Quick mold changing equipment and system of three-color injection molding machine

Abstract

The invention relates to the technical field of injection mold changing, and discloses rapid mold changing equipment and system of a three-color injection molding machine, the equipment comprises a mold changing plate, an electric sliding rail is fixedly connected to the upper surface of the mold changing plate, an electric sliding block is arranged on the outer wall of the electric sliding rail, and the outer wall of the electric sliding block is slidably connected to the inner wall of the mold changing plate; an air cylinder is fixedly connected to the upper surface of the electric sliding block, a pressing plate is fixedly connected to the lower surface of the connecting arm, a base is slidably connected to the inner wall of the mold changing plate, a fixed mold is slidably connected to the outer wall of the movable mold, and a steering adjusting assembly is arranged on the outer wall of the mold changing plate. The connecting rod and the rotating shaft ascend to drive the pressing plate to press the base to fix the base through the connecting arm, the movable mold is rapidly installed, the installation principle of the fixed mold is the same as that of the movable mold, the size of a needed hydraulic clamp can be selected to be matched according to the size of a mold base and equipment, pneumatic multi-loop control is achieved, safe and multiple operation modes are provided, and gas-phase-to-oil-pressure driving is achieved. Energy is saved, and safety and stability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding mold changing, in particular to rapid mold changing equipment and a system for a three-color injection molding machine. Background Art

[0002] With the rapid development of the plastics industry, the application of injection molding technology in the manufacturing industry is becoming more and more extensive. Three-color injection molding technology can produce plastic products with multiple colors or materials in one injection molding process, greatly improving the aesthetics and functionality of the product.

[0003] Driven by technological development, the market has put forward higher requirements for the efficiency, precision and safety of injection molding production. In order to meet these needs, the rapid mold change equipment of three-color injection molding machine came into being, aiming to achieve efficient, accurate and safe mold change, improve production efficiency, reduce production costs and enhance the market competitiveness of enterprises.

[0004] In the traditional injection molding machine mold installation process, bolt locking is used, which is time-consuming, labor-intensive, and the safety system is not guaranteed: the mold pressure plate bolts are often placed irregularly, the bolt threads are often damaged, and the mold change time is delayed due to manual adjustment of the mold position and mold adjustment trial production time; the mold dimensions are not uniform, and the mold selection and matching time is extended outside of working hours, which increases the labor intensity of workers. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a rapid mold changing device and system for a three-color injection molding machine, which solves the problems of frequent damage to the screw threads of the media bolts, delay in mold changing time due to manual adjustment of the mold position, delay in mold adjustment and trial production time; and inconsistent mold dimensions, which prolongs the mold selection and matching time outside working hours and increases the labor intensity of workers.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a rapid mold changing device for a three-color injection molding machine, comprising a mold changing plate, the upper surface of the mold changing plate is fixedly connected with an electric slide rail, the outer wall of the electric slide rail is provided with an electric slider, the outer wall of the electric slider is slidably connected to the inner wall of the mold changing plate, the upper surface of the electric slider is fixedly connected with a cylinder, the output end of the cylinder is fixedly connected with a connecting rod, the outer wall of the connecting rod is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with an adjusting rod, the outer wall of the adjusting rod is rotatably connected to a limiting plate, the lower surface of the limiting plate is fixedly connected to the upper surface of the electric slider, the outer wall of the adjusting rod is rotatably connected with a connecting arm, the inner wall of the connecting arm is rotatably connected with the limiting rod, the outer wall of the limiting rod is rotatably connected to the inner wall of the limiting plate, the lower surface of the connecting arm is fixedly connected with a pressing plate, the inner wall of the mold changing plate is slidably connected with a base, the upper surface of the base is fixedly connected with a movable mold, the outer wall of the movable mold is slidably connected with a fixed film, and the outer wall of the mold changing plate is provided with a steering adjustment component.

[0007] Preferably, the steering adjustment assembly includes a connecting column, the outer wall of the connecting column is fixedly connected to the outer wall of the template changer, the outer wall of the connecting column is rotatably connected to a slide plate, the outer wall of the slide plate is fixedly connected to a motor, the output end of the motor is fixedly connected to a first gear, the outer wall of the first gear is meshingly connected to a second gear, and the inner wall of the second gear is fixedly connected to the outer wall of the connecting column.

