A pipe production apparatus

Abstract

The utility model discloses a pipe production equipment, including forming device, shaping device and traction device, and forming device is used for heating plastic particle and extruding pipe workpiece, shaping device includes precooling shaping subassembly and vacuum box, and one end of precooling shaping subassembly is connected with the extrusion port of forming device, and a part of precooling shaping subassembly is arranged in the vacuum box, traction device is arranged in the side of vacuum box away from forming device, and traction device is used for drawing pipe workpiece to pass through precooling shaping subassembly, the utility model discloses can promote the shaping effect to pipe workpiece, and reduces the defective rate.

Description

Technical Field

[0001] This utility model relates to the field of pipe manufacturing technology, and in particular to a pipe manufacturing equipment. Background Technology

[0002] Currently, the production of power and communication conduits mainly employs efficient and automated extrusion molding processes. During production, plastic granules are precisely mixed, heated and plasticized, and then continuously extruded into pipe blanks through specialized molds. These blanks are then shaped and cured. Depending on the type of plastic granules, the temperature, cooling rate, and setting time after extrusion vary. Existing pipe production equipment's shaping sleeves produce inconsistent results in shaping the outer diameter of the pipes. Slight deviations in the temperature or movement speed of the pipe workpiece from the process requirements can lead to poor shaping results. This places extremely high demands on the performance of the pipe production equipment and the skill level of the operators, easily resulting in defects and a high rate of defective products. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a pipe production equipment that improves the shaping effect of pipe workpieces and reduces the defect rate.

[0004] A pipe production device according to an embodiment of the present utility model includes: A molding device used to heat plastic granules and extrude pipe-shaped workpieces; The shaping device includes a pre-cooling and shaping component and a vacuum chamber. One end of the pre-cooling and shaping component is connected to the extrusion port of the molding device, and a part of the pre-cooling and shaping component is disposed inside the vacuum chamber. The traction device is located on the side of the vacuum chamber away from the forming device. The traction device is used to pull the tubular workpiece through the pre-cooling and shaping assembly.

[0005] A pipe production equipment according to an embodiment of the present utility model has at least the following beneficial effects: The high-temperature tubular workpiece extruded from the forming device first enters the pre-cooling and shaping assembly. This assembly rapidly cools the extruded workpiece, reducing its deformability and increasing its hardness. After pre-cooling, the workpiece's reduced temperature and increased rigidity significantly reduce elongation deformation caused by tensile forces during traction, while also preventing wrinkles due to excessively soft material during vacuum shaping. The pre-cooling and shaping assembly works in conjunction with the vacuum chamber to pre-cool and harden the high-temperature, unshaped tubular workpiece before drawing it into the pre-cooling and shaping assembly within the vacuum chamber. Here, the workpiece retains a certain residual temperature and deformability, allowing for better shaping under vacuum suction. Pre-cooling lowers the workpiece's temperature, improving the stability and accuracy of outer diameter shaping, reducing shaping defects caused by temperature fluctuations or deviations in process parameters, thus effectively reducing product defect rates and improving the overall yield of tubular production.

[0006] According to an embodiment of the present invention, a pipe production equipment includes a pre-cooling and shaping component comprising a pre-cooling and shaping sleeve and a chiller, wherein the pre-cooling and shaping sleeve and the chiller are connected by a pipe.

[0007] According to an embodiment of the present invention, a pipe production equipment includes a pre-cooling and shaping sleeve comprising a pre-cooling section and a vacuum shaping section. The pre-cooling section is connected to the vacuum shaping section. The pre-cooling section is connected to a chiller through a pipe. The end of the pre-cooling section away from the vacuum shaping section is connected to the extrusion port of the forming device. The vacuum shaping section is installed in a vacuum chamber.

[0008] According to an embodiment of the present invention, a pipe production equipment includes a vacuum shaping section comprising a plurality of shaping tubes and a connecting assembly. The plurality of shaping tubes are connected sequentially along their axis, and the plurality of shaping tubes are connected to a pre-cooling section through the connecting assembly.

[0009] According to an embodiment of the present invention, a pipe production equipment includes a connecting assembly comprising several screws, several nuts, and a flange. The flange is disposed at one end of a shaping pipe away from the precooling section. One end of several screws is connected to the precooling section, and the other end of several screws passes through the flange and is connected to the nut.

