Pressure injection molding machine for anti-corrosion pipe fitting

Abstract

The utility model discloses a pressure injection molding machine for an anti-corrosion pipe fitting, and relates to the technical field of anti-corrosion pipe fittings. The device comprises a forming machine, a feeding port is formed in the top of the forming machine, a pipe outlet is formed in the side face of the forming machine, a cutting device is arranged on the side face of the forming machine, a conveying frame is arranged on the side face of the forming machine, and a conveying belt is in transmission connection with the circumferential face of the conveying frame. A spraying device is arranged on the side face of the conveying frame. By means of mutual cooperation of the motor, the fixing frame, the support, the threaded rod, the connecting frame, the limiting block, the coating box, the collision block, the rotating shaft, the limiting plate and the like in the spraying device, when the motor is started, the rotating shaft fixes a pipe fitting, and through movement of a threaded sleeve, the pipe fitting can be fixed through the limiting plate. And the spraying opening sprays the pipe fitting, the spraying effect is achieved, meanwhile, the pipe fitting is prevented from shaking, and the existing problems are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-corrosion pipe fittings, and particularly relates to a pressure casting machine for anti-corrosion pipe fittings. Background Technique

[0002] The pressure casting machine for anti-corrosion pipe fittings is usually used to manufacture pipe fittings with anti-corrosion functions. These pipe fittings can be used in fields such as chemical industry, petroleum, and natural gas to ensure the long-term operation and safety of the pipeline system. The main function of the pressure casting machine is to inject anti-corrosion materials such as polypropylene, polyethylene, and epoxy resin into the pipe fitting mold. After high-temperature and high-pressure treatment, the anti-corrosion material is firmly bonded to the pipe fitting substrate to form a protective film or lining.

[0003] According to a disclosed pipe fitting spraying device (publication number: CN 214021497U), the pipe fitting spraying device includes a base. A movable bracket is provided on the upper surface of the base. A sliding sleeve is fixedly provided at one end of the bracket away from the base. The sliding sleeve is movably sleeved on the outer wall of the pipe body. A fixing ring is sleeved on the pipe body. The fixing ring is fixedly connected to the sliding sleeve through a connecting rod. A plurality of spraying pipes are fixed on the fixing ring. A spraying head is provided at one end of the spraying pipe close to the pipe body. The other end of the spraying pipe away from the pipe body is communicated with an annular feeding pipe. The pipe fitting spraying device provided by the utility model solves the problems of uneven spraying on the pipe body surface, which not only increases the labor cost but also wastes paint and causes economic losses.

[0004] Through the mutual cooperation of the spraying head and the pipe body assembly in the above application, it is difficult for the spraying head to evenly spray the material on the pipe body during operation, and it is necessary for the staff to perform secondary spraying on the pipe body, which is time-consuming and laborious. Therefore, we propose a pressure casting machine for anti-corrosion pipe fittings. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pressure casting machine for anti-corrosion pipe fittings. Through the mutual cooperation among components such as the motor, fixing frame, support, threaded rod, connecting frame, limiting block, paint tank, collision block, rotating shaft, and limiting plate inside the spraying device of the utility model, when the motor is started, the rotating shaft fixes the pipe fitting, and through the movement of the threaded sleeve, the spraying port sprays the pipe fitting, achieving the spraying effect while preventing the pipe fitting from shaking and solving the existing problems.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model relates to an injection molding machine for anti-corrosion pipe fittings, including a molding machine. A feeding port is opened at the top of the molding machine, an outlet pipe port is opened at the side of the molding machine, a cutting device is arranged at the side of the molding machine, a conveying rack is arranged at the side of the molding machine, a conveyor belt is in driving connection on the circumferential surface of the conveying rack, and a spraying device is arranged at the side of the conveying rack;

[0008] The spraying device includes a motor. The motor is arranged on the right side of the conveying rack. A fixing rack is arranged on the right side of the conveying rack. A support is arranged on the right side of the fixing rack. The motor is fixedly connected to the side of the support. A threaded rod is fixedly connected to the output shaft of the motor. A threaded sleeve is in threaded connection on the circumferential surface of the threaded rod. A connecting frame is fixedly connected to the side of the threaded sleeve. A spraying frame is fixedly connected to the bottom of the connecting frame. A spraying port is opened on the circumferential surface of the spraying frame. A connecting pipe is fixedly connected inside the spraying port. A limiting block is arranged behind the fixing rack. A paint box is fixedly connected to the top of the limiting block. A feeding port is opened at the top of the paint box. A discharging port is opened at the side of the paint box. The circumferential surface of the connecting pipe is inside the discharging port.

