Water conveying integrated type single-point needle valve hot runner device

Abstract

The utility model particularly relates to a water delivery integrated type single-point needle valve hot runner device which comprises a driving device, a main nozzle assembly arranged in the driving device and a hot nozzle assembly arranged at one end of the driving device, the driving device, the main nozzle assembly and the hot nozzle assembly are coaxially arranged, a cross runner is arranged in the main nozzle assembly, and the cross runner is arranged in the hot nozzle assembly. A main runner communicated with the cross runner is arranged in the hot nozzle assembly, a valve needle is arranged in the main runner, the output end of the driving device is connected with the valve needle, the end, away from the driving device, of the valve needle penetrates through the main runner, and the driving device is used for driving the valve needle to move in the axial direction of the hot nozzle assembly. And a water conveying module for conveying cooling water is arranged between the driving device and the main nozzle assembly. The single-point needle valve hot runner device is simple in structure and good in sealing performance, and is provided with the water conveying module for conveying cooling water, so that the temperature in the cylinder body can be reduced, and the service life of a sealing element in the driving device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of single-point needle valve hot runner devices, in particular to a water transport integrated single-point needle valve hot runner device. Background Art

[0002] The single-point needle valve hot runner device is a one-in-one-out structure, which controls the opening and closing of the needle valve through the transmission device, thereby realizing the opening and closing of the gate for injection molding. However, since a heating device is required in the device to keep the rubber in the runner in a molten state, the sealing components in the drive device are prone to aging, resulting in air and liquid leakage, so the device needs to be maintained frequently, but frequent maintenance also has a great impact on the injection molding production efficiency. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide a water transport integrated single-point needle valve hot runner device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A water transport integrated single-point needle valve hot runner device, comprising a driving device, a main nozzle assembly arranged in the driving device, and a hot nozzle assembly arranged at one end of the driving device, the driving device, the main nozzle assembly and the hot nozzle assembly are coaxially arranged, a cross flow channel is arranged in the main nozzle assembly, a main flow channel connected to the cross flow channel is arranged in the hot nozzle assembly, a valve needle is arranged in the main flow channel, the output end of the driving device is connected to the valve needle, and the end of the valve needle away from the driving device is penetrated in the main flow channel, the driving device is used to drive the valve needle to move axially along the hot nozzle assembly, and a water transport module for conveying cooling water is arranged between the driving device and the main nozzle assembly.

[0006] Furthermore, the driving device includes a cylinder body, a cylinder cover arranged at the upper end of the cylinder body, a piston slidably arranged in the cylinder body and a base arranged at the lower end of the cylinder body, and one end of the valve needle is connected to the piston.

[0007] Furthermore, a first sealing ring is sleeved on the cylinder cover, and a first accommodating cavity for accommodating the first sealing ring is concavely formed on the outer circumference of the cylinder cover.

[0008] Furthermore, a second sealing ring and a third sealing ring are provided at one end of the piston close to the cylinder head, the second sealing ring is provided on the inner side of the piston, and the third sealing ring is provided on the outer side of the piston; a fourth sealing ring is provided at one end of the piston close to the hot nozzle assembly, and the fourth sealing ring is provided on the outer side of the piston.

[0009] Furthermore, the main nozzle assembly includes a first main nozzle and a second main nozzle which are sequentially arranged in the cylinder body from top to bottom, an injection nozzle is arranged at the top of the first main nozzle, and the cross flow channel includes a first cross flow channel arranged in the first main nozzle and a second cross flow channel arranged in the second main nozzle, the inlet end of the first cross flow channel is connected to the injection nozzle, the outlet end of the first cross flow channel is connected to the second cross flow channel, and the outlet end of the second cross flow channel is connected to the main flow channel.

[0010] Furthermore, the main nozzle assembly also includes a first heating device, which is used to heat the first main nozzle and the second main nozzle, and the first heating device is sleeved on the first main nozzle and the second main nozzle.

[0011] Furthermore, the hot nozzle assembly includes a hot nozzle body and a second heating device arranged on the hot nozzle body, the second heating device is used to heat the hot nozzle body, the upper end of the hot nozzle body is connected to the main nozzle assembly, and the main channel is arranged in the middle of the hot nozzle body.

[0012] Furthermore, the hot nozzle assembly also includes a nozzle tip and a gate, the nozzle tip is embedded in the hot nozzle body and close to the outlet end of the main channel, and the gate is arranged at the bottom end of the hot nozzle body.

