PVC-O pipe expansion body mechanism

Abstract

The utility model discloses a PVC-O pipe expansion body mechanism which comprises a supporting sleeve and a sliding sleeve, a connecting assembly is installed on the supporting sleeve, the connecting assembly comprises a connecting sleeve and a taper sleeve, an air inlet assembly is installed on the connecting sleeve, the air inlet assembly comprises an inlet pipe and a through opening, an exhaust assembly is installed on the sliding sleeve, the exhaust assembly comprises a supporting sleeve and an exhaust pipe, and the exhaust pipe is connected with the supporting sleeve. The connecting sleeve is provided with a heating assembly, the heating assembly comprises electric heating wires and an inner groove, the inner groove is provided with a temperature control assembly, the PVC-O pipe expansion body mechanism can conduct heat to the inner side of the inner groove through the heat conducting piece, then the piston is controlled to move up and down through air expansion in the inner groove, and then the opening number of the electric heating wires is controlled; the temperature stability is guaranteed, then the temperature stability of the VC-O pipe is guaranteed, deformation caused by the high temperature of the VC-O pipe during expansion or damage caused by the low temperature of the VC-O pipe during expansion are avoided, the machining quality of the VC-O pipe is guaranteed, and the method is suitable for expansion machining of the PVC-O pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of PVC-O pipe expansion equipment, specifically to a PVC-O pipe expansion body mechanism. Background Technology

[0002] In the production and processing of VC-O pipes, PVC-O pipe expansion equipment is often required to obtain VC-O pipes with the desired inner diameter. Utility model patent application number CN201921616954.X discloses an expansion device for PVC-O pipe production. Since the air bladder is deflated when not inflated, it is easily inserted into the blank tube. Simply insert the air bladder into the blank tube, then inflate it to expand, and the orientation process can begin. This optimizes the continuous production process of PVC-O pipes, reduces labor intensity, lowers the scrap rate, shortens the orientation time, and automates the process. The degree of expansion can be significantly improved, and labor and production costs can be saved, enhancing market competitiveness. According to its publicly available technical solutions, existing PVC-O pipe expansion equipment has two main drawbacks. First, it cannot effectively control the temperature of the equipment, which can easily lead to deformation of the PVC-O pipe due to high temperature or damage to the PVC-O pipe during expansion due to low temperature, which is not conducive to ensuring the processing quality of the PVC-O pipe. Second, when using air pressure to control the expansion inner diameter of the PVC-O pipe, it cannot effectively ensure the stability of the air pressure, which can easily cause changes in the inner diameter of the PVC-O pipe due to high or low air pressure.

[0003] Therefore, how to design the expansion body mechanism of PVC-O pipe has become the problem we need to solve. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an expansion body mechanism for PVC-O pipes to solve the problems mentioned in the background art. This utility model is reasonably designed, convenient to use, and suitable for the expansion processing of PVC-O pipes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PVC-O pipe expansion body mechanism, including a support sleeve and a sliding sleeve, a connecting component installed on the support sleeve, the connecting component including a connecting sleeve and a conical sleeve, an air inlet component installed on the connecting sleeve, the air inlet component including an inlet pipe and a port, an exhaust component installed on the sliding sleeve, the exhaust component including a support sleeve and an exhaust pipe, a heating component installed on the connecting sleeve, the heating component including a heating wire and an inner groove, a temperature control component installed on the inner groove, the temperature control component including a piston and a spring, and a pressure control component installed on the support sleeve, the pressure control component including a motor and a gate.

[0006] Furthermore, the inlet pipe is bolted and sealed to one end of the connecting sleeve, the other end of the connecting sleeve is bolted and sealed to one end of the support sleeve, the other end of the support sleeve is integrally formed to one end of the tapered sleeve, and the other end of the tapered sleeve is integrally formed to one end of the sliding sleeve.

[0007] Furthermore, the inlets are respectively opened at the center of the connecting sleeve, the support sleeve, the conical sleeve, the sliding sleeve, and the support sleeve. The inlet pipe is connected to the outlet pipe through the inlet. A conical groove is opened on the outer side of the conical sleeve, and an annular groove is opened on the outer side of the sliding sleeve. The conical grooves are evenly distributed on the conical sleeve, and the annular grooves are evenly distributed on the sliding sleeve. Both the conical grooves and the annular grooves are connected to the inlets through the connecting pipe.