[0009] Furthermore, a first baffle shaft is rotatably connected inside the paint box. A first baffle is fixedly connected to the circumferential surface of the first baffle shaft. A spring hole is opened on the inner wall of the paint box. A first spring is fixedly connected to the inner wall of the spring hole. One end of the first spring away from the spring hole is fixedly connected to the side of the first baffle. Such a design is beneficial to limit the first baffle through the first spring.

[0010] Furthermore, a rotating shaft opening is opened on the side of the paint box. A rotating shaft is rotatably connected inside the rotating shaft opening. A collision plate is fixedly connected to the circumferential surface of the rotating shaft. A collision block is fixedly connected to the circumferential surface of the threaded rod. A rotating shaft opening is opened on the inner wall of the fixing rack. A rotating shaft is rotatably connected inside the rotating shaft opening. A limiting plate is fixedly connected to the circumferential surface of the rotating shaft. A limiting groove is opened on the inner wall of the fixing rack. A limiting rod is fixedly connected inside the limiting groove. Such a design is beneficial to limit the pipe through the limiting rod by the limiting plate.

[0011] Furthermore, a limiting shaft opening is opened on the side of the limiting block. A limiting shaft is rotatably connected inside the limiting shaft opening. A second spring is fixedly connected to the inner wall of the limiting shaft opening. One end of the second spring away from the limiting shaft opening is fixedly connected to the side of the limiting shaft. A second baffle shaft is rotatably connected inside the limiting block. A second baffle is fixedly connected to the circumferential surface of the second baffle shaft. A knocking block is fixedly connected to the circumferential surface of the threaded rod. Such a design is beneficial to limit the limiting shaft through the second baffle.

[0012] Furthermore, the side surface of the first baffle is elastically connected to the inner wall of the spring hole through a first spring, the side surface of the limiting shaft is elastically connected to the inner wall of the limiting shaft opening through a second spring, the collision plate is located on the displacement trajectory of the collision block, the first baffle is located on the displacement trajectory of the second baffle, and the second baffle is located on the displacement trajectory of the knocking block. The number of the limiting block, the limiting shaft, the second baffle and the knocking block is set to two groups, and they are symmetrical with each other along the vertical center axis of the fixed frame. This design is conducive to the knocking block to knock the second baffle, and the second baffle collides with the first baffle.

[0013] Furthermore, an air-drying device is provided inside the spraying device, and the air-drying device includes a driven plate, the driven plate is fixedly connected to the top of the support, the top of the limiting block is fixedly connected to the bracket, the internal rotation of the bracket is connected to a driving shaft, a first belt groove is opened on the circumferential surface of the threaded rod, a second belt groove is opened on the circumferential surface of the driving shaft, a belt is transmission-connected on the circumferential surface of the first belt groove, the inner side surface of the belt is on the circumferential surface of the second belt groove, the internal rotation of the driven plate is connected to the driven shaft, a driving bevel gear is fixedly passed through the circumferential surface of the driving shaft, a driven bevel gear is fixedly passed through the circumferential surface of the driven shaft, the circumferential surface of the driving bevel gear is meshed with the circumferential surface of the driven bevel gear, and blades are fixedly connected to the circumferential surface of the driven shaft. Such a design is conducive to air-drying the paint-finished tube with the blades through the rotation of the driven shaft.

