A core for a radial extrusion tube making machine
By designing the drive and fixing components of the radial extrusion tube making machine's inner core, the problem of the inner core being difficult to disassemble and adjust in height in the existing technology has been solved, realizing the rapid disassembly and height adjustment of the inner core and improving tube making efficiency and flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏威姿曼机械有限公司
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-24
AI Technical Summary
The inner core of the existing radial extrusion tube making machine is difficult to disassemble and adjust in height quickly, resulting in complicated cleaning and low tube making efficiency.
A radial extrusion tube making machine inner core was designed, comprising a drive assembly and a fixing assembly. The drive assembly drives the sliding column to slide to disassemble the sleeve, and the fixing assembly adjusts the length of the fixed tube through the limiting column and the limiting groove, so as to realize the quick disassembly and adjustment of the cement tube length.
It enables quick disassembly and height adjustment of the inner core, simplifies the cleaning process, and improves tube manufacturing efficiency and flexibility.
Smart Images
Figure CN224544898U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tube making machine technology, and in particular relates to an inner core of a radial extrusion tube making machine. Background Technology
[0002] Radial extrusion pipe making machines are used to produce concrete pipes. They apply pressure to concrete through an extrusion head that radially surrounds a die, causing the material to compact and form a pipe. Suitable for drainage pipes, water supply pipes, etc., they offer high production efficiency and produce high-strength products, and are widely used in municipal and water conservancy projects.
[0003] Most radial extrusion tube forming machine inner cores have several drawbacks, such as the inability to quickly disassemble them. When cleaning the annular groove between the outer mold and the inner core is required, workers need to use tools to disassemble the inner core, which is complex and time-consuming. Furthermore, the height of the radial extrusion tube forming machine inner core is fixed and cannot be adjusted according to the required height of the cement pipe, necessitating the replacement of inner cores of different lengths, leading to decreased tube forming efficiency. Therefore, we propose a radial extrusion tube forming machine inner core. Utility Model Content
[0004] The purpose of this invention is to provide an inner core for a radial extrusion tube forming machine to solve the problems mentioned in the background art.
[0005] In view of this, the present invention provides an inner core for a radial extrusion tube forming machine, including an outer mold, and further comprising:
[0006] A fixed column is fixedly installed inside the outer mold. A sleeve is fitted on the fixed column. A power cavity is opened inside the fixed column. Several sliding columns are slidably installed in the power cavity. The ends of the several sliding columns that are far apart from each other all penetrate the power cavity. The ends of the several sliding columns that are far apart from each other all extend into the sleeve. The ends of the several sliding columns that are far apart from each other are inserted into the sleeve.
[0007] A driving component, located within a fixed column, is used to drive a plurality of sliding columns to slide.
[0008] A fixed tube is inserted and installed on the top of a sleeve. Both the top of the sleeve and the fixed tube have two limiting grooves. Two limiting posts are fixedly installed on the bottom of the fixed tube. The lower ends of the two limiting posts extend into the corresponding two limiting grooves, and the two limiting posts are inserted and engaged with the corresponding two limiting grooves.
[0009] A fixing component is located inside a fixing tube and is used to fix the position of the fixing tube.
[0010] In this technical solution, when cement pipes need to be made, cement is first poured into the outer mold. The outer walls of the sleeve and the fixed pipe form an annular space with the inner wall of the outer mold. Cement injected into the annular space can form a cement pipe. After the cement pipe is taken out, the set drive component can drive several sliding columns to slide and move closer to each other. When several sliding columns have completely entered the power chamber, the fixed pipe can be pulled and the sleeve can be taken out upward. Then the cement residue on the inner wall of the outer mold and the outer walls of the sleeve and the fixed pipe can be cleaned to ensure that it will not affect the next production of cement pipes.
