Liquid supply system for an injection molding machine

Abstract

The utility model discloses a liquid supply system of injection molding machine, including sleeve and core seat, sleeve is used for with carousel fixed, sleeve is covered in the rotation connection with its outside core seat, and the core seat is opened with liquid inlet channel and liquid return channel, and the sleeve is opened with first ring groove and second ring groove, and the first ring groove is linked together with liquid inlet channel, and the second ring groove is linked together with liquid return channel, and the sleeve is opened with the liquid outlet that communicates with first ring groove and the liquid return that communicates with second ring groove, and the liquid outlet and liquid return are connected with the connecting pipe, and the connecting pipe has the connecting port for being connected with injection mold, and the cooling liquid is communicated to injection mold through liquid inlet channel, first ring groove connecting pipe cooling, and the cooling liquid is returned to liquid return channel through second ring groove, and the sleeve rotates with the forming mould on carousel and does not affect the circulation of cooling liquid during, and all the connecting pipe for communicating is more neat and does not easily occur winding phenomenon because carousel rotates, and effectively improves the problem of pipeline winding and disorderly.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machines, and in particular to a liquid supply system for an injection molding machine. Background Technology

[0002] Injection molding machines are the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. They are widely used in many fields such as automobiles, electronics, home appliances, medical devices, and daily necessities.

[0003] Injection molds are crucial components of injection molding machines used to mold products. Currently, to improve injection efficiency, multi-station injection molding machines are generally used. This involves installing multiple injection molds on a turntable, and switching between each mold and injection head via the turntable to achieve injection. In practical use, injection molds require cooling, leading to the connection of cooling pipes. This results in a large number of cooling pipes on the entire injection molding machine. Furthermore, as the turntable rotates the injection molds, the cooling pipes become not only messy but also prone to tangling, requiring further improvement. Utility Model Content

[0004] To further improve the problems of tangled and messy pipelines, this application provides a liquid supply system for an injection molding machine.

[0005] This application provides a liquid supply system for an injection molding machine, which adopts the following technical solution: A liquid supply system for an injection molding machine includes a rotating sleeve and a core seat. The rotating sleeve is fixed to a turntable and rotatably connected to the core seat. The core seat has an inlet channel and a return channel. The rotating sleeve has a first annular groove and a second annular groove. The first annular groove communicates with the inlet channel, and the second annular groove communicates with the return channel. The rotating sleeve has an outlet communicating with the first annular groove and a return port communicating with the second annular groove. Connecting pipes are connected to the outlet and the return port, and the connecting pipes have connection ports for connecting to the injection mold.

[0006] Optionally, the connecting pipe includes a first ring pipe and a second ring pipe, the liquid outlet is connected to the first ring pipe, the liquid return port is connected to the second ring pipe, the connecting port is opened on the first ring pipe and the second ring pipe, and multiple sets of connecting ports are distributed around the circumference and correspond to the position of the injection mold.

[0007] Optionally, a sealing ring is provided between the rotating sleeve and the core seat, and multiple sealing rings are provided at intervals. The sealing rings are located on the upper and lower sides of the first annular groove and the second annular groove.

[0008] Optionally, the first annular groove is located above the second annular groove.

[0009] Optionally, the rotating sleeve is provided with a third annular groove, which is located above the second annular groove, and the core seat is provided with a drainage channel communicating with the third annular groove.

[0010] Optionally, the core seat includes an upper seat and a lower seat. The liquid inlet channel and the liquid return channel are provided on the upper seat. The lower seat is provided with an oil inlet channel and an oil return channel. A lower sleeve is connected to the rotating sleeve and sleeved outside the lower seat. The lower sleeve is provided with a first oil groove and a second oil groove in an annular shape. The outer wall of the lower sleeve is provided with an oil outlet communicating with the first oil groove and an oil return port communicating with the second oil groove.

[0011] Optionally, a sealing ring is provided between the lower sleeve and the lower seat, and multiple sealing rings are distributed along the axial direction of the lower sleeve. An annular third oil groove is provided on the inner wall of the lower sleeve, and an oil drain pipe communicating with the third oil groove is provided on the lower seat.

