Plastic airway tube forming equipment

Abstract

The invention discloses a plastic air duct forming device, which relates to the technical field of plastic forming devices, and comprises a machine base, a forming hole, a forming core rod, an ejection mechanism, a fixing cover, an injection hole seat, an injection cavity, a cooling mechanism, a bending mechanism, an injection hole and an injection groove; the cooling mechanism provided in the invention can cool and shape all the air ducts after extrusion forming, thereby improving the forming efficiency of all the air ducts, and thus improving the production efficiency; the spiral blades provided in the invention can ensure that the coolant moves downward in a spiral manner along the spiral blades in the cooling cavity, thereby improving the uniformity of cooling, and thus improving the quality of the air duct after cooling and shaping; the second starting motor in the invention can drive all the sliders to extend, and all the sliders can be extended to bend and shape the air ducts with residual heat through the third bending groove wheel, thereby avoiding the low efficiency caused by the subsequent heating and bending.

Description

Technical Field

[0001] The invention relates to the technical field of plastic molding equipment, in particular to a plastic air guide tube molding equipment. Background Art

[0002] An air duct is a pipe that guides gas from one place to another. The types of air ducts include: metal air ducts, non-metal air ducts, high-pressure air ducts, low-pressure air ducts, high-temperature air ducts, low-temperature air ducts, corrosive air ducts, non-corrosive air ducts, harmful air ducts, harmless air ducts, etc.

[0003] The air duct mainly utilizes the naturally generated air pressure difference inside and outside the air duct, and cooperates with the external wind pressure to expel the polluted air in the air duct, and introduces fresh air from the outside to achieve the effect of ventilation and heat dissipation. The air duct requires a large number of elbows in actual use, and the existing plastic air duct has a relatively low molding efficiency, especially the inner wall of the formed plastic elbow is not smooth enough, which makes the air guiding process prone to generate a lot of noise, and also makes the service life relatively short.

[0004] Chinese patent 202222463997.7 discloses an air guide tube bending device, which improves the processing rate, but there is still a problem that the inner wall of the plastic bent tube after molding is not smooth enough, which makes it easy for the air guide process to generate a lot of noise. Summary of the invention

[0005] The purpose of the present invention is to provide a plastic air guide tube forming device in order to solve the above-mentioned problems, thereby solving the problem that the existing plastic air guide tube forming efficiency is relatively low, especially the inner wall of the plastic bent tube after forming is not smooth enough, which makes the air guide process easy to generate a lot of noise, and also makes the service life relatively short during use.

[0006] In order to solve the above problems, the present invention provides a technical solution: a plastic air guide tube molding device, including a machine base, a molding hole, a molding core rod, an ejection mechanism, a fixed cover, an injection hole seat, an injection cavity, a cooling mechanism, a bending mechanism, an injection hole and an injection groove; there are several molding holes, several molding holes are arranged in a circular shape and are opened inside the machine base, and injection grooves are opened around the center of several molding holes; the fixed cover is fixedly connected to the opening on the upper side of the machine base, and several molding core rods are fixedly connected around the lower side of the fixed cover, and the lower sides of the molding core rods are respectively located in the center of the corresponding forming hole; the ejection mechanism is arranged inside the upper side of the machine base, and the lower side of the ejection mechanism is respectively connected with the upper side of the corresponding forming hole; the injection cavity is arranged inside the center of the machine base, and a plurality of injection holes are opened around the injection cavity, and the outer outlets of the injection holes are respectively connected with the corresponding injection grooves; the upper outer side of the injection hole seat is fixedly connected to the central inner part of the fixed cover, and the lower opening of the injection hole seat is connected with the center of the upper side of the injection cavity; the bending mechanism is arranged inside the lower side of the machine base, and the bending mechanism is respectively arranged on the lower side of the corresponding forming hole.