[0011] When the required length of cement pipe is short, the fixed pipe can be rotated using the fixed assembly. The fixed pipe causes two limiting posts to slide within two limiting grooves. When both limiting posts have slid to the appropriate positions, the fixed pipe can be removed upwards, and the two limiting posts will disengage from the two limiting grooves. This allows for the production of shorter cement pipes. By reversing the above operation, the fixed pipe can be installed on the top of the sleeve, and two fixed pipes can be spliced together to produce longer cement pipes. The operation is convenient, quick, and time-saving.
[0012] In the above technical solution, the driving component further includes:
[0013] A hydraulic cylinder is fixedly installed inside a power chamber and located below several sliding columns. A sliding block is fixedly installed on the telescopic end of the hydraulic cylinder. Several connecting rods are rotatably installed on the sliding block. The upper ends of the connecting rods are rotatably connected to the several sliding columns respectively. The sliding block is slidably connected to the power chamber.
[0014] In this technical solution, the hydraulic cylinder is activated, and the telescopic end of the hydraulic cylinder drives the sliding block to slide downward. The sliding block pulls several connecting rods to rotate, and the several connecting rods pull several sliding columns to slide and move closer to each other. When all the sliding columns have completely entered the power chamber, the fixed tube can be pulled and the sleeve can be taken out upward.
[0015] In the above technical solution, the fixing component further includes:
[0016] A sliding groove is formed inside a fixed tube. A pull rod is slidably installed inside the sliding groove. A spring is sleeved on the pull rod. A sliding rod is fixedly installed at the bottom of the pull rod. The lower end of the sliding rod passes through the sliding groove and extends into the sleeve. The lower end of the sliding rod is inserted into the sleeve. The sliding rod is slidably connected to the sliding groove.
[0017] In this technical solution, pulling the lever upward causes it to compress the spring, which in turn causes the sliding rod to slide upward. Once the lower end of the sliding rod disengages from the sleeve, rotating the fixed tube causes the two limiting posts to slide within their respective limiting grooves. When both limiting posts have slid to their appropriate positions, the fixed tube can be removed upward, and the two limiting posts disengage from their respective limiting grooves, allowing for the production of shorter cement pipes.
[0018] In the above technical solution, furthermore, a plurality of guide strips are fixedly installed on the circumferential sidewall of the fixed column, and the plurality of guide strips are all inserted into the sleeve.
[0019] In this technical solution, when the sleeve is fitted onto the fixed post, several guide strips can pre-position the sleeve.
[0020] In the above technical solution, further, the two ends of the spring are welded to the inner wall of the sliding groove and the sliding rod, respectively.
[0021] In this technical solution, the spring is ensured to be used stably.
[0022] In the above technical solution, the cross-section of the limiting post is L-shaped.
[0023] In this technical solution, it is ensured that the limiting post can be locked in the corresponding limiting groove.
[0024] In the above technical solution, the sliding column and several guide strips are distributed in a ring at equal intervals on the fixed column.
[0025] In this technical solution, the sleeve is guaranteed to be stably fixed on the fixed column.
[0026] The beneficial effects of this utility model are:
[0027] 1. The inner core of this radial extrusion pipe-making machine, when it is necessary to make cement pipes, first pours cement into the outer mold. The outer walls of the sleeve and fixed pipe and the inner wall of the outer mold form an annular space. Cement injected into the annular space can form a cement pipe. After the cement pipe is taken out, the set drive component can drive several sliding columns to slide and move closer to each other. When several sliding columns have completely entered the power chamber, the fixed pipe can be pulled and the sleeve can be taken out upwards, which facilitates the disassembly of the fixed pipe and the sleeve. Then, the cement residue on the inner wall of the outer mold and the outer walls of the sleeve and fixed pipe can be cleaned to ensure that it will not affect the next production of cement pipes.
