avoiding the deformation, collapse and uneven cooling.

[0057] In the embodiment, the air extraction hole is provided with a plurality of holes to uniformly extract the space between the extruded part A and the inner wall of the mold profiling hole 11.

[0058] In addition, the shaping device 100 further comprises an air extraction pipeline 3 connected to the air extraction hole to extract air.

[0059] In summary, the embodiment provides a specific embodiment, in which the extruded part A has a crossbeam formed therein, and the cross-sectional shapes of the two sides of the crossbeam are different. Special attention is paid to cooling the crossbeam part during cooling.

[0060] The device body 1 is further provided with a heat conduction pipe 2 arranged in parallel with the mold profiling hole 11. The heat conduction pipe 2 is arranged corresponding to the crossbeam part to strengthen local cooling, reduce crossbeam deformation, and improve efficiency.

[0061] Meanwhile, the heat conduction pipe 2 can be provided with two heat conduction pipes 2 arranged on both sides of the mold profiling hole 11, i.e., the two ends of the crossbeam, to simultaneously cool both sides.

[0062] Based on the above-described shaping device 100, the embodiment further provides an extrusion molding system, which comprises the above-described shaping device 100 and has all the technical features of the above-described shaping device 100. Therefore, it also has the technical effects brought by all the technical features, which will not be described here.

[0063] The embodiment provides an extrusion molding system, which is described below with reference to Figures 4-5 and further comprises an extruder 200 and an extrusion die head 300. The extruder has a discharge port for conveying molten material outward. The extrusion die head 300 has an open material model cavity formed therein, which is connected to the discharge port of the extruder. The mold profiling hole 11 is arranged corresponding to the opening of the material model cavity to jointly convey the extruded part A.

[0064] In the extrusion molding system provided in the embodiment, the extruder receives raw materials, melts them, and then performs screw extrusion to send the molten material into the material model cavity of the extrusion die head 300. The molten material forms the required shape in the material model cavity and is conveyed into the mold profiling hole 11 after molding for preliminary cooling and shaping. In the embodiment, the extruder, the extrusion die head 300, and the shaping device 100 cooperate to form a basic extrusion system, which facilitates the production of plastic extrusion.

[0065] It should be noted that in the production of the extruded part A with an internal crossbeam, it is necessary to ensure that the crossbeam does not deform.

[0066] Further, the cross section of the die profiling hole 11 comprises two oppositely arranged beam bearing surfaces; the width direction between the two beam bearing surfaces is the beam extending direction, and the beam extending direction is arranged vertically; wherein the inner side wall of the beam bearing surface forms a reinforced cooling section. In this embodiment, the beam bearing surface is arranged to correspond to the beam of the extruded part A, and the width direction of the beam bearing surface is the beam extending direction, so that the beam extending direction is arranged vertically, and the beam inside the extruded part A is in a vertical state, which can reduce the self-weight deformation of the die beam.

[0067] In this embodiment, the two beam bearing surfaces form a beam group, and multiple beam groups can be arranged to bear the extruded part A with multiple beams inside.

[0068] It should be noted that the multiple beams must be arranged in parallel, and for the beams arranged in a cross manner, only the main beams are vertically maintained in this embodiment.

[0069] It should be noted that in order to avoid deformation of the extruded part A, the opening of the extrusion die head 300 is also arranged to correspond to the die profiling hole 11, that is, the beam of the extruded part A is vertically discharged to avoid deformation of the extruded part A.

[0070] On the other hand, referring to Figure 6 , the extrusion die head 300 is also provided with an air inlet hole 4, which is communicated to the end of the material model cavity far from the opening, for blowing cooling gas into the cavity of the extruded part inside the material model cavity. In this embodiment, in order to further accelerate the cooling of the beam inside the extruded part A, cooling gas is blown into the extruded part A from the other end of the material model cavity during discharging, so that the beam part is cooled by the cooling gas during discharging, ensuring the stability of the beam structure and avoiding deformation of the beam.

[0071] Further, the extrusion die head 300 further comprises a gas supply pipeline which is communicated to the air inlet hole 4 to supply cooling gas into the air inlet hole 4.

[0072] It should be noted that the other end of the material model cavity is provided with multiple air ports communicated to the air inlet hole 4, so as to simultaneously supply cooling gas to different areas inside the cavity of the extruded part A, ensuring simultaneous cooling of the internal structure.