[0010] According to an embodiment of the present utility model, a pipe production equipment has a pre-cooling section equipped with an inlet pipe and an outlet pipe, which are connected to each other and are respectively connected to a chiller.

[0011] According to an embodiment of the present invention, a pipe production equipment includes a forming device comprising an extruder and an extrusion die, wherein the extrusion die is disposed between the extruder and a pre-cooling and shaping component.

[0012] According to an embodiment of the present invention, a pipe production equipment has a heating jacket covering the periphery of the extrusion die.

[0013] According to an embodiment of the present invention, a pipe production equipment is provided in a vacuum chamber, which is further provided with a spray module and a water collection tank. The water collection tank is located at the bottom of the vacuum chamber, and the spray module is located above the water collection tank.

[0014] According to an embodiment of the present invention, a pipe production equipment includes a water collection tank and a spray module, which are respectively connected to a chiller via pipes.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a pipe production equipment and a pipe according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of a pre-cooling and shaping sleeve for a pipe production equipment according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of a pre-cooling and shaping sleeve for a pipe production equipment according to another embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: Forming device 100; extruder 110; extrusion die 120; heating jacket 130; Pre-cooling and shaping sleeve 200; pre-cooling section 210; outer sleeve 211; water inlet pipe 212; water outlet pipe 213; vacuum shaping section 220; shaping tube 221; screw 222; nut 223; flange 224; Chiller 300; Vacuum chamber 400; spray module 410; water collection tank 420; vacuum pump 430; 500 traction devices; Pipe workpiece 600. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of a utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first" and "second" are used, they are merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Current pipe production equipment exhibits inconsistent results in shaping the outer diameter of pipes, easily leading to defects and a high rate of defective products. Furthermore, depending on the type of plastic granule raw material, the temperature, cooling rate, and shaping time after pipe extrusion vary. Existing pipe production equipment's shaping sleeves are difficult to adapt well to the process requirements of manufacturing pipes from different plastic granule raw materials, necessitating the customization of various shaping sleeves of different specifications and lengths, which is cumbersome and occupies a significant amount of workshop space.

[0023] Reference Figures 1 to 3 This utility model provides a pipe production equipment, including a forming device 100, a shaping device and a traction device 500. The forming device 100 is used to heat plastic granule raw materials and extrude pipe workpieces 600. Specifically, plastic granule raw materials are continuously fed into the forming device 100. The forming device 100 heats and melts these plastic granule raw materials and extrudes them into high-temperature pipe workpieces 600 according to the required pipe shape.

[0024] The shaping device includes a pre-cooling and shaping component and a vacuum chamber 400. One end of the pre-cooling and shaping component is connected to the extrusion port of the forming device 100, and a portion of the pre-cooling and shaping component is disposed inside the vacuum chamber 400. Specifically, a vacuum pump 430 is provided on one side of the vacuum chamber 400, and the vacuum pump 430 is connected to the vacuum chamber 400 to achieve vacuuming inside the vacuum chamber 400. The pre-cooling and shaping component is used to rapidly pre-cool the high-temperature tubular workpiece 600 to reduce the deformability of the tubular workpiece 600 and increase its hardness; the pre-cooling and shaping component also works in conjunction with the vacuum chamber 400 to adsorb and shape the tubular workpiece 600, which still has a certain degree of deformability.

[0025] A traction device 500 is located on the side of the vacuum chamber 400 away from the forming device 100. The traction device 500 is used to pull the tubular workpiece 600 through the pre-cooling and shaping assembly. The traction device 500 pulls the cooled and shaped tubular workpiece 600, which, during its continuous movement, pulls the connected, hot, and unshaped tubular workpiece 600. This allows the hot, unshaped tubular workpiece 600, after being extruded from the extrusion port of the forming device 100, to move and pass through the pre-cooling and shaping assembly, thus achieving cooling and shaping of the tubular workpiece 600. The traction device 500 can also be used to push the tubular workpiece 600 to subsequent cutting processes.