[0014] Furthermore, the top of the conveying frame is fixedly connected to a limiting frame, the side of the limiting frame is transmission-connected to a third baffle shaft, and the circumferential surface of the third baffle shaft is fixedly connected to a third baffle. This design is conducive to preventing the pipe from colliding with the blade through the third baffle.

[0015] Furthermore, a heating lamp slot is provided on the side of the limiting plate, a heating lamp is arranged inside the heating lamp slot, and a waste box is provided at the bottom of the limiting plate. This design is conducive to drying the bottom of the tube by the heating lamp.

[0016] Furthermore, the number of the blades is set to six and arranged along a circumferential array on the circumferential surface of the driven shaft, and the number of the heating lamps is set to several and arranged along a linear array on the side of the limiting plate. This design is conducive to better air-drying effect through multiple blades.

[0017] Furthermore, the blade is located below the driven bevel gear, and the blade is located above the limit plate. Such a design is conducive to allowing the blade to air-dry the tube on the limit plate through the rotation of the driven shaft.

[0018] The utility model has the following beneficial effects:

[0019] The utility model realizes the fixation of the pipe fitting by the rotating shaft when the motor is started through the mutual cooperation among components such as the motor, fixed frame, support, threaded rod, connecting frame, limiting block, paint box, collision block, rotating shaft and limiting plate inside the spraying device. Through the movement of the threaded sleeve, the spraying port sprays the pipe fitting, achieving the spraying effect while preventing the pipe fitting from shaking.

[0020] The utility model realizes the air drying of the pipe fitting by the blades when the motor is started through the mutual cooperation among components such as the support, driving shaft, belt, driven shaft, driving bevel gear, driven bevel gear, blades, limiting frame, third baffle and heating lamp inside the air drying device. When the motor is started, the driving shaft is driven by the belt, and the driving shaft meshes with the driven bevel gear to make the driven shaft rotate, enabling the blades to air dry the pipe fitting, achieving the air drying effect.

[0021] Of course, it is not necessary for any product implementing the utility model to simultaneously achieve all the above-mentioned advantages. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a three-dimensional external structure schematic diagram of the utility model;

[0024] Figure 2 It is a three-dimensional sectional structure schematic diagram of the utility model;

[0025] Figure 3 It is a three-dimensional sectional structure schematic diagram of the longitudinal section of the utility model;

[0026] Figure 4 It is a three-dimensional overall structure schematic diagram of the spraying device of the utility model;

[0027] Figure 5 It is of the utility model Figure 2 Three-dimensional enlarged structure schematic diagram of A therein;

[0028] Figure 6 It is of the utility model Figure 3 Three-dimensional enlarged structure schematic diagram of B therein;

[0029] Figure 7 It is of the utility model Figure 4 Three-dimensional enlarged structure schematic diagram of C therein.

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] 1. Molding machine; 2. Feeding port; 3. Outlet pipe opening; 4. Cutting device; 5. Conveyor frame; 6. Conveyor belt; 7. Spraying device; 71. Motor; 72. Fixed frame; 73. Support; 74. Threaded rod; 75. Threaded sleeve; 76. Connecting frame; 77. Spraying frame; 78. Spraying port; 79. Connecting pipe; 710. Limiting block; 711. Paint tank; 712. Feed inlet; 713. Discharge outlet; 714. First baffle shaft; 715. First baffle; 716. Spring hole; 717. First spring; 718. Rotating shaft opening; 719. Rotating shaft; 720. Collision plate; 721. Collision block; 722. Rotating shaft opening; 723. Rotating shaft; 724. Limiting plate; 725. Limiting groove; 726. Limiting rod; 727. Limiting shaft opening; 728. Limiting shaft; 729. Second spring; 730. Second baffle shaft; 731. Second baffle; 732. Knocking block; 8. Air drying device; 81. Driven plate; 82. Support; 83. Driving shaft; 84. First belt groove; 85. Second belt groove; 86. Belt; 87. Driven shaft; 88. Driving bevel gear; 89. Driven bevel gear; 810. Blade; 811. Limiting frame; 812. Third baffle shaft; 813. Third baffle; 814. Heating lamp groove; 815. Heating lamp; 816. Waste bin. Detailed implementation mode