[0008] Furthermore, the heating wire is welded to the inner side of the sleeve, the heating wire is located inside the opening, the inner groove is opened inside the sleeve, a heat-conducting plate is welded to the inner wall of the inner groove, and the heat-conducting plate is sleeved on the outer side of the opening.

[0009] Furthermore, the top of the inner groove is connected to the outer side of the sleeve, the outer side of the piston is clamped on the inner wall of the top of the inner groove, the bottom of the piston is connected to the heat-conducting plate through a spring, an electrode is welded on the inner wall of the inner groove, the electrode is sleeved on the outer side of the piston, and the electrode is connected to the heating wire through an electric wire.

[0010] Furthermore, one end of the support sleeve is sealed and installed at the other end of the sliding sleeve by bolts, the pipe is sealed and installed at the other end of the support sleeve by bolts, the motor is installed at the top of the support sleeve by bolts, a guide groove is provided on the inner side of the support sleeve, the top of the gate plate is stuck in the inner side of the guide groove, and the bottom of the gate plate is sealed and fastened to the inner wall of the bottom of the opening.

[0011] Furthermore, a lead screw is welded onto the output shaft of the motor, and a thread groove is provided on the inner side of the gate plate. The bottom end of the lead screw is threaded onto the inner side of the thread groove.

[0012] Furthermore, a sliding groove is provided on the inner side of the support sleeve, the bottom of the sliding groove is connected to the top of the through-hole, a slider is stuck on the inner wall of the bottom of the sliding groove, the top of the slider is connected to the inner wall of the top of the sliding groove by a spring, and a button one and a button two are welded on the inner wall of the sliding groove. The button one and the button two are connected to the motor by wires, and the button one and the button two are located on the top and inner side of the slider, respectively.

[0013] Beneficial effects: 1. When using this PVC-O pipe expansion mechanism, the VC-O pipe is pushed to the right by the support sleeve. A high-pressure gas source is connected to the outside of the inlet pipe. After being heated by the heating wire, the high-pressure gas enters the inner side of the cone sleeve and annular groove through the port and connecting pipe. This allows the high-pressure gas to expand the VC-O pipe on the outside of the cone sleeve and sliding sleeve, reducing wear on the equipment and the VC-O pipe. When the temperature is high, the heat-conducting plate conducts heat to the inner side of the inner groove, causing the air in the inner groove to expand and push the piston upward. After the electrode separates from the piston, it closes the corresponding heating wire, reducing heating. When the temperature is low, the piston is pulled downward by the spring, increasing the number of heating wires that are open and improving the heating speed of the high-pressure gas. This ensures temperature stability and thus ensures the temperature stability of the VC-O pipe. It avoids deformation during expansion due to high VC-O pipe temperature or breakage during expansion due to low VC-O pipe temperature, ensuring the processing quality of the VC-O pipe.

[0014] 2. In use, the high-pressure air maintains a certain gap between the VC-O pipe and the sliding sleeve, allowing for smooth extraction after cooling. When the air pressure is high, the air pressure inside the port pushes the slider upward, pressing button one. The motor, via a lead screw, moves the gate upward, increasing the opening of the port and thus reducing the air pressure during expansion. When the air pressure is low, spring two pushes the slider downward, pressing button two. The motor, via a lead screw, moves the gate downward, closing the opening of the port and thus increasing the air pressure during expansion. This effectively ensures the stability of the air pressure, thereby ensuring the stability of the inner diameter of the expanded VC-O pipe.