[0008] Preferably, the outer wall of the fixed film is slidably connected to a base, and the outer wall of the electric slider is slidably connected to the inner wall of the fixed film.

[0009] Preferably, a positioning groove is provided on the inner wall of the template changer, and the outer wall of the base is slidably connected to the inner wall of the positioning groove.

[0010] Preferably, a bellows is provided inside the electric slider, a stainless steel mesh sleeve is provided on the outer wall of the bellows, and the outer wall of the stainless steel mesh sleeve is fixedly connected to the outer wall of the electric slider.

[0011] Preferably, the outer wall of the bellows is fixedly connected to a stator, a rotating bearing is provided inside the stator, and the inner wall of the rotating bearing is fixedly connected to a rotor.

[0012] Preferably, the outer wall of the rotor is rotatably connected to the inside of the stator, and a channel is opened inside the rotor.

[0013] Preferably, a slide table is fixedly connected to the lower surface of the slide plate, a slide column is slidably connected to the inner wall of the slide table, and both ends of the slide column are fixedly connected to the outer shell.

[0014] Preferably, a hydraulic cylinder is fixedly connected to the outer wall of the housing, and an output end of the hydraulic cylinder is fixedly connected to the rear outer wall of the slide plate.

[0015] The quick mold change system of the three-color injection molding machine includes:

[0016] Fixture adaptation module, control mode module, drive energy saving module, table control module, machine joint module, hydraulic circuit module, power failure protection module and protection module;

[0017] The fixture adapter module is used to select the appropriate hydraulic fixture size according to the mold base and equipment size;

[0018] The control mode module is used to provide a safe operation mode through pneumatic multi-circuit control;

[0019] The drive energy-saving module is used for converting the gas pressure drive mode to the oil pressure drive mode;

[0020] The table control module is used for the movable table and the fixed side table to be controlled separately by two circuits;

[0021] The machine joint module is used to connect with the machine control box, and the machine will automatically shut down when the system is abnormal;

[0022] The hydraulic circuit module is used for long-term pressure holding and pressure detection functions to detect the stability and safety of the hydraulic circuit;

[0023] The power-off protection module is used for automatically clamping the mold when the power is off;

[0024] The protection module is used for stainless steel mesh protection of high-pressure oil pipes and corrugated pipe protection of air pipes and electric wires.

[0025] The present invention provides a rapid mold changing device and system for a three-color injection molding machine. It has the following beneficial effects:

[0026] 1. The present invention uses an electric slide rail and an electric slider to move backward, which is used to lift the movable mold through a gantry crane. The movable mold drives the base to be inserted into the interior of the positioning groove, and the cylinder drives the connecting rod and the rotating shaft to rise and drives the limit rod and the limit plate to limit the base through the connecting arm to drive the pressing plate to press the base to fix it. The movable mold can be installed quickly, and the installation principle of the fixed mold is the same as that of the movable mold. During use, the required hydraulic clamp size can be selected according to the mold base and the size of the equipment. It has wide applicability, pneumatic multi-circuit control, provides safety and multiple operation modes, and pneumatic phase conversion oil pressure drive saves energy and is safe and stable.

[0027] 2. The stator of the present invention rotates on the outer wall of the rotor, and the stator and the rotor can also rotate with each other. During use, the cables and pipes will not be entangled due to the rotation of the connecting column. A 304 stainless steel mesh sleeve is added to the high-pressure oil pipe to prevent high-temperature bursting during use. The air pipe and the wire are protected by a corrugated pipe to prevent injury and be safer. The hydraulic clamp adopts a special sealing ring, which is temperature-resistant and safe.