[0012] Optionally, the first oil groove is located above the second oil groove, the second oil groove is located above the third oil groove, and the upper and lower ends of the lower sleeve are provided with a first bearing at the connection between the lower sleeve and the lower seat.

[0013] Optionally, a connecting seat is provided between the rotating sleeve and the lower sleeve to connect the two, and a guide seat is provided at the connection between the upper seat and the connecting seat. There is a gap between the guide seat and the bottom of the rotating sleeve to form a discharge channel, and the bottom of the rotating sleeve has a discharge port that communicates with the discharge channel.

[0014] Optionally, the liquid inlet channel and the liquid return channel are arranged vertically upwards, and the oil inlet channel and the oil return channel are arranged vertically downwards.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. Coolant enters the first annular groove through the inlet channel, and then is connected to the injection mold through the connecting pipe for cooling. After flowing through the injection mold, the coolant flows back to the return channel through the second annular groove to achieve return. During this process, the rotating sleeve can rotate with the molding mold on the turntable without affecting the flow of coolant, realizing unified inlet and outlet of coolant. In addition, all the connecting pipes used for connection are relatively neat and are not easy to get tangled due to the rotation of the turntable, effectively improving the problems of pipe tangling and mess. 2. The oil inlet and return channels are integrated into the lower part of the core seat in the same way. The oil outlet and return port can supply oil to the hydraulic cylinders on the injection mold for opening and closing. Even with the lower sleeve, rotating sleeve and turntable rotating synchronously, the oil supply will not be affected. This also makes the oil pipes neat and not easy to get messy or entangled due to the rotation of the turntable. 3. The liquid inlet channel, liquid return channel, oil inlet channel and oil return channel are all integrated into the core seat. The overall structure is more compact and has better integration, realizing centralized liquid supply and return. 4. With the design of drainage channels, outlets, and oil drain pipes, any accidental leaks of coolant or oil can be drained, preventing coolant and oil from leaking out. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the embodiment of this application installed on a turntable.

[0017] Figure 2 This is a cross-sectional view of the liquid inlet channel in an embodiment of this application.

[0018] Figure 3 This is a cross-sectional view of the drainage channel in an embodiment of this application.

[0019] Figure 4 This is a cross-sectional view of the outlet of an embodiment of this application.

[0020] Figure 5 This is a structural diagram showing the connection between the device and the injection mold when used in the embodiments of this application.

[0021] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0022] Explanation of reference numerals in the attached figures: 1. Rotating sleeve; 2. Core seat; 3. Turntable; 4. Injection mold; 5. Liquid inlet channel; 6. Liquid return channel; 7. First annular groove; 8. Second annular groove; 9. Liquid outlet; 10. Liquid return port; 11. First annular pipe; 12. Second annular pipe; 13. First pipe; 14. Second pipe; 15. First connection port; 16. Second connection port; 17. Sealing ring; 18. Third annular groove; 19. Drainage channel; 20. Liquid inlet pipe; 1. Return pipe; 22. Control box; 23. Upper seat; 24. Lower seat; 25. Oil inlet channel; 26. Oil return channel; 27. Lower sleeve; 28. First oil tank; 29. ​​Second oil tank; 30. Oil outlet; 31. Oil return port; 32. Hydraulic cylinder; 33. Sealing ring; 34. Third oil tank; 35. Oil drain pipe; 36. First bearing; 37. Connecting seat; 38. Guide seat; 39. Discharge channel; 40. Discharge port. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0024] A liquid supply system for an injection molding machine, such as Figure 1 and Figure 2As shown, the device includes a rotating sleeve 1 and a core seat 2. The rotating sleeve 1 is fixedly connected to a turntable 3 and rotates accordingly. The outer circumference of the turntable 3 is used to install multiple injection molds 4. The rotating sleeve 1 is fitted over and adapted to the core seat 2. The rotating sleeve 1 is rotatably connected to the core seat 2. A liquid inlet channel 5 and a liquid return channel 6 are vertically opened on the top of the core seat 2. The liquid inlet channel 5 and the liquid return channel 6 are parallel and used to supply coolant flow. At the same time, a first annular groove 7 and a second annular groove 8 are opened on the inner wall of the rotating sleeve 1. The first annular groove 7 and the second annular groove 8 are distributed vertically at intervals. The first annular groove 7 is connected to the liquid inlet channel 5, and the second annular groove 8 is connected to the liquid return channel 6. In addition, a liquid outlet 9 and a liquid return port 10 are opened on the outer wall of the rotating sleeve 1. The liquid outlet 9 and the liquid return port 10 are arranged opposite each other on the symmetrical sides of the rotating sleeve 1. The liquid outlet 9 is connected to the first annular groove 7, and the liquid return port 10 is connected to the second annular groove 8.