[0015] 3. The expansion mechanism of this PVC-O pipe is reasonably designed, highly efficient and convenient to use, and suitable for expansion processing of PVC-O pipes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the PVC-O pipe expansion body mechanism of this utility model;

[0017] Figure 2 This is a cross-sectional view of the PVC-O pipe expansion body mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the sliding sleeve of the PVC-O pipe expansion body mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the sliding sleeve of the PVC-O pipe expansion body mechanism of this utility model;

[0020] In the diagram: 1. Support sleeve; 2. Sliding sleeve; 3. Connecting sleeve; 4. Inlet pipe; 5. Conical sleeve; 6. Conical groove; 7. Annular groove; 8. Connecting pipe; 9. Through port; 10. Support sleeve; 11. Pipe row; 12. Heating wire; 13. Inner groove; 14. Heat-conducting plate; 15. Piston; 16. Spring 1; 17. Electrode; 18. Motor; 19. Gate plate; 20. Lead screw; 21. Slider; 22. Spring 2; 23. Button 1; 24. Button 2. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 4This utility model provides a technical solution: a PVC-O pipe expansion body mechanism, including a support sleeve 1 and a sliding sleeve 2. A connecting assembly is installed on the support sleeve 1, the connecting assembly including a connecting sleeve 3 and a conical sleeve 5. An air inlet assembly is installed on the connecting sleeve 3, the air inlet assembly including an inlet pipe 4 and a port 9. An exhaust assembly is installed on the sliding sleeve 2, the exhaust assembly including a support sleeve 10 and an exhaust pipe 11. A heating assembly is installed on the connecting sleeve 3, the heating assembly including a heating wire 12 and an inner groove 13. A temperature control assembly is installed on the inner groove 13, the temperature control assembly including a piston 15 and a spring 16. The support sleeve... A pressure control assembly is installed on the support sleeve 10. The pressure control assembly includes a motor 18 and a gate 19. One end of the support sleeve 10 is bolted and sealed to the other end of the sliding sleeve 2. The pipe 11 is bolted and sealed to the other end of the support sleeve 10. The motor 18 is bolted to the top of the support sleeve 10. A guide groove is formed on the inner side of the support sleeve 10. The top of the gate 19 is engaged with the inner side of the guide groove. The bottom of the gate 19 is sealed and secured to the inner wall of the bottom of the through-hole 9. A lead screw 20 is welded to the output shaft of the motor 18. A threaded groove is formed on the inner side of the gate 19. The bottom end of the lead screw 20 passes through... The support sleeve 10 is threaded and installed inside the threaded groove. A sliding groove is formed on the inner side of the support sleeve 10. The bottom of the sliding groove is connected to the top of the through-hole 9. A slider 21 is secured to the inner wall of the bottom of the sliding groove. The top of the slider 21 is connected to the inner wall of the top of the sliding groove via a spring 22. Buttons 23 and 24 are welded to the inner wall of the sliding groove. Buttons 23 and 24 are connected to the motor 18 via wires. Buttons 23 and 24 are located at the top and inner side of the slider 21, respectively. During use, high-pressure air maintains a certain gap between the VC-O pipe and the sliding sleeve 2. After cooling, it can be easily extracted. When the air pressure is high, the air pressure in the port 9 pushes the slider 21, and the slider 21 presses the button 23 upward. The motor 18 drives the gate 19 upward through the lead screw 20, increasing the opening of the port 9 and thus reducing the air pressure during expansion. When the air pressure is low, the spring 22 pushes the slider 21 downward, and the slider 21 presses the button 24. The motor 18 drives the gate 19 downward through the lead screw 20, closing the opening of the port 9 and thus increasing the air pressure during expansion. This effectively ensures the stability of the air pressure and, consequently, the stability of the inner diameter of the expanded VC-O tube.