[0032] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] As Figures 1 to 7 shown, this embodiment proposes a pressure injection molding machine for anti-corrosion pipe fittings, including a molding machine 1. A feeding port 2 is opened at the top of the molding machine 1, an outlet pipe opening 3 is opened on the side of the molding machine 1, a cutting device 4 is arranged on the side of the molding machine 1, a conveyor frame 5 is arranged on the side of the molding machine 1, a conveyor belt 6 is drivingly connected to the circumferential surface of the conveyor frame 5, and a spraying device 7 is arranged on the side of the conveyor frame 5;

[0035] The spraying device 7 includes a motor 71. The motor 71 is arranged to the right of the conveyor frame 5. There is a fixed frame 72 to the right of the conveyor frame 5. There is a support 73 to the right of the fixed frame 72. The motor 71 is fixedly connected to the side of the support 73. A threaded rod 74 is fixedly connected to the output shaft of the motor 71. A threaded sleeve 75 is threadedly connected to the circumferential surface of the threaded rod 74. A connecting frame 76 is fixedly connected to the side of the threaded sleeve 75. A spraying frame 77 is fixedly connected to the bottom of the connecting frame 76. Spray openings 78 are formed on the circumferential surface of the spraying frame 77. A connecting pipe 79 is fixedly connected to the inside of the spray openings 78. A limiting block 710 is arranged behind the fixed frame 72. A paint tank 711 is fixedly connected to the top of the limiting block 710. A feed opening 712 is formed on the top of the paint tank 711. A discharge opening 713 is formed on the side of the paint tank 711. The circumferential surface of the connecting pipe 79 is inside the discharge opening 713.

[0036] A first baffle shaft 714 is rotatably connected to the inside of the paint tank 711. A first baffle 715 is fixedly connected to the circumferential surface of the first baffle shaft 714. Spring holes 716 are formed on the inner wall of the paint tank 711. A first spring 717 is fixedly connected to the inner wall of the spring holes 716. One end of the first spring 717 away from the spring holes 716 is fixedly connected to the side of the first baffle 715. Such a design is beneficial to limit the first baffle 715 through the first spring 717.

[0037] A rotating shaft opening 718 is formed on the side of the paint tank 711. A rotating shaft 719 is rotatably connected to the inside of the rotating shaft opening 718. A collision plate 720 is fixedly connected to the circumferential surface of the rotating shaft 719. A collision block 721 is fixedly connected to the circumferential surface of the threaded rod 74. A rotating shaft opening 722 is formed on the inner wall of the fixed frame 72. A rotating shaft 723 is rotatably connected to the inside of the rotating shaft opening 722. A limiting plate 724 is fixedly connected to the circumferential surface of the rotating shaft 723. A limiting groove 725 is formed on the inner wall of the fixed frame 72. A limiting rod 726 is fixedly connected to the inside of the limiting groove 725. Such a design is beneficial to limit the pipe through the limiting rod 726 by the limiting plate 724.

[0038] A limiting shaft opening 727 is formed on the side of the limiting block 710. A limiting shaft 728 is rotatably connected to the inside of the limiting shaft opening 727. A second spring 729 is fixedly connected to the inner wall of the limiting shaft opening 727. One end of the second spring 729 away from the limiting shaft opening 727 is fixedly connected to the side of the limiting shaft 728. A second baffle shaft 730 is rotatably connected to the inside of the limiting block 710. A second baffle 731 is fixedly connected to the circumferential surface of the second baffle shaft 730. A knocking block 732 is fixedly connected to the circumferential surface of the threaded rod 74. Such a design is beneficial to limit the limiting shaft 728 through the second baffle 731.