[0028] 2. The inner core of this radial extrusion pipe-making machine allows for the rotation of a fixed pipe when a shorter cement pipe is required. This fixed pipe drives two limiting posts to slide within two limiting grooves. When both limiting posts have slid to the appropriate positions, the fixed pipe can be removed upwards, and the two limiting posts disengage from their respective limiting grooves. This process allows for the production of shorter cement pipes. By reversing the above operation, the fixed pipe can be installed on the top of the sleeve, and two fixed pipes can be joined together to produce a longer cement pipe. The operation is convenient, quick, and time-saving. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0030] Figure 2 This is a schematic diagram of the partial explosion structure of this utility model;
[0031] Figure 3 This is one of the schematic diagrams of the cross-sectional structure of the sleeve of this utility model;
[0032] Figure 4 This is one of the schematic diagrams of the cross-sectional structure of the fixed column of this utility model;
[0033] Figure 5 This is the second schematic diagram of the cross-sectional structure of the fixed column of this utility model;
[0034] Figure 6 This is the second schematic diagram of the cross-sectional structure of the sleeve of this utility model;
[0035] Figure 7 This is a schematic diagram of the cross-sectional structure of the fixed tube of this utility model;
[0036] Figure 8 This is the third schematic diagram of the cross-sectional structure of the sleeve of this utility model.
[0037] The markings in the diagram are as follows:
[0038] 1. Outer mold; 2. Fixed column; 3. Power cavity; 4. Sliding column; 5. Sleeve; 6. Fixed tube; 7. Limiting groove; 8. Limiting column; 9. Hydraulic cylinder; 10. Sliding block; 11. Connecting rod; 12. Sliding groove; 13. Tie rod; 14. Spring; 15. Sliding rod; 16. Guide bar. Detailed Implementation
[0039] The following is in conjunction with the appendix Figure 1 - Figure 8 This application will be described in further detail.
[0040] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0041] Example 1: This example provides a radial extrusion tube forming machine inner core, including an outer mold 1, and further including:
[0042] Fixed column 2 is fixedly installed inside the outer mold 1. A sleeve 5 is fitted on the fixed column 2. A power cavity 3 is opened inside the fixed column 2. Several sliding columns 4 are slidably installed in the power cavity 3. The ends of the several sliding columns 4 that are far apart from each other all pass through the power cavity 3. The ends of the several sliding columns 4 that are far apart from each other all extend into the sleeve 5. And the ends of the several sliding columns 4 that are far apart from each other are inserted into the sleeve 5.
[0043] A drive assembly is located inside the fixed column 2 and is used to drive several sliding columns 4 to slide.
[0044] The fixed tube 6 is inserted into the top of the sleeve 5. Both the top of the sleeve 5 and the fixed tube 6 have two limiting grooves 7. The bottom of the fixed tube 6 is fixedly installed with two limiting posts 8. The lower ends of the two limiting posts 8 extend into the corresponding two limiting grooves 7 respectively. The two limiting posts 8 are inserted into the corresponding two limiting grooves 7 respectively.
[0045] The fixing component is located inside the fixing tube 6 and is used to fix the position of the fixing tube 6.
[0046] When cement pipes need to be made, cement is first poured into the outer mold 1. The outer walls of the sleeve 5 and the fixed pipe 6 form an annular space with the inner wall of the outer mold 1. Cement injected into the annular space can form a cement pipe. After the cement pipe is taken out, the set drive component can drive several sliding columns 4 to slide and move closer to each other. When several sliding columns 4 have completely entered the power chamber 3, the fixed pipe 6 can be pulled and the sleeve 5 can be taken out upward. Then the cement residue on the inner wall of the outer mold 1 and the outer walls of the sleeve 5 and the fixed pipe 6 can be cleaned to ensure that it will not affect the next production of cement pipes.
[0047] When the required length of cement pipe is short, the fixed pipe 6 can be rotated using the fixed assembly. The fixed pipe 6 drives the two limiting posts 8 to slide in the two limiting grooves 7 respectively. When both limiting posts 8 have slid to the appropriate position, the fixed pipe 6 can be taken out upwards, and the two limiting posts 8 will disengage from the two limiting grooves 7 respectively. This allows for the production of shorter cement pipes. By reversing the above operation, the fixed pipe 6 can also be installed on the top of the sleeve 5. At the same time, two fixed pipes 6 can be spliced together to produce a longer cement pipe. The operation is convenient, quick, and saves time.