[0023] In this embodiment, the inlet pipe 4 is bolted and sealed to one end of the connecting sleeve 3, and the other end of the connecting sleeve 3 is bolted and sealed to one end of the support sleeve 1. The other end of the support sleeve 1 is integrally formed to one end of the conical sleeve 5, and the other end of the conical sleeve 5 is integrally formed to one end of the sliding sleeve 2. The through-hole 9 is respectively opened at the center of the connecting sleeve 3, the support sleeve 1, the conical sleeve 5, the sliding sleeve 2, and the support sleeve 10. The inlet pipe 4 is connected to the outlet pipe 11 through the through-hole 9. A conical groove 6 is opened on the outer side of the conical sleeve 5, and an annular groove 7 is opened on the outer side of the sliding sleeve 2. The conical grooves 6 are evenly distributed on the conical sleeve. 5. The annular grooves 7 are evenly distributed on the sliding sleeve 2. The conical grooves 6 and annular grooves 7 are both connected to the through-hole 9 through the connecting pipe 8. The heating wire 12 is welded to the inner side of the connecting sleeve 3. The heating wire 12 is located inside the through-hole 9. The inner groove 13 is opened inside the connecting sleeve 3. A heat-conducting plate 14 is welded to the inner wall of the inner groove 13. The heat-conducting plate 14 is sleeved on the outer side of the through-hole 9. The top of the inner groove 13 is connected to the outer side of the connecting sleeve 3. The outer side of the piston 15 is stuck on the inner wall of the top of the inner groove 13. The bottom of the piston 15 is connected to the heat-conducting plate through a spring 16. 14. An electrode 17 is welded to the inner wall of the inner groove 13. The electrode 17 is sleeved on the outer side of the piston 15. The electrode 17 is connected to the heating wire 12 via an electric wire. In use, the VC-O tube is pushed to the right through the support sleeve 1. The inlet pipe 4 is connected to a high-pressure gas source. After being heated by the heating wire 12, the high-pressure gas enters the inner side of the cone sleeve 6 and the annular groove 7 through the port 9 and the connecting pipe 8. This causes the high-pressure gas to expand the VC-O tube on the outer side of the cone sleeve 5 and the sliding sleeve 2, reducing wear on the equipment and the VC-O tube. When the temperature is high, the heat-conducting plate 14 conducts heat to the inner side. The air inside the inner groove 13 expands, pushing the piston 15 upward. After the electrode 17 separates from the piston 15, it closes the corresponding heating wire 12, reducing heating. When the temperature is low, the piston 15 is pulled downward by the spring 16, thereby increasing the number of heating wires 12 that are open, increasing the heating speed of the high-pressure gas, ensuring temperature stability, and thus ensuring the temperature stability of the VC-O tube. This avoids deformation during expansion due to high VC-O tube temperature or breakage during expansion due to low VC-O tube temperature, ensuring the processing quality of the VC-O tube.

[0024] This PVC-O pipe expansion mechanism provides power to all electrical equipment via an external power source. During use, the PVC-O pipe is pushed to the right by the support sleeve 1. A high-pressure gas source is connected to the inlet pipe 4. After being heated by the heating wire 12, the high-pressure gas enters the inner side of the cone sleeve 6 and annular groove 7 through the port 9 and connecting pipe 8. This causes the high-pressure gas to expand the PVC-O pipe on the outside of the cone sleeve 5 and sliding sleeve 2, reducing wear on the equipment and the PVC-O pipe. When the temperature is high, the heat-conducting plate 14 conducts heat to the inner side of the inner groove 13, causing the air in the inner groove 13 to expand and push the piston 15 upwards. After the electrode 17 separates from the piston 15, it closes the corresponding heating wire 12, reducing heating. When the temperature is low, the piston 15 is pulled downwards by the spring 16, increasing the number of heating wires 12 that are open, increasing the heating speed of the high-pressure gas, ensuring temperature stability, and thus maintaining the temperature of the PVC-O pipe. Stability is ensured to prevent deformation during expansion due to high VC-O tube temperature or breakage due to low VC-O tube temperature, thus guaranteeing the processing quality of the VC-O tube. High-pressure air maintains a certain gap between the VC-O tube and the sliding sleeve 2, allowing for smooth extraction after cooling. When the air pressure is high, the air pressure in the port 9 pushes the slider 21, which presses the button 23 upward. The motor 18 drives the gate 19 upward via the lead screw 20, increasing the opening of the port 9 and thus reducing the air pressure during expansion. When the air pressure is low, the spring 22 pushes the slider 21 downward, which presses the button 24. The motor 18 drives the gate 19 downward via the lead screw 20, closing the opening of the port 9 and thus increasing the air pressure during expansion. This effectively ensures the stability of the air pressure, thereby ensuring the stability of the inner diameter of the expanded VC-O tube.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A PVC-O pipe expansion body mechanism, comprising a support sleeve (1) and a sliding sleeve (2), wherein a connecting assembly is mounted on the support sleeve (1), the connecting assembly comprising a connecting sleeve (3) and a tapered sleeve (5), an air inlet assembly is mounted on the connecting sleeve (3), the air inlet assembly comprising an inlet pipe (4) and a port (9), and an exhaust assembly is mounted on the sliding sleeve (2), the exhaust assembly comprising a support sleeve (10) and an exhaust pipe (11), characterized in that: A heating assembly is installed on the sleeve (3), the heating assembly includes a heating wire (12) and an inner groove (13), a temperature control assembly is installed on the inner groove (13), the temperature control assembly includes a piston (15) and a spring (16), and a pressure control assembly is installed on the support sleeve (10), the pressure control assembly includes a motor (18) and a gate (19).