[0039] The side of the first baffle 715 is elastically connected to the inner wall of the spring hole 716 through the first spring 717. The side of the limiting shaft 728 is elastically connected to the inner wall of the limiting shaft opening 727 through the second spring 729. The collision plate 720 is located on the displacement track of the collision block 721. The first baffle 715 is located on the displacement track of the second baffle 731. The second baffle 731 is located on the displacement track of the knocking block 732. The number of the limiting blocks 710, the limiting shafts 728, the second baffles 731 and the knocking blocks 732 is set to two groups and they are symmetric with respect to the vertical central axis of the fixing frame 72. Such a design is beneficial for the knocking block 732 to knock the second baffle 731, and the second baffle 731 collides with the first baffle 715.

[0040] In this embodiment, after the pipe fitting is processed, in order to prevent the pipe fitting from corrosion and reduce the frictional resistance, it is necessary to spray the outside of the pipe fitting. First, let the pipe fitting enter onto the limiting plate 724 through the conveyor belt 6, and then start the motor 71. When the motor 71 is started, the threaded rod 74 rotates clockwise. When the threaded rod 74 rotates clockwise, the knocking block 732 on the threaded rod 74 knocks the second baffle 731. When the second baffle 731 is knocked, the second baffle shaft 730 rotates. When the second baffle shaft 730 rotates, the limiting shaft 728 in the limiting shaft opening 727 fixes the pipe fitting. When the threaded rod 74 rotates clockwise, the threaded sleeve 75 moves forward horizontally. When the threaded rod 74 rotates clockwise, the first baffle 715 in the paint tank 711 opens the material outlet 713. When the material outlet 713 is opened, the paint will spray the pipe fitting through the connecting pipe 79 and the spraying port 78. When the threaded sleeve 75 moves forward horizontally, the spraying frame 77 connected through the connecting frame 76 moves forward horizontally. When the spraying frame 77 moves forward horizontally, the spraying port 78 can spray the pipe fitting evenly. After the spraying is completed, the threaded rod 74 rotates counterclockwise. When the threaded rod 74 rotates counterclockwise, the threaded sleeve 75 moves backward horizontally. When the threaded rod 74 rotates counterclockwise, the first baffle 715 in the paint tank 711 closes the material outlet 713. When the material outlet 713 is closed, the paint will not spray the pipe fitting through the connecting pipe 79 and the spraying port 78. When the threaded sleeve 75 moves backward horizontally, the spraying frame 77 connected through the connecting frame 76 moves backward horizontally.

[0041] Embodiment 2

[0042] As Figures 1 to 4As shown in the figure, based on the same concept as in the above-mentioned Embodiment 1, this embodiment also proposes that a drying device 8 is provided inside the spraying device 7. The drying device 8 includes a driven plate 81. The driven plate 81 is fixedly connected to the top of the support 73. A bracket 82 is fixedly connected to the top of the limiting block 710. A driving shaft 83 is rotatably connected inside the bracket 82. A first belt groove 84 is formed on the circumferential surface of the threaded rod 74, and a second belt groove 85 is formed on the circumferential surface of the driving shaft 83. A belt 86 is drivingly connected to the circumferential surface of the first belt groove 84. The inner side of the belt 86 is on the circumferential surface of the second belt groove 85. A driven shaft 87 is rotatably connected inside the driven plate 81. A driving bevel gear 88 is fixedly penetrated through the circumferential surface of the driving shaft 83, and a driven bevel gear 89 is fixedly penetrated through the circumferential surface of the driven shaft 87. The circumferential surface of the driving bevel gear 88 meshes with the circumferential surface of the driven bevel gear 89. A blade 810 is fixedly connected to the circumferential surface of the driven shaft 87. Such a design is beneficial to drying the pipe coated with paint by the rotation of the driven shaft 87, which drives the blade 810.

[0043] A limiting frame 811 is fixedly connected to the top of the conveyor rack 5. A third baffle shaft 812 is drivingly connected to the side of the limiting frame 811. A third baffle 813 is fixedly connected to the circumferential surface of the third baffle shaft 812. Such a design is beneficial to preventing the pipe from colliding with the blade 810 by the third baffle 813.

[0044] A heating lamp groove 814 is formed on the side of the limiting plate 724. A heating lamp 815 is arranged inside the heating lamp groove 814. A waste box 816 is arranged at the bottom of the limiting plate 724. Such a design is beneficial to drying the bottom of the pipe by the heating lamp 815.