[0026] The high-temperature tubular workpiece 600 extruded from the forming device 100 first enters the pre-cooling and shaping component. This component rapidly cools the high-temperature tubular workpiece 600, reducing its deformability and increasing its hardness. After pre-cooling, the tubular workpiece 600, due to its lower temperature and increased rigidity, significantly reduces elongation deformation caused by tensile force during traction, while also preventing wrinkles from forming during vacuum adsorption shaping due to excessively soft material. The pre-cooling and shaping component works in conjunction with the vacuum chamber 400 to first pre-cool and harden the high-temperature, unshaped tubular workpiece 600 before drawing it into the pre-cooling and shaping component within the vacuum chamber 400. At this point, the tubular workpiece 600 still retains a certain residual temperature and deformability, allowing for better shaping under vacuum suction. By pre-cooling to reduce the temperature of the pipe workpiece 600, the stability and accuracy of the outer diameter shaping of the pipe workpiece 600 are improved, and the shaping defects caused by temperature fluctuations or deviations in moving speed from process parameters are reduced, thereby effectively reducing the product defect rate and improving the overall yield of pipe production.

[0027] According to some embodiments of this application, refer to Figure 1The precooling and shaping component includes a precooling and shaping sleeve 200 and a chiller 300, which are connected by pipes. A circulating water circuit is formed between the chiller 300 and the precooling and shaping component. The chiller 300 provides chilled water to the precooling and shaping component, and the chilled water absorbs heat in the precooling and shaping component and can flow back to the chiller 300, improving the precooling effect and reducing water waste.

[0028] Furthermore, referring to Figure 2 The pre-cooling and shaping sleeve 200 includes a pre-cooling section 210 and a vacuum shaping section 220. The pre-cooling section 210 and the vacuum shaping section 220 are connected. The pre-cooling section 210 is connected to a chiller 300 through a pipe. The end of the pre-cooling section 210 away from the vacuum shaping section 220 is connected to the extrusion port of the forming device 100. The vacuum shaping section 220 is installed in a vacuum chamber 400. Specifically, the pre-cooling section 210 is fixedly connected to one axial side of the vacuum shaping section 220. The high-temperature tubular workpiece 600 extruded from the forming device 100 first enters the pre-cooling section 210, where it is pre-cooled. After pre-cooling, the tubular workpiece 600 enters the vacuum shaping section 220 for shaping.

[0029] As a preferred option, refer to Figure 1 The precooling section 210 is directly and sealed to the side wall of the vacuum chamber 400 at a position near the vacuum shaping section 220 and located radially outside the vacuum shaping section 220, so that the entire vacuum shaping section 220 is located inside the vacuum chamber 400, which simplifies the structure and improves the shaping effect on the tubular workpiece 600 inside the vacuum shaping section 220.

[0030] Furthermore, referring to Figure 2 The vacuum shaping section 220 includes several shaping tubes 221 and connecting components. The shaping tubes 221 are connected sequentially along their axis, and are connected to the pre-cooling section 210 via the connecting components. Specifically, one end of each shaping tube 221 has a positioning groove, and the other end has a positioning protrusion. The positioning protrusion of one shaping tube 221 matches the positioning groove of another shaping tube 221, facilitating the sequential positioning and connection of the two shaping tubes 221 along their axis. Specifically, the inner wall structure of the shaping tube 221 matches the outer wall structure of the tubular workpiece 600. Multiple through grooves are evenly spaced on the sidewall of the shaping tube 221, connecting the interior and exterior of the shaping tube 221. This allows the negative pressure within the vacuum chamber 400 to be better transmitted to various positions within the shaping tube 221, enabling the tubular workpiece 600 to be more evenly drawn towards the inner wall of the shaping tube 221 when passing through it, thus achieving a better shaping effect. (Refer to...) Figure 2 In one embodiment, three shaping tubes 221 are connected sequentially along their axis, and one end of one of the shaping tubes 221 is connected to the precooling section 210.

[0031] It is understood that, in some other embodiments, reference is made to... Figure 3 When the required length of the vacuum shaping section 220 is short, two shaping tubes 221 can be connected in sequence along their axis, with one end of one of the shaping tubes 221 connected to the precooling section 210.

[0032] Understandably, when the required length of the vacuum shaping section 220 is shorter, only one shaping tube 221 can be used, one end of which is connected to the precooling section 210.