[0028] 3. The present invention uses the movable table and the fixed side table to control two circuits separately to ensure that the oil pipe will not break and cause the mold to loosen. It is connected to the machine control box. If the system is abnormal, the machine will be automatically forced to shut down. The oil pressure alarm device can ensure the safety of the mold. It is small in size, easy to install, and saves space. Each oil pressure circuit has a long-term pressure holding function for 72 hours and is not affected by power outages and air pressure loss. Each oil pressure circuit has a pressure detection function. When any circuit is lower than the safety pressure, it will immediately alarm and operate the mold loosening switch for two protections. In addition, this system has a power-off automatic mold clamping function. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional diagram of a rapid mold changing device for a three-color injection molding machine of the present invention;

[0030] Figure 2It is a schematic diagram of a mold plate changing device of a three-color injection molding machine of the present invention;

[0031] Figure 3 It is a schematic diagram of an electric slider of a quick mold changing device of a three-color injection molding machine of the present invention;

[0032] Figure 4 It is a schematic diagram of the upper side of the slide plate of the rapid mold changing device of the three-color injection molding machine of the present invention;

[0033] Figure 5 It is a schematic diagram of a bellows of a rapid mold change device of a three-color injection molding machine of the present invention;

[0034] Figure 6 The figure is a diagram of the rapid mold change system of the three-color injection molding machine of the present invention.

[0035] Among them, 1. template changer; 2. electric slide rail; 3. electric slider; 4. cylinder; 5. connecting rod; 6. limit plate; 7. rotating shaft; 8. adjusting rod; 9. connecting arm; 10. limit rod; 11. pressure plate; 12. base; 13. movable mold; 14. positioning groove; 15. connecting column; 16. slide plate; 17. motor; 18. first gear; 19. second gear; 20. fixed film; 21. stainless steel mesh sleeve; 22. bellows; 23. stator; 24. rotor; 25. channel; 26. slide; 27. slide column; 28. hydraulic cylinder; 29. ​​shell. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example:

[0038] Please see attached Figure 1 -Attached Figure 4The embodiment of the present invention provides a rapid mold changing device for a three-color injection molding machine, including a mold changing plate 1, an upper surface of the mold changing plate 1 is fixedly connected with an electric slide rail 2, an outer wall of the electric slide rail 2 is provided with an electric slider 3, the outer wall of the electric slider 3 is slidably connected to the inner wall of the mold changing plate 1, an upper surface of the electric slider 3 is fixedly connected with a cylinder 4, an output end of the cylinder 4 is fixedly connected with a connecting rod 5, an outer wall of the connecting rod 5 is rotatably connected with a rotating shaft 7, an outer wall of the rotating shaft 7 is fixedly connected with an adjusting rod 8, an outer wall of the adjusting rod 8 is rotatably connected with a limiting plate 6, a lower surface of the limiting plate 6 is fixedly connected to the upper surface of the electric slider 3, an outer wall of the adjusting rod 8 is rotatably connected with a connecting arm 9, an inner wall of the connecting arm 9 is rotatably connected with a limiting rod 10, an outer wall of the limiting rod 10 The wall is rotatably connected to the inner wall of the limit plate 6, the lower surface of the connecting arm 9 is fixedly connected to the pressing plate 11, the inner wall of the template changer 1 is slidably connected to the base 12, the upper surface of the base 12 is fixedly connected to the movable mold 13, the outer wall of the movable mold 13 is slidably connected to the fixed film 20, and the outer wall of the template changer 1 is provided with a steering adjustment component; the steering adjustment component includes a connecting column 15, the outer wall of the connecting column 15 is fixedly connected to the outer wall of the template changer 1, the outer wall of the connecting column 15 is rotatably connected to the slide plate 16, the outer wall of the slide plate 16 is fixedly connected to the motor 17, the output end of the motor 17 is fixedly connected to the first gear 18, the outer wall of the first gear 18 is meshingly connected to the second gear 19, and the inner wall of the second gear 19 is fixedly connected to the outer wall of the connecting column 15;