2. The PVC-O pipe expansion body mechanism according to claim 1, characterized in that: The inlet pipe (4) is installed at one end of the connecting sleeve (3) by bolt sealing, and the other end of the connecting sleeve (3) is installed at one end of the support sleeve (1) by bolt sealing. The other end of the support sleeve (1) is integrally formed at one end of the tapered sleeve (5), and the other end of the tapered sleeve (5) is integrally formed at one end of the sliding sleeve (2).

3. The PVC-O pipe expansion body mechanism according to claim 2, characterized in that: The inlet (9) is respectively opened at the center of the connecting sleeve (3), the support sleeve (1), the conical sleeve (5), the sliding sleeve (2) and the support sleeve (10). The inlet pipe (4) is connected to the outlet pipe (11) through the inlet (9). The outer side of the conical sleeve (5) is provided with a conical groove (6), and the outer side of the sliding sleeve (2) is provided with an annular groove (7). The conical groove (6) is evenly distributed on the conical sleeve (5), and the annular groove (7) is evenly distributed on the sliding sleeve (2). The conical groove (6) and the annular groove (7) are both connected to the inlet (9) through the connecting pipe (8).

4. The PVC-O pipe expansion body mechanism according to claim 1, characterized in that: The heating wire (12) is welded to the inside of the sleeve (3). The heating wire (12) is located inside the opening (9). The inner groove (13) is opened inside the sleeve (3). A heat-conducting plate (14) is welded to the inner wall of the inner groove (13). The heat-conducting plate (14) is sleeved on the outer side of the opening (9).

5. The PVC-O pipe expansion body mechanism according to claim 4, characterized in that: The top of the inner groove (13) is connected to the outer side of the sleeve (3). The outer side of the piston (15) is stuck on the inner wall of the top of the inner groove (13). The bottom of the piston (15) is connected to the heat-conducting plate (14) through a spring (16). An electrode (17) is welded on the inner wall of the inner groove (13). The electrode (17) is sleeved on the outer side of the piston (15). The electrode (17) is connected to the heating wire (12) through an electric wire.

6. The PVC-O pipe expansion body mechanism according to claim 5, characterized in that: One end of the support sleeve (10) is sealed and installed on the other end of the sliding sleeve (2) by bolts. The pipe (11) is sealed and installed on the other end of the support sleeve (10) by bolts. The motor (18) is installed on the top of the support sleeve (10) by bolts. A guide groove is provided on the inner side of the support sleeve (10). The top of the gate plate (19) is stuck on the inner side of the guide groove. The bottom of the gate plate (19) is sealed and clamped on the inner wall of the bottom of the opening (9).

7. The PVC-O pipe expansion body mechanism according to claim 6, characterized in that: A lead screw (20) is welded to the output shaft of the motor (18), and a wire groove is provided on the inner side of the gate plate (19). The bottom end of the lead screw (20) is installed on the inner side of the wire groove by a thread.

8. The PVC-O pipe expansion body mechanism according to claim 7, characterized in that: The inner side of the support sleeve (10) is provided with a sliding groove. The bottom of the sliding groove is connected to the top of the through opening (9). A slider (21) is stuck on the inner wall of the bottom of the sliding groove. The top of the slider (21) is connected to the inner wall of the top of the sliding groove through a spring (22). A button (23) and a button (24) are welded on the inner wall of the sliding groove. The button (23) and the button (24) are connected to the motor (18) through wires. The button (23) and the button (24) are located on the top and inner side of the slider (21), respectively.

Images