Self-cleaning radial extrusion tube making machine

Abstract

This utility model relates to the field of concrete pipe production technology, and discloses a self-cleaning radial extrusion pipe forming machine. It includes a base, with a support plate parallel to the top of the base. The bottom corners of the support plate are connected to the base via support columns. A circular groove is formed in the middle of the support plate, and an extrusion mechanism is arranged above the groove. The extrusion mechanism is mounted on a lifting frame, which is fixed to the support plate. An annular seat is coaxially mounted on the inner wall of the circular groove. At least two spaced strip plates are arranged at an angle on the inner side of the annular seat. A hydraulic cylinder is vertically mounted on the middle of the strip plate near the annular seat, and the hydraulic cylinder is mounted on the outer wall of the annular seat. This utility model, through a scraper and brush driven by a hydraulic cylinder, can automatically scrape off the adhering concrete when the extrusion head and drive shaft are raised and rotated, preventing the concrete from solidifying and clumping, which could cause the equipment's center of gravity to shift or be damaged. It also ensures the forming quality of the inner wall of the subsequent pipe.

Description

Technical Field

[0001] This utility model relates to the field of concrete pipe production technology, and in particular to a self-cleaning radial extrusion pipe making machine. Background Technology

[0002] A radial extrusion pipe forming machine is a device used to produce concrete drainage pipes, especially suitable for producing small and medium diameter pipes. Its working principle involves using the rotational motion of the spindle to extrude dry, hard concrete through an extrusion head, forming the pipe axially to produce cement concrete pipes and reinforced concrete pipes.

[0003] When using a radial extrusion pipe-making machine, the extrusion head needs to be placed inside a tree-shaped pipe shell to extrude concrete onto the inner wall of the shell. Therefore, the concrete must be poured in from the top of the shell, resulting in concrete adhering to the extrusion head and its drive shaft. After the concrete solidifies, it clumps on the extrusion head and drive shaft, causing a shift in the extrusion head's center of gravity. Furthermore, the solidified concrete on the extrusion head affects the subsequent forming of the inner wall of the concrete pipe. Additionally, if the concrete solidified on the extrusion head or drive shaft breaks, it can easily damage the extrusion head or drive shaft as well. To address these issues, we propose a self-cleaning radial extrusion pipe-making machine. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a self-cleaning radial extrusion tube making machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a self-cleaning radial extrusion tube making machine, including a base, with a support plate arranged parallel above the base, and the bottom corners of the support plate connected to the base by support columns.

[0007] A circular groove is provided in the middle of the support plate, and a pressing mechanism is provided above the circular groove. The pressing mechanism is provided on the lifting frame, and the lifting frame is fixed on the support plate.

[0008] An annular seat is coaxially mounted on the inner wall of a circular groove. At least two spaced strip plates are provided on the inner side of the annular seat. The strip plates are inclined, and a hydraulic cylinder is vertically mounted on the middle of the side of the strip plate near the annular seat. The hydraulic cylinder is mounted on the outer wall of the annular seat. A scraper is vertically mounted on the other side of the strip plate, and a brush is also mounted on the side of the strip plate. The brushes are arranged on the side of the scraper.

[0009] Preferably, a control box is installed on one of the support columns, and a controller is installed inside the control box. The controller is connected to the hydraulic cylinder via a wire.

[0010] Preferably, the extrusion mechanism includes a drive shaft, an extrusion head is mounted at the bottom of the drive shaft, a speed reducer is connected to the top of the extrusion head, and a drive motor is mounted on the speed reducer. The speed reducer is mounted on a lifting frame, and both the speed reducer and the drive motor are connected to a controller via wires.

[0011] Preferably, an arc-shaped groove is provided in the middle of the side of the scraper away from the strip plate, and the arc-shaped groove corresponds to the outer wall of the extrusion head.

[0012] Preferably, the lifting frame includes a U-shaped frame with the opening facing downwards and the bottom of the U-shaped frame fixed to a support plate. Linear motors are installed on both sides inside the U-shaped frame. The linear motors are connected to a controller via wires. A crossbeam is provided between the two linear motors, and the ends of the crossbeam are fixed to the linear motors. A reducer is installed on the top of the crossbeam, and a drive shaft passes through the crossbeam and is rotatably connected to the crossbeam.

[0013] Preferably, a guide shaft is provided parallel to the side of the hydraulic cylinder, one end of the guide shaft is fixed to the strip plate, and the other end of the guide shaft slides through the annular seat.

[0014] Preferably, a water pump is provided on one side of the annular seat, the water pump is fixed on the support plate, and the water pump is connected to the controller through a wire. A U-shaped connecting pipe is installed at the outlet of the water pump, and a nozzle is installed at the other end of the connecting pipe, with the nozzle facing the axis of the annular seat. A water supply pipe is installed at the inlet of the water pump, and the other end of the water supply pipe is installed on a water tank, which is placed on one side of the base.