[0007] Preferably, the specific structure of the ejection mechanism includes an ejection sleeve, a screw rod 1, an ejection seat, a sliding hole, a top cover, a motor 1, a transmission gear and a connecting gear; the ejection seat is movably connected to the inner part of the upper side of the machine base, and a plurality of sliding holes are opened around the ejection seat, and the interior of the sliding holes is movably connected to the outer part of the corresponding forming mandrel; there are a plurality of ejection sleeves, and the interiors of a plurality of the ejection sleeves are movably connected to the outer part of the corresponding forming mandrel, and the tops of a plurality of the ejection sleeves are fixedly connected to the bottom of the ejection seat; the top cover is fixedly connected to the opening on the upper side of the fixed cover; the connecting gear is movably connected to the inner part of the upper side of the fixed cover; there are a plurality of screw rods 1, and the outer parts of the upper sides of a plurality of the screw rods are movably connected to the inner parts around the fixed cover, and the outer parts of the upper sides of a plurality of the screw rods are fixedly connected with transmission gears, and the transmission gears are connected to the connecting gear, and the outer threads on the lower sides of a plurality of the screw rods are respectively connected to the threaded holes arranged around the ejection seat; the motor 1 is fixedly connected to the top of the fixed cover, and the output shaft on the lower side of the motor is fixedly connected to the center of the upper side of one of the screw rods 1.

[0008] Preferably, the motor 1 is a servo motor or a stepper motor.

[0009] Preferably, the specific structure of the cooling mechanism includes an annular cavity 1, a connecting hole 1, a cooling cavity, a spiral blade, an input connector, annular cavity 2, a connecting hole 2 and an output connector; the annular cavity 1 is arranged inside the central part of the machine base, and an input connector is provided at the right opening of the annular cavity 1; the annular cavity 2 is located on the lower side of the annular cavity, and the annular cavity 2 is arranged inside the central part of the machine base, and an output connector is provided at the left opening of the annular cavity 2; there are several cooling cavities, and several of the cooling cavities are respectively located around the lower side of the corresponding forming holes and arranged inside the machine base, and spiral blades are fixedly connected inside several of the cooling cavities, the upper sides of several of the cooling cavities are connected with the upper side of the inner part of the annular cavity 1 through the connecting hole 1, and the lower sides of several of the cooling cavities are connected with the lower side of the inner part of the annular cavity 2 through the connecting hole 2.

[0010] Preferably, the specific structure of the bending mechanism includes motor 2, screw 2, connecting seat, connecting rod, driving chamber, bending groove, bending groove wheel 1, bending groove wheel 2, bending groove wheel 3, slider and slide groove; the driving chamber is arranged in the central interior of the lower side of the machine base, screw 2 is movably connected to the center of the driving chamber, several slide grooves are arranged around the lower side of the driving chamber, and sliders are movably connected inside the slide grooves; motor 2 is fixedly connected to the lower central side of the machine base, and the output shaft of the lower side of motor 2 is fixedly connected to the center of the upper side of screw 2; the threaded hole arranged in the center of the connecting seat is connected to screw 2 connected; there are several connecting rods, and the upper sides of several connecting rods are movably connected to the inside of the connecting seat, and the lower sides of several connecting rods are movably connected to the upper inner sides of the corresponding sliders; there are several bending grooves, and several bending grooves are respectively located directly below the corresponding forming holes and arranged inside the lower side of the machine base, and the upper sides of several bending grooves are respectively movably connected with bending groove wheels 1 and bending groove wheels 2; there are several bending groove wheels 3, and several sliders are respectively located directly below the corresponding bending groove wheel 1, and the outer sides of several sliders are respectively movably connected to the inner sides of the outer sides of the corresponding sliders.

[0011] Preferably, the second motor is a servo motor or a stepper motor.

[0012] Preferably, the outer bending grooves of the bending groove wheel 1, the bending groove wheel 2 and the bending groove wheel 3 are all semicircular.

[0013] Preferably, the lower side of the forming mandrel is conical.

[0014] Preferably, the bottom surface of the injection cavity is conical.

[0015] The beneficial effects of the present invention are as follows: (1) The present invention has a reasonable and simple structure, low production cost, and convenient installation. The cooling mechanism provided here can cool and shape all the air guide tubes after extrusion molding, thereby improving the molding efficiency of all the air guide tubes, and thus improving the production efficiency.

[0016] (2) The spiral blades provided in the present invention can ensure that the coolant moves downward in a spiral manner along the spiral blades in the cooling chamber, thereby improving the uniformity of cooling and thus improving the quality of the air guide tube after cooling and shaping.