[0013] Furthermore, the water transport module includes a water inlet pipe, a water outlet pipe and a first cooling water pipe for connecting the water inlet pipe and the water outlet pipe, and the water inlet pipe and the water outlet pipe both protrude from the lower end of the cylinder head.

[0014] Furthermore, the first cooling water pipe is provided with a plurality of second cooling water pipes along the outer circumference of the main nozzle assembly, and the second cooling water pipes are arranged parallel to the axial direction of the main nozzle assembly.

[0015] The beneficial effect of the utility model is that the utility model discloses a water transport integrated single-point needle valve hot runner device, which has a simple structure and good sealing performance, and is provided with a water transport module for conveying cooling water, which can reduce the temperature in the cylinder body and increase the service life of the sealing elements in the driving device. At the same time, no external pipeline is required, thereby improving the overall aesthetics of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the utility model for removing the cylinder body;

[0018] Figure 3 It is a cross-sectional view of the utility model.

[0019] Figure 4 It is another cross-sectional view of the utility model.

[0020] The accompanying drawings are marked as follows: 1. driving device; 11. cylinder body; 12. cylinder head; 13. piston; 14. base; 121. first sealing ring; 131. second sealing ring; 132. third sealing ring; 133. fourth sealing ring; 134. crossbeam; 2. main nozzle assembly; 21. first main nozzle; 22. second main nozzle; 23. injection nozzle; 24. first cross flow channel; 25. second cross flow channel; 3. hot nozzle assembly; 31. main flow channel; 32. hot nozzle body; 33. nozzle tip; 34. gate; 4. valve needle; 5. water transport module; 51. water inlet pipe; 52. water outlet pipe; 53. first cooling water pipe; 54. second cooling water pipe; 6. first heating device; 7. second heating device. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0022] Example 1

[0023] like Figure 1-4 As shown, this embodiment provides a water transport integrated single-point needle valve hot runner device, including a driving device 1, a main nozzle assembly 2 arranged in the driving device 1, and a hot nozzle assembly 3 arranged at one end of the driving device 1, the driving device 1, the main nozzle assembly 2 and the hot nozzle assembly 3 are coaxially arranged, the main nozzle assembly 2 is provided with a cross flow channel, the hot nozzle assembly 3 is provided with a main flow channel 31 connected to the cross flow channel, the output end of the driving device 1 is connected to the valve needle 4, and the end of the valve needle 4 away from the driving device 1 is penetrated by the main flow channel 31, the driving device 1 is used to drive the valve needle 4 to move axially along the hot nozzle assembly 3, and a water transport module 5 for conveying cooling water is provided between the driving device 1 and the main nozzle assembly 2.

[0024] The single-point needle valve hot runner device described in the utility model has a simple structure and good sealing performance, and is provided with a water transport module 5 for transporting cooling water, which can reduce the temperature inside the cylinder body 11 and increase the service life of the sealing element in the drive device 1. At the same time, no external pipeline is required, thereby improving the overall aesthetics of the device.

[0025] Furthermore, the driving device 1 includes a cylinder body 11 , a cylinder cover 12 disposed at the upper end of the cylinder body 11 , a piston 13 slidably disposed in the cylinder body 11 , and a base 14 disposed at the lower end of the cylinder body 11 , and one end of the valve needle 4 is connected to the piston 13 .

[0026] Furthermore, a first sealing ring 121 is sleeved on the cylinder cover 12 , and a first accommodating cavity for accommodating the first sealing ring 121 is concavely formed on the outer periphery of the cylinder cover 12 .

[0027] Furthermore, the piston 13 is provided with a second sealing ring 131 and a third sealing ring 132 at one end close to the cylinder head 12, wherein the second sealing ring 131 is provided on the inner side of the piston 13, and the third sealing ring 132 is provided on the outer side of the piston 13; the piston 13 is provided with a fourth sealing ring 133 at one end close to the hot nozzle assembly 3, and the fourth sealing ring 133 is provided on the outer side of the piston 13. The sealing property in the cylinder body 11 is ensured by the provision of the second sealing ring 131, the third sealing ring 132 and the fourth sealing ring 133.