[0015] The design scheme proposed in this utility model has the following beneficial effects in application:

[0016] 1. This utility model uses a scraper and brush driven by a hydraulic cylinder to automatically scrape off the attached concrete when the extrusion head and drive shaft are raised, lowered and rotated, so as to avoid the concrete solidifying and clumping, which would cause the equipment's center of gravity to shift or be damaged, while ensuring the forming quality of the inner wall of the subsequent pipe.

[0017] 2. This utility model uses a nozzle to spray water to rinse the extrusion head and drive shaft, and in conjunction with a scraper and brush, it further enhances the cleaning effect, reduces the frequency of manual cleaning, and improves the stability of continuous operation of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the bottom structure of the support plate of this utility model;

[0020] Figure 3 This is a schematic diagram of the top structure of the support plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the strip plate structure of this utility model.

[0022] In the diagram: 1. Base; 2. Support plate; 3. Support column; 4. Circular groove; 5. Drive shaft; 6. Extrusion head; 7. Reducer; 8. Drive motor; 9. Crossbeam; 10. Linear motor; 11. U-shaped frame; 12. Ring seat; 13. Strip plate; 14. Hydraulic cylinder; 15. Guide shaft; 16. Scraper; 17. Arc groove; 18. Brush; 19. Water pump; 20. Connecting pipe; 21. Nozzle; 22. Water supply pipe; 23. Water tank; 24. Control box. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-4 A self-cleaning radial extrusion tube making machine includes a base 1, and a support plate 2 is provided parallel above the base 1. The bottom corners of the support plate 2 are connected to the base 1 by support columns 3.

[0025] like Figure 1 and Figure 2 As shown, a circular groove 4 is provided in the middle of the support plate 2, and a pressing mechanism is provided above the circular groove 4. The pressing mechanism is set on the lifting frame, and the lifting frame is fixed on the support plate 2. The pressing mechanism can move freely up and down below the support plate 2 under the action of the lifting frame.

[0026] The extrusion mechanism includes a drive shaft 5, an extrusion head 6 is mounted at the bottom of the drive shaft 5, a reducer 7 is connected to the top of the extrusion head 6, and a drive motor 8 is mounted on the reducer 7. The reducer 7 is mounted on a lifting frame, and the drive motor 8 provides power for the rotation of the extrusion head 6.

[0027] In addition, the lifting frame includes a U-shaped frame 11 with its opening facing downwards, and the bottom of the U-shaped frame 11 is fixed to the support plate 2. Linear motors 10 are installed on both sides inside the U-shaped frame 11, and a crossbeam 9 is set between the two linear motors 10. The end of the crossbeam 9 is fixed to the linear motor 10. The reducer 7 is installed on the top of the crossbeam 9, and the drive shaft 5 passes through the crossbeam 9 and is rotatably connected to the crossbeam 9. In actual use, the two linear motors 10 operate synchronously, allowing the extrusion head 6 to perform linear lifting and lowering operations while rotating continuously.

[0028] Specifically, the tree-shaped tube is placed on the base 1 and aligned with the extrusion head 6. Concrete is then poured into the tube from the top. As concrete is continuously added, the extrusion head 6 descends into the tube and rotates and rises and falls continuously, thereby extruding the concrete against the inner wall of the tube to form the desired concrete tube.

[0029] In the production of concrete pipes, such as Figure 1 and Figure 4 As described, an annular seat 12 is coaxially mounted on the inner wall of the circular groove 4. At least two spaced strip plates 13 are provided on the inner side of the annular seat 12. The strip plates 13 are inclined, and a hydraulic cylinder 14 is vertically mounted on the middle of the side of the strip plate 13 closest to the annular seat 12. The hydraulic cylinder 14 is mounted on the outer wall of the annular seat 12. A scraper 16 is vertically mounted on the other side of the strip plate 13, and brushes 18 are also mounted on the side of the strip plate 13, arranged on the scraper 16. On the side, the hydraulic cylinder 14 pushes the brush 18 and scraper 16 to abut against the drive shaft 5. As the drive shaft 5 rises and falls and rotates, the scraper 16 scrapes off the concrete adhering to the drive shaft 5. The operation of the hydraulic cylinder 14 adjusts the position of the scraper 16. After the extrusion head 6 approaches the scraper 16, the hydraulic cylinder 14 drives the scraper 16 to move to a position corresponding to the side of the extrusion head 6. This can scrape the side of the extrusion head 6 and prevent concrete from adhering to the side of the extrusion head 6.

[0030] In order to improve the effect of the scraper 16 on the extrusion head 6, an arc-shaped groove 17 is provided in the middle of the side of the scraper 16 away from the strip plate 13. The arc-shaped groove 17 corresponds to the outer wall of the extrusion head 6, increasing the contact area between the scraper 16 and the outer wall of the extrusion head 6, and improving the effect of the scraper 16 on the extrusion head 6.