[0025] like Figure 1 and Figure 5 As shown, connecting pipes are connected to the liquid outlet 9 and the liquid return port 10. The connecting pipes are used to communicate with the cooling channels on the injection mold 4. The connecting pipes include a first ring pipe 11 and a second ring pipe 12. The first ring pipe 11 and the second ring pipe 12 are distributed vertically, with the first ring pipe 11 being higher than the second ring pipe 12. The liquid outlet 9 is connected to the first ring pipe 11 via a first pipe 13, and the liquid return port 10 is connected to the second ring pipe 12 via a second pipe 14. Connecting ports are provided at each injection mold 4 corresponding to the first ring pipe 11 and the second pipe 14. The connecting ports are used to communicate with the cooling channels on the injection mold 4. The connecting ports include a first connecting port 15 and a second connecting port 16. The first connecting port 15 is located on the first ring pipe 11 and is used to connect to the inlet of the cooling channel on the injection mold 4. The second connecting port 16 is located on the second ring pipe 12 and is used to connect to the outlet of the cooling channel on the injection mold 4.

[0026] In this way, the coolant enters through the inlet channel 5 and flows into the first annular groove 7, then exits through the outlet 9 and is connected to the injection mold 4 via a connecting pipe for cooling. After flowing through the injection mold 4, the coolant flows back to the return port 10 via the connecting pipe, and finally passes through the second annular groove 8 and the return channel 6 to achieve coolant return, thus realizing the circulation of coolant and providing a good cooling effect for the injection mold 4 on the turntable 3. During this process, the rotating sleeve 1 can rotate with the molding mold on the turntable 3 without affecting the flow of coolant, realizing unified coolant inlet and return. In addition, all the connecting pipes used for connection are relatively neat and are not prone to entanglement due to the rotation of the turntable 3, effectively improving the problems of pipe entanglement and messiness. Furthermore, the inlet and return of coolant are integrated on the core seat 2, making the overall structure more compact and integrated, realizing centralized supply and return of coolant.

[0027] like Figure 1 and Figure 2As shown, a sealing ring 17 is provided between the rotating sleeve 1 and the core seat 2. Multiple sealing rings 17 are vertically spaced and located on the upper and lower sides of the first annular groove 7 and the second annular groove 8, respectively. The sealing ring 17 can improve the sealing performance at the connection between the rotating sleeve 1 and the core seat 2 and prevent coolant leakage during use.

[0028] like Figure 2 and Figure 4 As shown, a third annular groove 18 is also provided on the inner wall of the rotating sleeve 1. The third annular groove 18 is located above the first annular groove 7, and the first annular groove 7 is located above the second annular groove 8. A drain channel 19 communicating with the third annular groove 18 is vertically provided on the core seat 2. The drain channel 19 is vertically upward. Due to the large pressure of the medium when liquid enters, when there is actual medium leaking upward, it will flow into the third annular groove 18 and finally be discharged through the drain channel 19, thereby effectively preventing the coolant from leaking out from the connection between the top of the rotating sleeve 1 and the core seat 2.

[0029] like Figure 1 and Figure 2 As shown, an inlet pipe 20 is provided on the inlet channel 5 and connected to it, and a return pipe 21 is provided on the return channel 6 and connected to it. Both the inlet pipe 20 and the return pipe 21 are vertically arranged and threadedly connected to the core seat 2. A control box 22 is provided on the top of the core seat 2. The control components on the injection molding machine can be integrated into the control box 22. A slip ring is provided in the control box 22. With the help of the slip ring design, the conductivity and signal transmission will not be affected when the control box 22 rotates with the turntable 3. The inlet pipe 20 and the return pipe 21 pass through the center of the slip ring of the control box 22.