[0033] Furthermore, referring to Figure 2 The connecting assembly includes several screws 222, several nuts 223, and a flange 224. The flange 224 is located at one end of a shaping tube 221 away from the pre-cooling section 210. One end of each screw 222 is connected to the pre-cooling section 210, and the other end of each screw 222 passes through the flange 224 and connects to the nuts 223. Specifically, the flange 224 has several through holes (not shown in the figure) corresponding to the screws 222. The screws 222 pass through the through holes of the flange 224 and connect to the nuts 223. The nuts 223 limit and press the flange 224 against one end of the shaping tube 221 away from the pre-cooling section 210. The shaping tube 221 transmits pressure sequentially to all the shaping tubes 221, thereby pressing all the shaping tubes 221 against the pre-cooling section 210 and achieving the connection between the shaping tubes 221 and the pre-cooling section 210. When it is necessary to adjust the number of shaping tubes 221, simply loosen the nut 223, remove the flange 224, then remove the specified number of shaping tubes 221 or add the specified number of shaping tubes 221, and then tighten the nut 223 again, using the flange 224 to press several shaping tubes 221 together.

[0034] It is understood that in some other embodiments, the precooling section 210 near the shaping tube 221 has several screw holes (not shown in the figure) corresponding to several screws 222. The screws 222 are threadedly connected to the screw holes, which facilitates the removal or replacement of the screws 222 from the precooling section 210. When the required length of the vacuum shaping section 220 is greater than the length of the screws 222, it is also convenient to replace the screws 222 with longer ones to increase the length of the vacuum shaping section 220.

[0035] According to some embodiments of this application, refer to Figure 2The precooling section 210 is equipped with an inlet pipe 212 and an outlet pipe 213, which are connected to each other and respectively connected to the chiller 300. Specifically, the precooling section 210 also includes an outer casing 211 and an inner pipe (not shown in the figure). The inner pipe allows the high-temperature tubular workpiece 600 to pass through, and the outer casing 211 is disposed around the inner pipe. The outer casing 211 and the inner pipe are matched to form a cooling chamber (not shown in the figure). The inlet pipe 212 and the outlet pipe 213 are respectively connected to the cooling chamber. The chilled water provided by the chiller 300 flows through the pipe to the inlet pipe 212 and enters the cooling chamber from the inlet pipe 212. The chilled water exchanges heat with the inner pipe and the tubular workpiece 600 in the cooling chamber, and then flows out from the outlet pipe 213 and returns to the chiller 300.

[0036] As a preferred option, refer to Figure 2 Multiple inlet pipes 212 and multiple outlet pipes 213 are provided. Multiple inlet pipes 212 are respectively located on opposite sides of the outer jacket 211, and multiple outlet pipes 213 are respectively located on the other opposite sides of the outer jacket 211. The line connecting the multiple inlet pipes 212 and the line connecting the multiple outlet pipes 213 are perpendicular to each other, so that the cold water flows more evenly in the cooling chamber and improves the pre-cooling effect.

[0037] According to some embodiments of this application, refer to Figure 1 The forming apparatus 100 includes an extruder 110 and an extrusion die 120, with the extrusion die 120 disposed between the extruder 110 and the pre-cooling and shaping assembly. Specifically, the extrusion die 120 is connected to the outlet of the extruder 110. The plastic granule raw material is heated and melted into a liquid state and enters the extrusion die 120 from the outlet of the extruder 110. After being extruded and formed by the extrusion die 120, a high-temperature pipe workpiece 600 is obtained.

[0038] Furthermore, referring to Figure 1 The extrusion mold 120 is surrounded by a heating jacket 130. The heating jacket 130 covers the periphery of the extrusion mold 120 and can heat the extrusion mold 120 to improve the extrusion molding effect of high temperature liquid plastic in the extrusion mold 120 and prevent the plastic from cooling prematurely in the extrusion mold 120 and causing blockage.

[0039] According to some embodiments of this application, refer to Figure 1 The vacuum chamber 400 also includes a spray module 410 and a water collection tank 420. The water collection tank 420 is located at the bottom of the vacuum chamber 400, and the spray module 410 is located above the water collection tank 420. Specifically, refer to... Figure 1The spray module 410 includes multiple spray heads, which are spaced apart along the length of the vacuum chamber 400. The spray module 410 is used to spray cooling water onto the vacuum shaping section 220 and the tubular workpiece 600. By cooperating with the vacuum chamber 400, the spray module 410 can simultaneously perform vacuuming and cooling on the vacuum shaping section 220 and the tubular workpiece 600 inside the vacuum chamber 400. The negative pressure is used to tightly suck the soft tubular workpiece 600 against the inner wall of the shaping sleeve, and the cooling effect of the spray module 410 is used to achieve complete hardening of the tubular workpiece 600, thereby improving the forming quality of the tubular workpiece 600.