[0028] Specifically, a sealed movable cavity is provided between the cylinder body 11 and the cylinder head 12 for the piston 13 to reciprocate along the axial direction of the cylinder body 11, a cross beam 134 is provided in the piston 13, and the upper end of the valve needle 4 is connected to the cross beam 134. That is, the piston 13 reciprocates along the axial direction of the cylinder body 11 to drive the valve needle 4 to move up and down, thereby controlling the flow or stagnation of the rubber material.

[0029] Further, the main nozzle assembly 2 includes a first main nozzle 21 and a second main nozzle 22 which are sequentially arranged in the cylinder body 11 from top to bottom, an injection nozzle 23 is arranged at the top of the first main nozzle 21, and the cross flow channel includes a first cross flow channel 24 arranged in the first main nozzle 21 and a second cross flow channel 25 arranged in the second main nozzle 22, the inlet end of the first cross flow channel 24 is connected to the injection nozzle 23, the outlet end of the first cross flow channel 24 is connected to the second cross flow channel 25, and the outlet end of the second cross flow channel 25 is connected to the main flow channel 31. Specifically, the upper end of the first main nozzle 21 is embedded in the cylinder head 12, and the lower end of the first main nozzle 21 is connected to the second main nozzle 22.

[0030] Furthermore, the main nozzle assembly 2 further includes a first heating device 6, which is used to heat the first main nozzle 21 and the second main nozzle 22, and the first heating device 6 is sleeved on the first main nozzle 21 and the second main nozzle 22. Specifically, the first heating device 6 is used to heat the first main nozzle 21 and the second main nozzle 22, improve the temperature uniformity of the first main nozzle 21 and the second main nozzle 22, and thus ensure the smooth flow of the rubber in the first cross flow channel 24 and the second cross flow channel 25.

[0031] Furthermore, the hot nozzle assembly 3 includes a hot nozzle body 32 and a second heating device 7 disposed on the hot nozzle body 32, the second heating device 7 is used to heat the hot nozzle body 32, the upper end of the hot nozzle body 32 is connected to the main nozzle assembly 2, and the main flow channel 31 is disposed in the middle of the hot nozzle body 32. Specifically, the lower end of the second main nozzle 22 body protrudes out of the cylinder 11 and is connected to the upper end of the hot nozzle body 32. The second heating device is used to heat the hot nozzle body 32, improve the temperature uniformity of the hot nozzle body 32, and thereby ensure the smooth flow of the rubber in the main flow channel 31.

[0032] Furthermore, the hot nozzle assembly 3 further includes a nozzle tip 33 and a gate 34. The nozzle tip 33 is embedded in the hot nozzle body 32 and close to the outlet end of the main channel 31. The gate 34 is arranged at the bottom end of the hot nozzle body. The nozzle tip 33 is used to position the lower end of the valve needle 4 to improve the movement stability of the valve needle 4.

[0033] Furthermore, the water transport module 5 includes an inlet pipe 51, an outlet pipe 52, and a first cooling water pipe 53 for connecting the inlet pipe 51 and the outlet pipe 52. The inlet pipe 51 and the outlet pipe 52 both protrude from the lower end of the cylinder head 12. The first cooling water pipe 53 is provided with a plurality of second cooling water pipes 54 along the outer periphery of the main nozzle assembly 2. The second cooling water pipe 54 is provided parallel to the axial direction of the main nozzle assembly 2. Specifically, the inlet pipe 51 of the water transport module 5 is connected to the cooling water inlet, and the cooling water is discharged from the outlet pipe 52 through the first cooling water pipe 53 and the second cooling water pipe 54, thereby ensuring the normal circulation of the cooling water inside the device to achieve the cooling effect, and at the same time, the service life of the sealing elements (i.e., the first sealing ring 121, the second sealing ring 131, the third sealing ring 132 and the fourth sealing ring 133) inside the device is improved, so that they are not easily aged by heat.

[0034] The working process of the water-transport integrated single-point needle valve hot runner device of the utility model is as follows: when the device is working, the rubber material is provided by an external injection molding machine, the gun nozzle of the injection molding machine is connected with the injection nozzle 23 on the first main nozzle 21, and then converges to the main flow channel 31 of the hot nozzle body 32 through the first cross flow channel 24 and the second cross flow channel 25, and then enters the nozzle tip 33 and the gate 34, wherein the opening or closing of the gate at the lower end of the main flow channel 31 is controlled by controlling the opening and closing of the valve needle 4, so that the device is in an injection molding or stop state. According to the specific orientation of this embodiment, when the valve needle 4 moves upward along the axial direction of the main nozzle assembly 2 with the piston 13, the gate at the lower end of the main channel 31 is opened. At this time, the rubber flows out from the main channel 31 through the nozzle tip 33 and the gate 34, and the device is in an injection molding state; conversely, when the valve needle 4 moves downward along the axial direction of the main nozzle assembly 2 with the piston 13, the gate at the lower end of the main channel 31 is closed. At this time, the rubber stagnates in the main channel 31, and the device is in a closed state.