[0045] The number of the blades 810 is set to six, and they are arranged in a circumferential array on the circumferential surface of the driven shaft 87. The number of the heating lamps 815 is set to several, and they are arranged in a linear array on the side of the limiting plate 724. Such a design is beneficial to achieving a better drying effect by multiple blades 810.

[0046] The blade 810 is located below the driven bevel gear 89 and above the limiting plate 724. Such a design is beneficial to drying the pipe on the limiting plate 724 by the rotation of the driven shaft 87, which drives the blade 810.

[0047] In this embodiment, after the pipe fittings are sprayed, they need to be air-dried to prevent failure to achieve the ideal effect. First, when the threaded rod 74 rotates counterclockwise, the driving shaft 83 on the bracket 72 rotates counterclockwise through the transmission of the belt 86. When the driving shaft 83 rotates counterclockwise, through the engagement of the driving bevel gear 88 and the driven bevel gear 89, the driven shaft 87 rotates clockwise. When the driven shaft 87 rotates clockwise, the blades 810 air-dry the pipe fittings. When the threaded rod 74 rotates clockwise, the driving shaft 83 on the bracket 72 rotates clockwise through the transmission of the belt 86. When the driving shaft 83 rotates clockwise, through the engagement of the driving bevel gear 88 and the driven bevel gear 89, the driven shaft 87 rotates counterclockwise. When the driven shaft 87 rotates counterclockwise, the blades 810 do not air-dry the pipe fittings.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An injection molding machine for anti-corrosion pipe fittings, comprising a molding machine (1), characterized in that: The top of the molding machine (1) is provided with a feeding port (2), the side of the molding machine (1) is provided with a pipe outlet (3), the side of the molding machine (1) is provided with a cutting device (4), the side of the molding machine (1) is provided with a conveying frame (5), the circumferential surface of the conveying frame (5) is connected to a conveyor belt (6), and the side of the conveying frame (5) is provided with a spraying device (7); The spraying device (7) comprises a motor (71), the motor (71) being arranged on the right side of a conveying frame (5), a fixing frame (72) being arranged on the right side of the conveying frame (5), a support (73) being arranged on the right side of the fixing frame (72), the motor (71) being fixedly connected to a side surface of the support (73), a threaded rod (74) being fixedly connected to an output shaft of the motor (71), a threaded sleeve (75) being threadedly connected to a circumferential surface of the threaded rod (74), a connecting frame (76) being fixedly connected to a side surface of the threaded sleeve (75), and the connecting frame (76) A spray frame (77) is fixedly connected to the bottom of the fixed frame (72), a spray port (78) is provided on the circumferential surface of the spray frame (77), a connecting pipe (79) is fixedly connected inside the spray port (78), a limiting block (710) is provided at the rear of the fixed frame (72), a paint box (711) is fixedly connected to the top of the limiting block (710), a feed port (712) is provided on the top of the paint box (711), a discharge port (713) is provided on the side of the paint box (711), and the circumferential surface of the connecting pipe (79) is inside the discharge port (713).

2. The injection molding machine for anti-corrosion pipe fittings according to claim 1, characterized in that: The paint box (711) is rotatably connected to a first baffle shaft (714) inside, a first baffle (715) is fixedly connected to the circumferential surface of the first baffle shaft (714), a spring hole (716) is opened on the inner wall of the paint box (711), a first spring (717) is fixedly connected to the inner wall of the spring hole (716), and one end of the first spring (717) away from the spring hole (716) is fixedly connected to the side of the first baffle (715).

3. The injection molding machine for anti-corrosion pipe fittings according to claim 2, characterized in that: The paint box (711) is provided with a rotating shaft opening (718) on the side thereof, a rotating shaft (719) is rotatably connected inside the rotating shaft opening (718), a collision plate (720) is fixedly connected to the circumferential surface of the rotating shaft (719), a collision block (721) is fixedly connected to the circumferential surface of the threaded rod (74), a rotating shaft opening (722) is provided on the inner wall of the fixing frame (72), a rotating shaft (723) is rotatably connected inside the rotating shaft opening (722), a limiting plate (724) is fixedly connected to the circumferential surface of the rotating shaft (723), a limiting groove (725) is provided on the inner wall of the fixing frame (72), and a limiting rod (726) is fixedly connected inside the limiting groove (725).