[0030] like Figure 1 , Figure 2 and Figure 5As shown, the core seat 2 includes an upper seat 23 and a lower seat 24, which are fixed together by screws. The aforementioned liquid inlet channel 5 and liquid return channel 6 are provided on the upper seat 23. Additionally, the lower seat 24 is provided with an oil inlet channel 25 and an oil return channel 26, both vertically oriented. The bottom of the rotating sleeve 1 is provided with a lower sleeve 27, which is fixedly connected to it. The lower sleeve 27 is fixedly connected to the turntable 3 and rotates synchronously with it. The lower sleeve 27 is fitted onto the outside of the lower seat 24 and rotatably connected to it. A first oil groove 28 and a second oil groove 29 are provided inside the lower sleeve 27. The oil grooves 29 are all annular and distributed sequentially along the axial direction of the lower sleeve 27. At the same time, an oil outlet 30 and an oil return port 31 are provided on the outside of the lower sleeve 27. The oil outlet 30 is connected to the first oil groove 28, and the oil return port 31 is connected to the second oil groove 29. There are multiple oil outlets 30 and oil return ports 31 evenly distributed around the circumference. The oil outlets 30 and oil return ports 31 are distributed vertically to form a group of oil ports. A group of oil ports corresponds to an injection mold 4 on the turntable 3. In actual use, the oil outlets 30 and oil return ports 31 are connected to the hydraulic cylinder 32 on the injection mold 4 that drives it to open and close. The opening and closing of the injection mold 4 are realized by supplying oil to the hydraulic cylinder 32.

[0031] This oil supply method also prevents all the oil pipes from becoming messy, and the oil pipes will not become tangled as the turntable 3 rotates. When the turntable 3 rotates, the lower sleeve 27 rotates synchronously. During this time, the oil outlet 30 and the oil return port 31 always maintain an oil supply state, ultimately achieving good oil supply to the hydraulic cylinder 32 on the injection mold 4. In addition, the oil inlet channel 25 and the oil return channel 26 are also integrated on the core seat 2, which improves integration and makes the overall structure simpler and more compact, facilitating centralized oil supply and return.

[0032] like Figure 2 As shown, the first oil groove 28 is located above the second oil groove 29. A sealing ring 33 is provided between the lower sleeve 27 and the lower seat 24. Multiple sealing rings 33 are distributed along the axial direction of the lower sleeve 27. The sealing rings 33 are located on the upper and lower sides of the first oil groove 28 and the second oil groove 29, respectively. This can achieve multiple seals at the connection between the lower sleeve 27 and the lower seat 24, effectively preventing oil leakage at the connection in actual use.

[0033] like Figure 2 and Figure 3 As shown, a third oil groove 34 is also provided on the inner wall of the outer casing. The third oil groove 34 is also annular and is located below the second oil groove 29. At the same time, an oil drain pipe 35 connected to the third oil groove 34 is provided on the lower seat 24. The oil drain pipe 35 is set vertically downward. In this way, even if some sealing rings 33 have problems and cause some oil to leak down the connection, the oil can be discharged through the oil drain pipe 35 after entering the third oil groove 34, thus avoiding further downward flow of oil and leakage.

[0034] like Figure 3 , Figure 4 and Figure 6 As shown, first bearings 36 are provided at the connection points between the lower sleeve 27 and the lower base 24 at both ends. The first bearings 36 improve the smoothness of the rotation of the lower sleeve 27 and effectively reduce the frictional resistance during rotation. A connecting seat 37 is provided between the lower sleeve 27 and the rotating sleeve 1 to connect the two. The connecting seat 37 is fixed to the lower sleeve 27 and the rotating sleeve 1 by screws. A guide seat 38 is provided on the connecting seat 37. The connecting seat 37 covers the top of the first bearing 36, which can effectively prevent coolant from accidentally leaking into the first bearing 36 and causing damage. There is a gap between the connecting seat 37 and the bottom of the rotating sleeve 1 to form a discharge channel 39. A discharge port 40 communicating with the discharge channel 39 is opened on the bottom side wall of the rotating sleeve 1. Multiple discharge ports 40 are evenly distributed around the circumference. The design of the discharge ports 40 can discharge any accidentally leaked coolant and prevent it from seeping into the first bearing 36 below.