[0040] Furthermore, the water collection tank 420 and the spray module 410 are respectively connected to the chiller 300 through pipes. Specifically, the chiller 300 can output chilled water to the spray module 410, and the spray module 410 sprays the chilled water onto the vacuum forming section 220 and the tubular workpiece 600. After heat exchange, the water falls into the water collection tank 420, and the water in the water collection tank 420 can flow back to the chiller 300 through pipes to form a circulating water path, so as to improve the spray cooling effect and save water resources.

[0041] Working principle: Plastic granules are continuously fed into the extruder 110. The extruder 110 heats and melts these plastic granules and outputs them to the extrusion die 120. After being extruded and shaped by the extrusion die 120, a high-temperature pipe workpiece 600 is obtained. Under the traction of the traction device 500, the pipe workpiece 600 passes sequentially through the pre-cooling section 210 and the vacuum shaping section 220 of the pre-cooling and shaping sleeve 200. The pre-cooling section 210 cools the pipe workpiece to reduce its deformability to a certain extent. The pipe workpiece 600, which maintains a certain residual temperature and a certain deformation capacity, is vacuum-shaped by the cooperation of the vacuum shaping section 220 and the vacuum box 400. At the same time, it is sprayed with cold water by the spray module 410, which finally realizes the shaping and cooling hardening of the pipe workpiece 600. Then, it is pushed to the subsequent process by the traction device 500.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pipe manufacturing equipment, characterized in that, include: A molding device (100) is used to heat plastic granule raw materials and extrude pipe workpieces (600). The shaping device includes a pre-cooling shaping component and a vacuum chamber (400), one end of which is connected to the extrusion port of the forming device (100), and a portion of which is disposed inside the vacuum chamber (400). A traction device (500) is disposed on the side of the vacuum chamber (400) away from the forming device (100), and the traction device (500) is used to pull the tubular workpiece (600) through the pre-cooling and shaping assembly.

2. The pipe production equipment according to claim 1, characterized in that, The precooling and shaping assembly includes a precooling and shaping sleeve (200) and a chiller (300), and the precooling and shaping sleeve (200) and the chiller (300) are connected by a pipe.

3. The pipe production equipment according to claim 2, characterized in that, The precooling and shaping sleeve (200) includes a precooling part (210) and a vacuum shaping part (220). The precooling part (210) is connected to the vacuum shaping part (220). The precooling part (210) is connected to the chiller (300) through a pipe. The end of the precooling part (210) away from the vacuum shaping part (220) is connected to the extrusion port of the molding device (100). The vacuum shaping part (220) is installed in the vacuum box (400).

4. The pipe production equipment according to claim 3, characterized in that, The vacuum shaping section (220) includes a plurality of shaping tubes (221) and a connecting assembly. The plurality of shaping tubes (221) are connected sequentially along their axis. The plurality of shaping tubes (221) are connected to the precooling section (210) through the connecting assembly.

5. The pipe production equipment according to claim 4, characterized in that, The connecting assembly includes a plurality of screws (222), a plurality of nuts (223), and a flange (224). The flange (224) is located at one end of a shaping tube (221) away from the precooling section (210). One end of the plurality of screws (222) is connected to the precooling section (210), and the other end of the plurality of screws (222) passes through the flange (224) and is connected to the nuts (223).

6. The pipe production equipment according to claim 3, characterized in that, The precooling section (210) is provided with an inlet pipe (212) and an outlet pipe (213). The inlet pipe (212) and the outlet pipe (213) are connected to each other and are respectively connected to the chiller (300).

7. The pipe production equipment according to claim 1, characterized in that, The forming apparatus (100) includes an extruder (110) and an extrusion die (120), the extrusion die (120) being disposed between the extruder (110) and the precooling and shaping assembly.

8. The pipe production equipment according to claim 7, characterized in that, The extrusion die (120) is surrounded by a heating jacket (130).

9. A pipe production equipment according to claim 2, characterized in that, The vacuum chamber (400) is also equipped with a spray module (410) and a water collection tank (420). The water collection tank (420) is located at the bottom inside the vacuum chamber (400), and the spray module (410) is located above the water collection tank (420).

10. A pipe production equipment according to claim 9, characterized in that, The water collection tank (420) and the spray module (410) are respectively connected to the chiller (300) through pipes.

Images