[0039] Specifically, the electric slide rail 2 and the electric slider 3 and the electric cylinder 4 on the template changer 1 move backward, and the movable mold 13 is lifted by the gantry crane, and the base 12 is inserted into the positioning groove 14 by the movable mold 13, and the electric slider 3 moves forward. At this time, the connecting rod 5 and the rotating shaft 7 are driven to rise by the cylinder 4, and the connecting arm 9 is driven by the limit of the rotating shaft 7 and the adjusting rod 8. Under the limit of the limit rod 10 and the limit plate 6, the connecting arm 9 drives the pressing plate 11 to press the base 12 to fix it. During use, the movable mold can be quickly installed, and the installation principle of the fixed mold is the same as that of the movable mold. In the process, the required hydraulic clamp size can be selected according to the size of the mold base and equipment. It has wide applicability and pneumatic multi-circuit control, providing safety and multiple operation modes. The pneumatic phase is converted to hydraulic drive, which saves energy and is safe and stable. The movable table and the fixed side table are respectively controlled by two circuits and controlled separately to ensure that the oil pipe will not break and the mold will not be loosened. In the process of use, the motor 17 drives the first gear 18 to rotate under the limit of the slide plate 16, and the first gear 18 drives the second gear 19 and the connecting column 15 to rotate, which plays an effect of rotating the movable mold for injection molding during use.

[0040] Please see attached Figure 2 and attached Figure 5The outer wall of the fixed film 20 is slidably connected with the base 12, and the outer wall of the electric slider 3 is slidably connected to the inner wall of the fixed film 20; the inner wall of the template 1 is provided with a positioning groove 14, and the outer wall of the base 12 is slidably connected to the inner wall of the positioning groove 14; a bellows 22 is arranged inside the electric slider 3, and a stainless steel mesh sleeve 21 is arranged on the outer wall of the bellows 22, and the outer wall of the stainless steel mesh sleeve 21 is fixedly connected to the outer wall of the electric slider 3; the outer wall of the bellows 22 is fixedly connected with the stator 23, and a rotating bearing is arranged inside the stator 23, and the inner wall of the rotating bearing is fixedly connected with the rotor 24;

[0041] Specifically, a 304 stainless steel mesh sleeve 21 is added to the high-pressure oil pipe to prevent high-temperature bursting during use. The air pipe and the wire are protected by a bellows 22 to prevent injury and be safer. The hydraulic clamp adopts a special sealing ring, which is heat-resistant and safe. The outside of the hydraulic clamp is surface treated for protection. During use, when the connecting column 15 rotates, the stator 23 rotates on the outer wall of the rotor 24, and the stator 23 and the rotor 24 can also rotate with each other. During use, the cables and pipes will not be entangled due to the rotation of the connecting column 15, thereby further increasing the safety of use.

[0042] Please see attached Figure 1 and Figure 5 The outer wall of the rotor 24 is rotatably connected to the inside of the stator 23, and a channel 25 is opened inside the rotor 24; a slide table 26 is fixedly connected to the lower surface of the slide plate 16, and a slide column 27 is slidably connected to the inner wall of the slide table 26, and both ends of the slide column 27 are fixedly connected to the shell 29; the outer wall of the shell 29 is fixedly connected to the hydraulic cylinder 28, and the output end of the hydraulic cylinder 28 is fixedly connected to the outer wall of the rear side of the slide plate 16;

[0043] Specifically, the slide 26 under the slide plate 16 plays a role of limiting support during use, and can increase the guidance and mold centering effects during the mold closing process. The hydraulic cylinder 28 plays a driving effect during use, and the slide 26 and the slide columns 27 and 30 play a positioning and supporting effect.

[0044] Please see attached Figure 6 , the rapid mold change system of the three-color injection molding machine includes:

[0045] Fixture adaptation module, control mode module, drive energy saving module, table control module, machine joint module, hydraulic circuit module, power failure protection module and protection module;

[0046] The fixture adapter module is used to select the appropriate hydraulic fixture size according to the mold base and equipment size;

[0047] The control mode module is used to provide a safe operation mode through pneumatic multi-circuit control;

[0048] The drive energy-saving module is used for converting the gas pressure drive mode to the oil pressure drive mode;

[0049] The table control module is used for the movable table and the fixed side table to be controlled separately by two circuits;

[0050] The machine joint module is used to connect with the machine control box, and the machine will be automatically forced to shut down when the system is abnormal;

[0051] The hydraulic circuit module is used for long-term pressure holding and pressure detection functions to detect the stability and safety of the hydraulic circuit;

[0052] The power-off protection module is used to automatically clamp the mold when the power is off;

[0053] The protection module is used for the protection of the stainless steel mesh sleeve 21 of the high-pressure oil pipe and the corrugated tube 22 of the air pipe and the electric wire.