[0048] In this embodiment, the driving component includes:
[0049] Hydraulic cylinder 9 is fixedly installed in power chamber 3 and located below several sliding columns 4. A sliding block 10 is fixedly installed on the telescopic end of hydraulic cylinder 9. Several connecting rods 11 are rotatably installed on the sliding block 10. The upper ends of the several connecting rods 11 are rotatably connected to several sliding columns 4 respectively. The sliding block 10 is slidably connected to power chamber 3.
[0050] When the hydraulic cylinder 9 is activated, the telescopic end of the hydraulic cylinder 9 drives the sliding block 10 to slide downward. The sliding block 10 pulls several connecting rods 11 to rotate. The several connecting rods 11 pull several sliding columns 4 to slide and move closer to each other. When the several sliding columns 4 have all completely entered the power chamber 3, the fixed tube 6 can be pulled and the sleeve 5 can be taken out upward.
[0051] In this embodiment, the fixing component includes:
[0052] A sliding groove 12 is formed inside the fixed tube 6. A pull rod 13 is slidably installed inside the sliding groove 12. A spring 14 is sleeved on the pull rod 13. A sliding rod 15 is fixedly installed at the bottom of the pull rod 13. The lower end of the sliding rod 15 passes through the sliding groove 12 and extends into the sleeve 5. The lower end of the sliding rod 15 is inserted into the sleeve 5. The sliding rod 15 is slidably connected to the sliding groove 12.
[0053] Pulling the lever 13 upwards causes the lever 13 to compress the spring 14, which in turn causes the lever 13 to slide the sliding rod 15 upwards. When the lower end of the sliding rod 15 disengages from the sleeve 5, the fixed tube 6 is rotated. The fixed tube 6 causes the two limiting posts 8 to slide in the two limiting grooves 7 respectively. When both limiting posts 8 have slid to the appropriate positions, the fixed tube 6 can be removed upwards. At the same time, the two limiting posts 8 disengage from the two limiting grooves 7 respectively, which can produce a shorter cement pipe.
[0054] Example 2:
[0055] This embodiment provides a radial extrusion tube forming machine inner core, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0056] In this embodiment, a number of guide strips 16 are fixedly installed on the circumferential sidewall of the fixed column 2, and the guide strips 16 are all inserted into the sleeve 5.
[0057] In this way, when the sleeve 5 is fitted onto the fixed post 2, several guide strips 16 can pre-position the sleeve 5.
[0058] Example 3:
[0059] This embodiment provides a radial extrusion tube forming machine inner core, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0060] In this embodiment, the two ends of the spring 14 are welded to the inner wall of the sliding groove 12 and the sliding rod 15, respectively.
[0061] This ensures that spring 14 can be used stably.
[0062] Example 4:
[0063] This embodiment provides a radial extrusion tube forming machine inner core, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0064] In this embodiment, the cross-section of the limiting post 8 is L-shaped.
[0065] This ensures that the limiting post 8 can be locked in the corresponding limiting groove 7.
[0066] Example 5:
[0067] This embodiment provides a radial extrusion tube forming machine inner core, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0068] In this embodiment, the sliding column 4 and several guide strips 16 are all distributed in a ring at equal intervals on the fixed column 2.
[0069] Among them, it is ensured that the sleeve 5 can be stably fixed on the fixed column 2.
[0070] Working principle: When cement pipes need to be made, cement is first poured into the outer mold 1. The outer walls of the sleeve 5 and the fixed pipe 6 form an annular space with the inner wall of the outer mold 1. Cement injected into the annular space can form a cement pipe. After the cement pipe is taken out, the hydraulic cylinder 9 can be activated. The telescopic end of the hydraulic cylinder 9 drives the sliding block 10 to slide downward. The sliding block 10 pulls several connecting rods 11 to rotate. The several connecting rods 11 pull several sliding columns 4 to slide and move closer to each other. When several sliding columns 4 have completely entered the power chamber 3, the fixed pipe 6 can be pulled and the sleeve 5 can be taken out upward. Then, the cement residue on the inner wall of the outer mold 1 and the outer walls of the sleeve 5 and the fixed pipe 6 can be cleaned to ensure that it will not affect the next production of cement pipes.