[0035] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. A water transport integrated single-point needle valve hot runner device, characterized in that: The invention comprises a driving device, a main nozzle assembly arranged in the driving device, and a hot nozzle assembly arranged at one end of the driving device, wherein the driving device, the main nozzle assembly and the hot nozzle assembly are coaxially arranged, a cross flow channel is arranged in the main nozzle assembly, a main flow channel connected to the cross flow channel is arranged in the hot nozzle assembly, a valve needle is connected to the output end of the driving device, and the end of the valve needle away from the driving device is penetrated in the main flow channel, the driving device is used for driving the valve needle to move axially along the hot nozzle assembly, and a water transport module for transporting cooling water is arranged between the driving device and the main nozzle assembly.

2. The water transport integrated single-point needle valve hot runner device according to claim 1, characterized in that: The driving device comprises a cylinder body, a cylinder cover arranged at the upper end of the cylinder body, a piston slidably arranged in the cylinder body and a base arranged at the lower end of the cylinder body, and one end of the valve needle is connected to the piston.

3. The water transport integrated single-point needle valve hot runner device according to claim 2, characterized in that: A first sealing ring is sleeved on the cylinder cover, and a first accommodating cavity for accommodating the first sealing ring is concavely formed on the outer circumference of the cylinder cover.

4. The water transport integrated single-point needle valve hot runner device according to claim 2, characterized in that: A second sealing ring and a third sealing ring are arranged at one end of the piston close to the cylinder head, the second sealing ring is arranged on the inner side of the piston, and the third sealing ring is arranged on the outer side of the piston; a fourth sealing ring is arranged at one end of the piston close to the hot nozzle assembly, and the fourth sealing ring is arranged on the outer side of the piston.

5. The water transport integrated single-point needle valve hot runner device according to claim 1, characterized in that: The main nozzle assembly includes a first main nozzle and a second main nozzle which are sequentially arranged in the cylinder body from top to bottom, an injection nozzle is arranged at the top of the first main nozzle, and the cross flow channel includes a first cross flow channel arranged in the first main nozzle and a second cross flow channel arranged in the second main nozzle, the inlet end of the first cross flow channel is connected to the injection nozzle, the outlet end of the first cross flow channel is connected to the second cross flow channel, and the outlet end of the second cross flow channel is connected to the main flow channel.

6. The water transport integrated single-point needle valve hot runner device according to claim 5, characterized in that: The main nozzle assembly further includes a first heating device, which is used to heat the first main nozzle and the second main nozzle, and the first heating device is sleeved on the first main nozzle and the second main nozzle.

7. The water transport integrated single-point needle valve hot runner device according to claim 1, characterized in that: The hot nozzle assembly includes a hot nozzle body and a second heating device arranged on the hot nozzle body, the second heating device is used to heat the hot nozzle body, the upper end of the hot nozzle body is connected to the main nozzle assembly, and the main flow channel is arranged in the middle of the hot nozzle body.

8. The water transport integrated single-point needle valve hot runner device according to claim 7, characterized in that: The hot nozzle assembly also includes a nozzle tip and a gate. The nozzle tip is embedded in the hot nozzle body and close to the outlet end of the main channel. The gate is arranged at the bottom end of the hot nozzle body.

9. The water transport integrated single-point needle valve hot runner device according to claim 1, characterized in that: The water transport module comprises a water inlet pipe, a water outlet pipe and a first cooling water pipe for connecting the water inlet pipe and the water outlet pipe. The water inlet pipe and the water outlet pipe both protrude out of the lower end of the cylinder cover.

10. The water transport integrated single-point needle valve hot runner device according to claim 9, characterized in that: The first cooling water pipe is provided with a plurality of second cooling water pipes along the outer periphery of the main nozzle assembly, and the second cooling water pipes are provided parallel to the axial direction of the main nozzle assembly.

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