[0017] (3) In the present invention, starting motor 2 drives screw 2 to rotate, and the rotation of screw 2 causes the connecting seat to move downward, and the downward movement of the connecting seat causes all the sliders to extend through the connecting rod, and all the extended sliders can be bent and formed by the three pairs of bending groove wheels and the air guide tubes with residual heat, thereby avoiding the inefficiency caused by subsequent heating and bending.

[0018] (4) In the present invention, since the air guide tube is formed by bending, the smooth inner wall of the air guide tube is not affected, thereby reducing the noise generated during use and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 for Figure 1 Schematic diagram after bending.

[0021] Figure 3 This is a schematic diagram of the structure of the push mechanism.

[0022] Figure 4 It is a schematic diagram of the structure of the cooling mechanism.

[0023] Figure 5 It is a structural schematic diagram of the bending mechanism.

[0024] Figure 6 for Figure 5 Enlarged view of position A in the middle.

[0025] 1-machine base; 2-forming hole; 3-forming core rod; 4-ejection mechanism; 5-fixed cover; 6-injection hole seat; 7-injection cavity; 8-cooling mechanism; 9-bending mechanism; 10-injection hole; 11-injection groove; 41-ejection sleeve; 42-screw rod one; 43-ejection seat; 44-slide hole; 45-top cover; 46-motor one; 47-transmission gear; 48-connecting gear; 81-annular cavity one; 82-connecting hole one; 83-cooling cavity; 84-spiral blade; 85-input connector; 86-annular cavity two; 87-connecting hole two; 88-output connector; 91-motor two; 92-screw rod two; 93-connecting seat; 94-connecting rod; 95-driving cavity; 96-bending groove; 97-bending groove wheel one; 98-bending groove wheel two; 99-bending groove wheel three; 910-slider; 911-slide groove. DETAILED DESCRIPTION

[0026] like Figure 1and Figure 2 As shown, this specific embodiment adopts the following technical scheme: a plastic air guide tube molding device, including a machine base 1, a molding hole 2, a molding core rod 3, an ejection mechanism 4, a fixed cover 5, an injection hole seat 6, an injection cavity 7, a cooling mechanism 8, a bending mechanism 9, an injection hole 10 and an injection groove 11; there are several molding holes 2, several molding holes 2 are arranged in a circular shape and opened inside the machine base 1, and injection grooves 11 are opened around the center of several molding holes 2; the fixed cover 5 is fixedly connected to the upper opening of the machine base 1, and several molding core rods 3 are fixedly connected around the lower side of the fixed cover 5, and the lower sides of the molding core rods 3 are respectively located The inner center of the corresponding molding hole 2; the ejection mechanism 4 is arranged inside the upper side of the machine base 1, and the lower side of the ejection mechanism 4 is respectively connected to the upper side of the corresponding molding hole 2; the injection cavity 7 is arranged inside the center of the machine base 1, and the injection cavity 7 is surrounded by several injection holes 10, and the outer outlets of the injection holes 10 are respectively connected to the inner sides of the corresponding injection grooves 11; the upper outer side of the injection hole seat 6 is fixedly connected to the central inner part of the fixed cover 5, and the lower opening of the injection hole seat 6 is connected to the upper center of the injection cavity 7; the bending mechanism 9 is arranged inside the lower side of the machine base 1, and the bending mechanism 9 is respectively arranged on the lower side of the corresponding molding hole 2.