[0071] When the required length of cement pipe is short, first pull the lever 13 upwards. The lever 13 compresses the spring 14, causing the lever 13 to drive the sliding rod 15 upwards. After the lower end of the sliding rod 15 disengages from the sleeve 5, rotate the fixed tube 6. The fixed tube 6 drives the two limiting posts 8 to slide in the two limiting grooves 7 respectively. When both limiting posts 8 have slid to the appropriate positions, the fixed tube 6 can be removed upwards. At the same time, the two limiting posts 8 disengage from the two limiting grooves 7 respectively, which can produce a shorter cement pipe. Through the above reverse operation, the fixed tube 6 can also be installed on the top of the sleeve 5. At the same time, two fixed tubes 6 can be spliced together to produce a longer cement pipe. The operation is convenient, quick, and saves time.
[0072] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A radial extrusion tube forming machine inner core, comprising an outer mold (1), characterized in that, Also includes: A fixed column (2) is fixedly installed inside the outer mold (1). A sleeve (5) is fitted on the fixed column (2). A power cavity (3) is opened inside the fixed column (2). Several sliding columns (4) are slidably installed inside the power cavity (3). The ends of the several sliding columns (4) that are far apart from each other all penetrate the power cavity (3). The ends of the several sliding columns (4) that are far apart from each other all extend into the sleeve (5). The ends of the several sliding columns (4) that are far apart from each other are inserted into the sleeve (5). A driving component is located inside a fixed column (2) and is used to drive a plurality of sliding columns (4) to slide. A fixed tube (6) is inserted into the top of a sleeve (5). Both the top of the sleeve (5) and the fixed tube (6) have two limiting grooves (7). Two limiting posts (8) are fixedly installed at the bottom of the fixed tube (6). The lower ends of the two limiting posts (8) extend into the corresponding two limiting grooves (7). The two limiting posts (8) are inserted into the corresponding two limiting grooves (7). A fixing component is located inside the fixing tube (6) and is used to fix the position of the fixing tube (6).
2. The inner core of a radial extrusion tube-making machine according to claim 1, characterized in that, The driving component includes: A hydraulic cylinder (9) is fixedly installed in the power chamber (3) and located below a plurality of sliding columns (4). A sliding block (10) is fixedly installed on the telescopic end of the hydraulic cylinder (9). A plurality of connecting rods (11) are rotatably installed on the sliding block (10). The upper ends of the plurality of connecting rods (11) are rotatably connected to the plurality of sliding columns (4). The sliding block (10) is slidably connected to the power chamber (3).
3. The inner core of a radial extrusion tube-making machine according to claim 2, characterized in that, The fixing component includes: A sliding groove (12) is formed inside a fixed tube (6). A pull rod (13) is slidably installed inside the sliding groove (12). A spring (14) is sleeved on the pull rod (13). A sliding rod (15) is fixedly installed at the bottom of the pull rod (13). The lower end of the sliding rod (15) passes through the sliding groove (12) and extends into the sleeve (5). The lower end of the sliding rod (15) is inserted into the sleeve (5). The sliding rod (15) is slidably connected to the sliding groove (12).
4. The inner core of a radial extrusion tube-making machine according to claim 1, characterized in that, The circumferential sidewall of the fixed column (2) is fixedly installed with several guide strips (16), and the guide strips (16) are all inserted into the sleeve (5).
5. The inner core of a radial extrusion tube-making machine according to claim 3, characterized in that, The two ends of the spring (14) are welded to the inner wall of the sliding groove (12) and the sliding rod (15), respectively.
6. The inner core of a radial extrusion tube-making machine according to claim 1, characterized in that, The cross-section of the limiting post (8) is L-shaped.
7. The inner core of a radial extrusion tube-making machine according to claim 1, characterized in that, Several sliding columns (4) and several guide bars (16) are distributed in a ring at equal intervals on the fixed column (2).