[0054] Specifically, the movable platen and the fixed side platen are controlled by two circuits and controlled separately to ensure that the oil pipe will not break and cause the mold to loosen. They are connected to the machine control box. If the system is abnormal, the machine will be automatically forced to shut down. The oil pressure alarm device ensures the safety of the mold. It is small in size, easy to install, and saves space. It has a quick mold change system safety protection function. Each oil pressure circuit has a long-term pressure holding function for 72 hours and is not affected by power outages and air pressure loss. Each oil pressure circuit has a pressure detection function. When any circuit is lower than the safety pressure, it will immediately alarm and operate the mold loosening switch for two protections. This system has the function of automatic mold clamping when power is off. Through precise measurement and calculation, the structural characteristics, load-bearing capacity and other factors of the mold base and equipment are fully considered. Select the most matching size from the rich fixture specifications to ensure the perfect fit between the fixture and the mold and equipment, and achieve stable clamping and efficient operation. The control mode module adopts advanced pneumatic multi-circuit control technology and carefully designs a variety of operation modes. Each mode has undergone strict safety evaluation and optimization to adapt to different production scenarios and operation requirements, and to maximize the safety of operators and the stable operation of equipment. The drive energy-saving module conducts in-depth research on the principles and characteristics of pneumatic to hydraulic drive, optimizes the energy conversion process, and improves drive efficiency. While reducing energy consumption, it ensures that the output power is stable, strong and continuous, providing reliable power support for the entire mold change process, and using innovative circuit crossover. Control technology, independent and precise control of the movable platen and the fixed side platen. This control method can not only realize the flexible movement and precise positioning of the platen, but also ensure that the movement of each platen is independent, accurate and non-interfering under complex working conditions, and establish an efficient, stable and real-time connection with the machine control box. Through the intelligent monitoring and data interaction system, it can quickly sense and respond to any abnormal situation in the system, and promptly trigger the automatic forced shutdown mechanism of the machine to minimize potential risks and losses. Equipped with high-precision sensors and intelligent monitoring systems, it can achieve long-term stable pressure holding of the oil pressure circuit, continuously monitor the subtle changes in oil pressure, and promptly discover and warn of any possible impact on system safety and stability. It can prevent certain pressure fluctuations or abnormalities to ensure that the oil pressure circuit is always in a safe and reliable working state. It has a built-in sensitive power-off sensing device and an efficient emergency actuator. Once a power outage occurs, it can instantly start the automatic mold clamping function to effectively prevent the mold from loosening or shifting due to power outages, ensure the safety of equipment and molds, and reduce production risks and losses caused by sudden power outages. Carefully select high-quality stainless steel mesh sleeves and bellows materials, combined with professional installation technology and strict quality inspection standards, to provide all-round and multi-level protection for high-pressure oil pipes, air pipes and wires, effectively resist external physical damage, high temperature, corrosion and other adverse factors, extend the service life of the equipment, and improve the operating stability and safety of the system.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid mold changing device for a three-color injection molding machine, comprising a mold changing plate (1), characterized in that: The upper surface of the template changer (1) is fixedly connected to an electric slide rail (2), the outer wall of the electric slide rail (2) is provided with an electric slider (3), the outer wall of the electric slider (3) is slidably connected to the inner wall of the template changer (1), the upper surface of the electric slider (3) is fixedly connected to a cylinder (4), the output end of the cylinder (4) is fixedly connected to a connecting rod (5), the outer wall of the connecting rod (5) is rotatably connected to a rotating shaft (7), the outer wall of the rotating shaft (7) is fixedly connected to an adjusting rod (8), the outer wall of the adjusting rod (8) is rotatably connected to a limiting plate (6), and the lower surface of the limiting plate (6) is fixedly connected to the lower surface of the limiting plate (6). The upper surface of the electric slider (3) is connected, the outer wall of the adjusting rod (8) is rotatably connected to a connecting arm (9), the inner wall of the connecting arm (9) is rotatably connected to a limiting rod (10), the outer wall of the limiting rod (10) is rotatably connected to the inner wall of the limiting plate (6), the lower surface of the connecting arm (9) is fixedly connected to a pressing plate (11), the inner wall of the changing mold plate (1) is slidably connected to a base (12), the upper surface of the base (12) is fixedly connected to a movable mold (13), the outer wall of the movable mold (13) is slidably connected to a fixed film (20), and the outer wall of the changing mold plate (1) is provided with a steering adjustment component.