[0027] like Figure 3 As shown, the specific structure of the ejection mechanism 4 includes an ejection sleeve 41, a screw rod 42, an ejection seat 43, a sliding hole 44, a top cover 45, a motor 46, a transmission gear 47 and a connecting gear 48; the ejection seat 43 is movably connected to the upper side of the machine base 1, and a plurality of sliding holes 44 are provided around the ejection seat 43, and the interiors of the sliding holes 44 are movably connected to the exteriors of the corresponding forming mandrels 3; there are a plurality of ejection sleeves 41, and the interiors of the plurality of ejection sleeves 41 are movably connected to the exteriors of the corresponding forming mandrels 3, and the tops of the plurality of ejection sleeves 41 are fixedly connected to the bottoms of the ejection seats 43; the top cover 45 is fixedly connected to the ejection seat 43, and the ejection seat 43 is fixedly connected to the ejection seat 43. Connected to the opening on the upper side of the fixed cover 5; the connecting gear 48 is movably connected to the inner part of the upper side of the fixed cover 5; there are several screw rods 42, and the upper outer parts of several screw rods 42 are movably connected to the inner parts around the fixed cover 5 respectively, and the upper outer parts of several screw rods 42 are fixedly connected with transmission gears 47, and the transmission gears 47 are connected to the connecting gear 48, and the lower external threads of several screw rods 42 are respectively connected to the threaded holes arranged around the ejection seat 43; the motor 46 is fixedly connected to the top of the fixed cover 5, and the lower output shaft of the motor 46 is fixedly connected to the upper center of one of the screw rods 42.

[0028] Wherein, the motor 1 46 is a servo motor or a stepper motor, so that the motor 1 46 can be easily controlled by existing automation technology.

[0029] like Figure 4As shown, the specific structure of the cooling mechanism 8 includes an annular cavity 1 81, a connecting hole 1 82, a cooling cavity 83, a spiral blade 84, an input connector 85, annular cavity 2 86, a connecting hole 2 87 and an output connector 88; the annular cavity 1 81 is arranged inside the central periphery of the machine base 1, and an input connector 85 is arranged at the right opening of the annular cavity 1 81; the annular cavity 2 86 is located at the lower side of the annular cavity 1 81, the annular cavity 2 86 is arranged inside the central periphery of the machine base 1, and an output connector 88 is arranged at the left opening of the annular cavity 2 86; there are several cooling cavities 83, and several of the cooling cavities 83 are respectively located around the lower side of the corresponding forming hole 2 and arranged inside the machine base 1, and the spiral blades 84 are fixedly connected inside the several cooling cavities 83, and the upper sides of several of the cooling cavities 83 are connected with the upper side of the inner part of the annular cavity 1 81 through the connecting hole 1 82, and the lower sides of several of the cooling cavities 83 are connected with the lower side of the inner part of the annular cavity 2 86 through the connecting hole 2 87.

[0030] like Figure 5 and Figure 6 As shown, the specific structure of the bending mechanism 9 includes a motor 2 91, a screw 2 92, a connecting seat 93, a connecting rod 94, a driving chamber 95, a bending groove 96, a bending groove wheel 1 97, a bending groove wheel 2 98, a bending groove wheel 3 99, a slider 910 and a slide 911; the driving chamber 95 is arranged in the central interior of the lower side of the machine base 1, the center of the driving chamber 95 is movably connected with the screw 2 92, a plurality of slides 911 are provided around the lower side of the driving chamber 95, and the slides 911 are all movably connected with the slider 910; the motor 2 91 is fixedly connected to the lower central side of the machine base 1, the output shaft of the motor 2 91 is fixedly connected to the center of the upper side of the screw 2 92; the screw 2 92 is arranged in the center of the connecting seat 93 The grooved holes are connected to the screw rod 2 92; there are several connecting rods 94, and the upper sides of several connecting rods 94 are movably connected to the inside around the connecting seat 93, and the lower sides of several connecting rods 94 are movably connected to the upper inner sides of the corresponding sliders 910; there are several bending grooves 96, and several bending grooves 96 are respectively located directly below the corresponding forming holes 2 and are arranged inside the lower side of the machine base 1, and the upper sides of several bending grooves 96 are respectively movably connected with bending groove wheels 1 97 and bending groove wheels 2 98; there are several bending groove wheels 3 99, and several sliders 910 are respectively located directly below the corresponding bending groove wheels 1 97, and the outsides of several sliders 910 are respectively movably connected to the inside of the outer sides of the corresponding sliders 910.

[0031] Among them, the motor 2 91 is a servo motor or a stepper motor, so that it is convenient to control the motor 2 91 through existing automation technology; the external bending grooves of the bending groove wheel 1 97, the bending groove wheel 2 98 and the bending groove wheel 3 99 are all semicircular; the lower side of the molding core rod 3 is conical; the bottom surface of the injection cavity 7 is conical.