4. The injection molding machine for anti-corrosion pipe fittings according to claim 3, characterized in that: A limiting shaft opening (727) is provided on the side of the limiting block (710), and a limiting shaft (728) is rotatably connected inside the limiting shaft opening (727), and a second spring (729) is fixedly connected to the inner wall of the limiting shaft opening (727), and one end of the second spring (729) away from the limiting shaft opening (727) is fixedly connected to the side of the limiting shaft (728), and a second baffle shaft (730) is rotatably connected inside the limiting block (710), and a second baffle (731) is fixedly connected to the circumferential surface of the second baffle shaft (730), and a knocking block (732) is fixedly connected to the circumferential surface of the threaded rod (74).

5. The injection molding machine for anti-corrosion pipe fittings according to claim 4, characterized in that: The side surface of the first baffle (715) is elastically connected to the inner wall of the spring hole (716) via a first spring (717); the side surface of the limiting shaft (728) is elastically connected to the inner wall of the limiting shaft opening (727) via a second spring (729); the collision plate (720) is located on the displacement track of the collision block (721); the first baffle (715) is located on the displacement track of the second baffle (731); the second baffle (731) is located on the displacement track of the knocking block (732); the limiting block (710), the limiting shaft (728), the second baffle (731) and the knocking block (732) are arranged in two groups, and are symmetrical to each other along the vertical center axis of the fixing frame (72).

6. The injection molding machine for anti-corrosion pipe fittings according to claim 5, characterized in that: The spraying device (7) is provided with an air drying device (8) inside, and the air drying device (8) includes a driven plate (81), the driven plate (81) is fixedly connected to the top of the support (73), the top of the limiting block (710) is fixedly connected to a bracket (82), the inside of the bracket (82) is rotatably connected to a driving shaft (83), a first belt groove (84) is provided on the circumferential surface of the threaded rod (74), a second belt groove (85) is provided on the circumferential surface of the driving shaft (83), and the circumferential surface of the first belt groove (84) is The upper transmission is connected with a belt (86), the inner side surface of the belt (86) is on the circumferential surface of the second belt groove (85), the inner part of the driven plate (81) is rotatably connected with a driven shaft (87), a driving bevel gear (88) is fixedly passed through the circumferential surface of the driving shaft (83), a driven bevel gear (89) is fixedly passed through the circumferential surface of the driven shaft (87), the circumferential surface of the driving bevel gear (88) is meshed with the circumferential surface of the driven bevel gear (89), and a blade (810) is fixedly connected to the circumferential surface of the driven shaft (87).

7. The injection molding machine for anti-corrosion pipe fittings according to claim 6, characterized in that: The top of the conveying frame (5) is fixedly connected to a limiting frame (811), the side of the limiting frame (811) is drivingly connected to a third baffle shaft (812), and the circumferential surface of the third baffle shaft (812) is fixedly connected to a third baffle (813).

8. The injection molding machine for anti-corrosion pipe fittings according to claim 7, characterized in that: A heating lamp slot (814) is provided on the side of the limiting plate (724), a heating lamp (815) is arranged inside the heating lamp slot (814), and a waste box (816) is arranged at the bottom of the limiting plate (724).

9. The injection molding machine for anti-corrosion pipe fittings according to claim 8, characterized in that: The number of the blades (810) is set to six and arranged along a circumferential array on the circumferential surface of the driven shaft (87); the number of the heating lamps (815) is set to a plurality and arranged along a linear array on the side of the limiting plate (724).

10. The injection molding machine for anti-corrosion pipe fittings according to claim 9, characterized in that: The blade (810) is located below the driven bevel gear (89), and the blade (810) is located above the limiting plate (724).

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