[0073] Specifically, in the case where there is only one beam inside the extruded part A, the extruded part A comprises two cavities on both sides of the beam; two air ports corresponding to the air inlet hole are formed on the end face of the other end of the material model cavity, so as to simultaneously cool the two sides of the beam and avoid slight deformation caused by one-sided cooling. Similarly, in the case where there are multiple beams, more air ports can be arranged.

[0074] In the embodiment, the extrusion molding system further comprises a cooling water tank 400, a traction device 500 and a cutting device 600 arranged in sequence; the cooling water tank 400 is arranged corresponding to the die profiling hole of the shaping device 100, used to receive the extruded piece A and cool it; the traction device 500 is used to pull the extruded piece A to move; the cutting device 600 is used to cut the extruded piece A into a preset size length. In the embodiment, the extruder 200 is in communication with the material inlet of the extrusion die head 300; the extrusion die head 300 is connected downstream of the shaping device 100; the blank is cooled and shaped in the shaping device 100 to form a pipe blank, and then enters the downstream cooling water tank 400 to form a product after being cooled in the cooling water tank 400; and then the traction device 500 pulls it to move to the cutting device 600 for cutting.

[0075] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments, but not to limit them; although the foregoing embodiments have been described in detail, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments.

Claims

1. A setting device (100), characterized in that, The application relates to a shaping device (100) for extrusion molding, which comprises the following parts: a device body (1) provided with a die profiling hole (11) for conveying an extrusion piece (A), wherein the inner side wall of the die profiling hole (11) is provided with a reinforced cooling section; a heat conduction pipe (2) penetrating through the device body (1), wherein the extension direction of the heat conduction pipe (2) is the same as that of the die profiling hole (11), and the heat conduction pipe (2) is arranged at the side of the reinforced cooling section; and a heat exchange structure arranged in the device body (1) and used for heat exchange with the die profiling hole (11). The cross section of the die profiling hole (11) comprises two oppositely arranged beam bearing surfaces. The width direction between the two beam bearing surfaces is the beam extension direction, and the beam extension direction is arranged vertically. The beam bearing surface forms the reinforced cooling section. The heat conduction pipe (2) is arranged in two, and the two heat conduction pipes (2) are arranged at the two ends of the beam respectively.

2. The sizing device (100) according to claim 1, characterized in that The device body (1) is further provided with a cooling channel (12) arranged around the outer side of the die profiling hole (11), and the cooling channel (12) is used for conveying cooling liquid. The cooling channel (12) forms the heat exchange structure.

3. The sizing device (100) according to claim 2, characterized in that The device body (1) is further provided with an inspection hole (13) connected to the cooling channel (12). The shaping device (100) further comprises a plug head (13) used for sealing the inspection hole.

4. The sizing device (100) according to claim 2, characterized in that The cooling channel (12) is arranged in multiple, and the multiple cooling channels (12) are arranged at intervals along the extension direction of the die profiling hole (11).

5. The sizing device (100) according to claim 1, characterized in that The device body (1) is further provided with an air extraction hole (13) connected to the inner side wall of the die profiling hole (11), and the air extraction hole (13) is used for extracting air between the inner side wall of the die profiling hole and the extrusion piece.

6. An extrusion molding system characterized by, The application relates to an extrusion molding system, which comprises the following parts: an extruder (200) provided with a discharge port used for conveying molten material; an extrusion die head (300) provided with a material model cavity with one end being open, and the material model cavity is connected to the discharge port of the extruder (200); and the shaping device (100) in any one of claims 1 to 5; wherein the die profiling hole (11) is arranged at the opening of the material model cavity and used for conveying the extrusion piece (A) together; the extrusion die head (300) is further provided with an air inlet hole (4) connected to the end of the material model cavity far from the opening and used for blowing cooling gas into the cavity of the extrusion piece (A) in the material model cavity.

7. The extrusion molding system of claim 6, wherein The extrusion molding system further comprises a cooling water tank (400), a traction device (500) and a cutting device (600) arranged in sequence. The cooling water tank (400) is arranged at the die profiling hole of the shaping device (100) and used for receiving and cooling the extrusion piece (A). The traction device (500) is used for driving the extrusion piece (A) to move. The cutting device (600) is used for cutting the extrusion piece (A).

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