[0032] The use status of the present invention is as follows: the present invention has a reasonable and simple structure, low production cost and convenient installation. When in use, the heated and melted plastic is first transported to the injection cavity 7 through the injection hole seat 6, and then the plastic is respectively injected into the corresponding injection grooves 11 through the injection holes 10, and then the plastic is extruded and formed between the molding hole 2 and the molding core rod 3. The cooling mechanism 8 provided here can cool and shape all the air guide tubes after extrusion molding, thereby improving the molding efficiency of all the air guide tubes, and also improving the production efficiency. When cooling specifically, the coolant first enters the annular cavity 81 through the input connector 85, and then the coolant enters all the cooling cavities 83 through all the connecting holes 82 for cooling. The spiral blades 84 provided here can ensure that the coolant moves downward in a spiral manner in the cooling cavity 83 along the spiral blades 84, so as to The uniformity of cooling is improved, and the quality of the air guide tube after cooling and shaping is also improved. After the air guide tube is extruded and formed to a certain length, the starting motor 2 91 drives the screw 2 92 to rotate, and the rotation of the screw 2 92 causes the connecting seat 93 to move downward, and the downward movement of the connecting seat 93 causes all the sliders 910 to extend through the connecting rod 94. The extension of all the sliders 910 can bend the air guide tube with residual heat through the bending groove wheel 3 99, thereby avoiding the low efficiency caused by subsequent heating and bending. In addition, since the air guide tube is formed by bending, the smooth inner wall of the air guide tube is not affected, which reduces the noise generated during use and improves the service life. The ejection mechanism 4 can directly push out the formed air guide tube by moving the ejection sleeve 41 downward, thereby improving the efficiency of demolding the air guide tube after forming.

[0033] The control method in the present invention is to start manually or control through existing automation technology. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and wiring layout in detail.

[0034] In the description of the invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0035] In the invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation", "screw-on" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the invention according to the specific circumstances.