[0035] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A liquid supply system for an injection molding machine, characterized in that: The device includes a rotating sleeve (1) and a core seat (2). The rotating sleeve (1) is used to fix the rotating disk (3). The rotating sleeve (1) is sleeved on the core seat (2) and rotatably connected to it. The core seat (2) is provided with an inlet channel (5) and a return channel (6). The rotating sleeve (1) is provided with a first annular groove (7) and a second annular groove (8). The first annular groove (7) is connected to the inlet channel (5), and the second annular groove (8) is connected to the return channel (6). The rotating sleeve (1) is provided with an outlet (9) connected to the first annular groove (7) and a return port (10) connected to the second annular groove (8). The outlet (9) and the return port (10) are connected to a connecting pipe. The connecting pipe has a connecting port for connecting to the injection mold (4).

2. The liquid supply system for an injection molding machine according to claim 1, characterized in that: The connecting pipe includes a first ring pipe (11) and a second ring pipe (12). The liquid outlet (9) is connected to the first ring pipe (11), and the liquid return port (10) is connected to the second ring pipe (12). The connecting ports are opened on the first ring pipe (11) and the second ring pipe (12). The connecting ports are distributed in multiple sets around the circumference and correspond to the position of the injection mold (4).

3. The liquid supply system for an injection molding machine according to claim 2, characterized in that: A sealing ring (17) is provided between the rotating sleeve (1) and the core seat (2). Multiple sealing rings (17) are provided at intervals. The sealing rings (17) are located on the upper and lower sides of the first annular groove (7) and the second annular groove (8).

4. A liquid supply system for an injection molding machine according to claim 1 or 3, characterized in that: The first annular groove (7) is located above the second annular groove (8).

5. The liquid supply system for an injection molding machine according to claim 4, characterized in that: The rotating sleeve (1) is provided with a third annular groove (18), which is located above the second annular groove (8). The core seat (2) is provided with a drain channel (19) that communicates with the third annular groove (18).

6. The liquid supply system for an injection molding machine according to claim 1, characterized in that: The core seat (2) includes an upper seat (23) and a lower seat (24). The liquid inlet channel (5) and the liquid return channel (6) are provided on the upper seat (23). The lower seat (24) is provided with an oil inlet channel (25) and an oil return channel (26). The rotating sleeve (1) is connected to a lower sleeve (27) sleeved outside the lower seat (24). The lower sleeve (27) is provided with a first oil groove (28) and a second oil groove (29) in an annular shape. The outer wall of the lower sleeve (27) is provided with an oil outlet (30) communicating with the first oil groove (28) and an oil return port (31) communicating with the second oil groove (29).

7. The liquid supply system for an injection molding machine according to claim 6, characterized in that: A sealing ring (33) is provided between the lower sleeve (27) and the lower seat (24). Multiple sealing rings (33) are distributed along the axial direction of the lower sleeve (27). An annular third oil groove (34) is provided on the inner wall of the lower sleeve (27). An oil drain pipe (35) communicating with the third oil groove (34) is provided on the lower seat (24).

8. The liquid supply system for an injection molding machine according to claim 7, characterized in that: The first oil groove (28) is located above the second oil groove (29), the second oil groove (29) is located above the third oil groove (34), and the upper and lower ends of the lower sleeve (27) are provided with a first bearing (36) at the connection between the lower sleeve (27) and the lower seat (24).

9. A liquid supply system for an injection molding machine according to claim 6 or 8, characterized in that: A connecting seat (37) is provided between the rotating sleeve (1) and the lower sleeve (27) to connect the two. A guide seat (38) is provided at the connection between the upper seat (23) and the connecting seat (37). There is a gap between the guide seat (38) and the bottom of the rotating sleeve (1) to form a discharge channel (39). The bottom of the rotating sleeve (1) is provided with a discharge port (40) that communicates with the discharge channel (19).

10. The liquid supply system for an injection molding machine according to claim 6, characterized in that: The liquid inlet channel (5) and liquid return channel (6) are arranged vertically upwards, and the oil inlet channel (25) and oil return channel (26) are arranged vertically downwards.

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