2. The rapid mold changing device for a three-color injection molding machine according to claim 1, characterized in that: The steering adjustment assembly comprises a connecting column (15), the outer wall of the connecting column (15) is fixedly connected to the outer wall of the template (1), the outer wall of the connecting column (15) is rotatably connected to a slide plate (16), the outer wall of the slide plate (16) is fixedly connected to a motor (17), the output end of the motor (17) is fixedly connected to a first gear (18), the outer wall of the first gear (18) is meshingly connected to a second gear (19), and the inner wall of the second gear (19) is fixedly connected to the outer wall of the connecting column (15).

3. The rapid mold change device for a three-color injection molding machine according to claim 1, characterized in that: The outer wall of the fixed film (20) is slidably connected to a base (12), and the outer wall of the electric slider (3) is slidably connected to the inner wall of the fixed film (20).

4. The rapid mold change device for a three-color injection molding machine according to claim 1, characterized in that: The inner wall of the template changer (1) is provided with a positioning groove (14), and the outer wall of the base (12) is slidably connected to the inner wall of the positioning groove (14).

5. The rapid mold change device for a three-color injection molding machine according to claim 1, characterized in that: A bellows (22) is arranged inside the electric slider (3), a stainless steel mesh sleeve (21) is arranged on the outer wall of the bellows (22), and the outer wall of the stainless steel mesh sleeve (21) is fixedly connected to the outer wall of the electric slider (3).

6. The rapid mold change device for a three-color injection molding machine according to claim 5, characterized in that: The outer wall of the bellows (22) is fixedly connected to a stator (23), a rotary bearing is provided inside the stator (23), and the inner wall of the rotary bearing is fixedly connected to a rotor (24).

7. The rapid mold change device for a three-color injection molding machine according to claim 6, characterized in that: The outer wall of the rotor (24) is rotatably connected to the inside of the stator (23), and a channel (25) is opened inside the rotor (24).

8. The rapid mold change device for a three-color injection molding machine according to claim 2, characterized in that: The lower surface of the slide plate (16) is fixedly connected to a slide table (26), the inner wall of the slide table (26) is slidably connected to a slide column (27), and both ends of the slide column (27) are fixedly connected to a housing (29).

9. The rapid mold change device for a three-color injection molding machine according to claim 8, characterized in that: The outer wall of the housing (29) is fixedly connected to a hydraulic cylinder (28), and the output end of the hydraulic cylinder (28) is fixedly connected to the rear outer wall of the slide plate (16).

10. A rapid mold change system for a three-color injection molding machine, applied to the rapid mold change equipment for a three-color injection molding machine according to any one of claims 1 to 9, characterized in that: include: Fixture adaptation module, control mode module, drive energy saving module, table control module, machine joint module, hydraulic circuit module, power failure protection module and protection module; The fixture adapter module is used to select the appropriate hydraulic fixture size according to the size of the mold base and the equipment; The control mode module is used to provide a safe operation mode through pneumatic multi-circuit control; The drive energy-saving module is used for converting the gas pressure drive mode to the oil pressure drive mode; The table control module is used for the movable table and the fixed side table to be controlled separately by two circuits; The machine joint module is used to connect with the machine control box, and the machine will automatically shut down when the system is abnormal; The hydraulic circuit module is used for long-term pressure holding and pressure detection functions to detect the stability and safety of the hydraulic circuit; The power-off protection module is used for automatically clamping the mold when the power is off; The protection module is used for protecting the stainless steel mesh sleeve (21) of the high-pressure oil pipe and the corrugated pipe (22) of the air pipe and the electric wire.

Images