[0036] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the invention. Without departing from the spirit and scope of the invention, the invention may have various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. A plastic airway forming device, characterized in that: It comprises a machine base (1), a molding hole (2), a molding core rod (3), an ejection mechanism (4), a fixing cover (5), an injection hole base (6), an injection cavity (7), a cooling mechanism (8), a bending mechanism (9), an injection hole (10) and an injection groove (11); There are a plurality of the molding holes (2), which are arranged in a circular shape and are opened inside the machine base (1) on all sides, and injection grooves (11) are opened around the centers of the plurality of the molding holes (2); The fixed cover (5) is fixedly connected to the upper opening of the machine base (1), and a plurality of forming mandrels (3) are fixedly connected to the lower side of the fixed cover (5), and the lower sides of the forming mandrels (3) are respectively located at the center of the corresponding forming holes (2); The ejection mechanism (4) is arranged inside the upper side of the machine base (1), and the four sides of the lower side of the ejection mechanism (4) are respectively connected to the upper sides of the corresponding forming holes (2); The injection cavity (7) is arranged in the center of the machine base (1), and a plurality of injection holes (10) are arranged around the injection cavity (7), and the outer outlets of the injection holes (10) are respectively connected to the inside of the corresponding injection grooves (11); The upper outer portion of the injection hole seat (6) is fixedly connected to the central inner portion of the fixed cover (5), and the lower opening of the injection hole seat (6) is connected to the upper central portion of the injection cavity (7); The bending mechanism (9) is arranged inside the lower side of the machine base (1), and the four sides of the bending mechanism (9) are respectively arranged on the lower side of the corresponding forming hole (2); The specific structure of the ejection mechanism (4) includes an ejection sleeve (41), a screw rod (42), an ejection seat (43), a sliding hole (44), a top cover (45), a motor (46), a transmission gear (47) and a connecting gear (48); The ejection seat (43) is movably connected to the interior of the upper side of the machine base (1); a plurality of sliding holes (44) are provided around the ejection seat (43); and the interiors of the sliding holes (44) are movably connected to the exteriors of corresponding forming core rods (3); There are a plurality of ejection sleeves (41), the interiors of the plurality of ejection sleeves (41) are movably connected to the exteriors of the corresponding forming core rods (3), and the tops of the plurality of ejection sleeves (41) are fixedly connected to the bottoms of the ejection seats (43); The top cover (45) is fixedly connected to the upper opening of the fixed cover (5); The connecting gear (48) is movably connected to the interior of the upper side of the fixed cover (5); There are a plurality of screw rods (42), the upper outer portions of the plurality of screw rods (42) are movably connected to the inner portions around the fixed cover (5), the upper outer portions of the plurality of screw rods (42) are fixedly connected to transmission gears (47), and the transmission gears (47) are connected to the connecting gears (48), and the lower outer threads of the plurality of screw rods (42) are connected to threaded holes arranged around the ejection seat (43); The motor 1 (46) is fixedly connected to the top of the fixed cover (5), and the output shaft at the bottom of the motor 1 (46) is fixedly connected to the center of the top of one of the screw rods 1 (42); The specific structure of the bending mechanism (9) includes a second motor (91), a second screw (92), a connecting seat (93), a connecting rod (94), a driving chamber (95), a bending groove (96), a first bending groove wheel (97), a second bending groove wheel (98), a third bending groove wheel (99), a slider (910) and a slide groove (911); The driving chamber (95) is arranged in the central part of the lower side of the machine base (1), and the central part of the driving chamber (95) is movably connected to the second screw rod (92). A plurality of slide grooves (911) are arranged around the lower side of the driving chamber (95), and the slide grooves (911) are movably connected to the inside of each slide groove (910); The second motor (91) is fixedly connected to the lower center of the base (1), and the output shaft at the lower side of the second motor (91) is fixedly connected to the upper center of the second screw (92); The threaded hole arranged in the center of the connecting seat (93) is connected to the second screw rod (92); There are a plurality of connecting rods (94), the upper sides of the plurality of connecting rods (94) are movably connected to the interior of the connecting seat (93) and the lower sides of the plurality of connecting rods (94) are movably connected to the inner upper sides of the corresponding sliders (910); There are a plurality of bending grooves (96), each of which is located directly below the corresponding forming hole (2) and is arranged inside the lower side of the machine base (1), and a bending groove wheel 1 (97) and a bending groove wheel 2 (98) are movably connected to both sides of the upper side of each of the bending grooves (96); There are a plurality of the bending groove wheels (99), and the plurality of sliders (910) are respectively located directly below the corresponding bending groove wheels (97), and the exteriors of the plurality of sliders (910) are respectively movably connected to the interiors of the exteriors of the corresponding sliders (910); The specific structure of the cooling mechanism (8) includes an annular cavity 1 (81), a connecting hole 1 (82), a cooling cavity (83), a spiral blade (84), an input connector (85), an annular cavity 2 (86), a connecting hole 2 (87) and an output connector (88); The annular cavity one (81) is arranged inside the central periphery of the machine base (1), and an input connector (85) is arranged at the right opening of the annular cavity one (81); The annular cavity 2 (86) is located at the lower side of the annular cavity 1 (81), the annular cavity 2 (86) is arranged inside the central periphery of the machine base (1), and an output connector (88) is arranged at the left opening of the annular cavity 2 (86); There are a plurality of cooling cavities (83), each of which is located around the lower side of the corresponding forming hole (2) and is arranged inside the machine base (1). A spiral blade (84) is fixedly connected inside each of the cooling cavities (83). The upper sides of each of the cooling cavities (83) are connected to the upper side of the inner side of the annular cavity one (81) through the connecting hole one (82), and the lower sides of each of the cooling cavities (83) are connected to the lower side of the inner side of the annular cavity two (86) through the connecting hole two (87).

2. The plastic air guide tube forming device according to claim 1, characterized in that: The motor 1 (46) is a servo motor or a stepper motor.

3. The plastic air guide tube forming device according to claim 1, characterized in that: The second motor (91) is a servo motor or a stepper motor.

4. The plastic air guide tube forming device according to claim 1, characterized in that: The external bending grooves of the bending groove wheel one (97), the bending groove wheel two (98) and the bending groove wheel three (99) are all semicircular.

5. The plastic air guide tube forming device according to claim 1, characterized in that: The lower side of the forming mandrel (3) is in a conical shape.

6. The plastic air guide tube forming device according to claim 1, characterized in that: The bottom surface of the injection cavity (7) is in a conical shape.

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