[0031] Furthermore, a guide shaft 15 is provided parallel to the side of the hydraulic cylinder 14. One end of the guide shaft 15 is fixed to the strip plate 13, and the other end of the guide shaft 15 slides through the annular seat 12 to guide the movement of the strip plate 13, improve the stability of the strip plate 13 when it moves, and ensure the corresponding effect of the scraper 16 with the extrusion head 6 and the drive shaft 5.

[0032] It should be noted that a water pump 19 is provided on one side of the annular seat 12. The water pump 19 is fixed on the support plate 2. A U-shaped connecting pipe 20 is installed at the outlet of the water pump 19. A nozzle 21 is installed at the other end of the connecting pipe 20. The nozzle 21 is positioned facing the axis of the annular seat 12. A water supply pipe 22 is installed at the inlet of the water pump 19. The other end of the water supply pipe 22 is installed on the water tank 23, and the water tank 23 is placed on one side of the base 1. While scraping the material, the nozzle 21 will continuously spray water onto the drive shaft 5 and the extrusion head 6 to clean the concrete on them and improve the cleaning effect of the concrete.

[0033] Specifically, a control box 24 is installed on one of the support columns 3. The control box 24 contains a controller, which is connected to the hydraulic cylinder 14, linear motor 10, reducer 7, drive motor 8, and water pump 19 via wires. The controller is one of a PLC logic controller, a control motherboard, or a control host. The length of the drive shaft 5, the travel length of the extrusion head 6, and the thickness of the extrusion head 6 can be input through the controller, so that the position adjustment of the strip plate 13 and the lifting and lowering of the extrusion head 6 can be automatically adjusted, improving the convenience of using the device.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-cleaning radial extrusion tube-making machine, characterized in that: Includes a base (1), and a support plate (2) is provided parallel above the base (1). The bottom corners of the support plate (2) are connected to the base (1) by support columns (3). A circular groove (4) is provided in the middle of the support plate (2), and an extrusion mechanism is provided above the circular groove (4). The extrusion mechanism is provided on the lifting frame, and the lifting frame is fixed on the support plate (2). An annular seat (12) is coaxially mounted on the inner wall of the circular groove (4). At least two spaced strip plates (13) are provided on the inner side of the annular seat (12). The strip plates (13) are inclined. A hydraulic cylinder (14) is vertically mounted on the middle of the side of the strip plate (13) near the annular seat (12). The hydraulic cylinder (14) is mounted on the outer wall of the annular seat (12). A scraper (16) is vertically mounted on the other side of the strip plate (13). A brush (18) is also mounted on the side of the strip plate (13). The brushes (18) are arranged on the side of the scraper (16).

2. The self-cleaning radial extrusion tube making machine according to claim 1, characterized in that: A control box (24) is installed on one of the support columns (3). The control box (24) contains a controller, which is connected to the hydraulic cylinder (14) via a wire.

3. The self-cleaning radial extrusion tube making machine according to claim 2, characterized in that: The extrusion mechanism includes a drive shaft (5), an extrusion head (6) is installed at the bottom of the drive shaft (5), a speed reducer (7) is connected to the top of the extrusion head (6), and a drive motor (8) is installed on the speed reducer (7). The speed reducer (7) is installed on the lifting frame, and the speed reducer (7) and the drive motor (8) are both connected to the controller through wires.

4. The self-cleaning radial extrusion tube making machine according to claim 3, characterized in that: An arc-shaped groove (17) is provided in the middle of the side of the scraper (16) away from the strip plate (13), and the arc-shaped groove (17) corresponds to the outer wall of the extrusion head (6).

5. A self-cleaning radial extrusion tube making machine according to claim 3, characterized in that: The lifting frame includes a U-shaped frame (11), with the U-shaped frame (11) opening downwards and the bottom of the U-shaped frame (11) fixed on the support plate (2). Linear motors (10) are installed on both sides inside the U-shaped frame (11). The linear motors (10) are connected to the controller through wires. A crossbeam (9) is set between the two linear motors (10). The end of the crossbeam (9) is fixed to the linear motor (10). A reducer (7) is installed on the top of the crossbeam (9), and a drive shaft (5) passes through the crossbeam (9) and is rotatably connected to the crossbeam (9).

6. A self-cleaning radial extrusion tube making machine according to claim 2, characterized in that: A guide shaft (15) is provided parallel to the side of the hydraulic cylinder (14). One end of the guide shaft (15) is fixed on the strip plate (13), and the other end of the guide shaft (15) slides through the annular seat (12).

7. A self-cleaning radial extrusion tube making machine according to claim 1, characterized in that: A water pump (19) is provided on one side of the annular seat (12). The water pump (19) is fixed on the support plate (2) and is connected to the controller through a wire. A U-shaped connecting pipe (20) is installed at the outlet of the water pump (19). A nozzle (21) is installed at the other end of the connecting pipe (20). The nozzle (21) is set towards the axis of the annular seat (12). A water supply pipe (22) is installed at the inlet of the water pump (19). The other end of the water supply pipe (22) is installed on the water tank (23), and the water tank (23) is placed on one side of the base (1).

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