A type of rotating core cooling joint

Abstract

This invention provides a rotary core cooling connector, comprising: a connector body with a first blind hole, a connecting hole, and a second blind hole inside; two quick-connect water pipe connectors; a base detachably mounted on the connector body and sealing the opening of the second blind hole; a first channel and a second channel connected inside the base; threads and annular grooves on the outer wall of the upper vertical section of the connecting rod; the lower vertical section of the connecting rod located within the first blind hole; a through hole inside the connecting rod; a rotary sealing assembly including an oil seal, multiple bearings, multiple ball plungers, and a bearing pressure block; and one end of a nozzle passing sequentially through the through hole, the first blind hole, and the first channel before connecting to the second channel. This invention, by using an externally connected threaded core, avoids direct contact between the rotary sealing parts and the threaded core, thus preventing frequent replacements and increased production costs caused by direct contact between the threaded core and the rotary sealing parts.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and specifically to a cooling joint for rotating cores. Background Technology

[0002] Injection molds often require the creation of threaded cores to achieve the threaded features required in plastic products. During demolding, these threaded cores need to move not only circumferentially but also axially. Under these conditions, creating a suitable central cooling system within the injection mold becomes extremely difficult, primarily due to the following reasons:

[0003] 1. The threaded core that makes circular motion cannot be directly connected to the water pipe outside the mold.

[0004] 2. When a rotary sealing ring is installed in the mold to achieve a seal between the threaded core and the template, it can only achieve a seal during the circumferential motion between the two, but cannot achieve a seal during the axial motion between the two.

[0005] 3. After long-term use, threaded cores and rotary seals are prone to corrosion, and frequent replacement of threaded cores will increase production costs.

[0006] In summary, existing technologies have certain limitations. Utility Model Content

[0007] This invention was developed to solve the above-mentioned problems, and its purpose is to provide a cooling connector for a rotating core.

[0008] This utility model provides a cooling joint for a rotating core, characterized by the following features: the joint body is cylindrical, and its interior is provided with a first blind hole, a connecting hole, and a second blind hole from top to bottom along its axial direction. The first blind hole extends to one end of the joint body, and the second blind hole extends to the other end of the joint body. One end of the connecting hole communicates with the first blind hole, and the other end communicates with the second blind hole. The wall of the connecting hole is provided with internal threads. The outer wall of the joint body is provided with a first mounting hole and a second mounting hole, the first mounting hole communicating with the first blind hole, and the second mounting hole communicating with the second blind hole.

[0009] Two quick-connect pipe fittings are installed on the fitting body through the first mounting hole and the second mounting hole, respectively.

[0010] The base is T-shaped, with external threads on the outer wall of its vertical section that mate with internal threads. The diameter of the horizontal section is larger than the diameter of the second blind hole opening, allowing the base to be detachably installed on the connector body and sealing the opening of the second blind hole. The base has a first channel and a second channel that are connected. The first channel communicates with the first blind hole, and the second channel communicates with the second blind hole and is positioned opposite to the second mounting hole.

[0011] The connecting rod is cross-shaped. The outer wall of the upper vertical section of the connecting rod is provided with threads and an annular groove located below the threads. A first sealing ring is provided in the annular groove. The lower vertical section of the connecting rod is located in a first blind hole, and the outer wall of the lower vertical section is provided with an annular groove. The groove wall of the annular groove is a spherical cap. The interior of the connecting rod is provided with a through hole along its axial direction.

[0012] The rotary sealing assembly includes an oil seal, multiple bearings, multiple ball-head plungers, and a bearing pressure block, stacked sequentially from bottom to top within a first blind hole. The oil seal and multiple bearings are fitted onto the lower vertical section of the connecting rod. The multiple ball-head plungers are arranged in pairs opposite each other on the outer periphery of the lower vertical section of the connecting rod and engage with an annular groove. The bearing pressure block is annular and fitted onto the lower vertical section of the connecting rod. The outer diameter of the bearing pressure block, matching the diameter of the horizontal section of the connecting rod, is larger than the diameter of the opening of the first blind hole.

[0013] The nozzle has one end passing through a through hole, a first blind hole, and a first channel in sequence before connecting to a second channel. The outer diameter of the nozzle is smaller than the diameter of the through hole but not smaller than the diameter of the first channel.

[0014] The rotary core cooling connector provided by this utility model also has the following features: the second blind hole is a countersunk hole, and a second sealing ring is provided between the horizontal section of the base and the opening of the second blind hole.

[0015] The rotary core cooling joint provided by this utility model also has the following feature: a bearing pad is provided between adjacent bearings.

[0016] The rotary core cooling connector provided by this utility model also has the following feature: a serrated groove is provided on the wall of the first blind hole near its opening, and the ball plunger and bearing pressure block are disposed in the first blind hole through the serrated groove.

[0017] Functions and effects of utility models

[0018] According to the present invention, a rotary core cooling joint, by using an externally connected threaded core, direct contact between the rotary seal and the threaded core can be avoided. This prevents frequent replacements and increased production costs caused by direct contact between the threaded core and the rotary seal. Furthermore, while achieving the rotary sealing function, the threaded core can also perform circumferential rotation and axial movement simultaneously, thus enabling direct connection between the threaded core and external water pipes. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10. Connector body; 11. First blind hole; 12. Connecting hole; 13. Second blind hole; 20. Quick water pipe connector; 30. Base; 31. First channel; 32. Second channel; 40. Connecting rod; 41. Annular groove; 42. Through hole; 50. Rotary sealing assembly; 51. Oil seal; 52. Bearing; 53. Ball plunger; 54. Bearing pressure block; 55. Bearing pad; 60. Nozzle; 70. First sealing ring; 80. Second sealing ring. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments are described in detail with reference to the accompanying drawings.

[0023] Example

[0024] Figure 1 This is a cross-sectional view of the present invention.

[0025] like Figure 1 As shown, this embodiment provides a rotating core cooling connector, including a connector body 10, a water pipe quick connector 20, a base 30, a connecting rod 40, a rotating sealing assembly 50, and a spray pipe 60.

[0026] like Figure 1 As shown, the connector body 10 is columnar, and its interior is provided with a first blind hole 11, a connecting hole 12, and a second blind hole 13 from top to bottom along its axis. The first blind hole 11 extends to one end of the connector body 10, and the second blind hole 13 extends to the other end of the connector body 10. One end of the connecting hole 12 is connected to the first blind hole 11, and the other end is connected to the second blind hole 13. The wall of the connecting hole 12 is provided with internal threads. The outer wall of the connector body 10 is provided with a first mounting hole and a second mounting hole. The first mounting hole is connected to the first blind hole 11, and the second mounting hole is connected to the second blind hole 13.

[0027] In this embodiment, the connector body 10 is preferably made of high-strength alloy copper.

[0028] like Figure 1 As shown, two quick-connect water pipes 20 are installed on the connector body 10 through the first mounting hole and the second mounting hole, respectively.

[0029] like Figure 1 As shown, the base 30 is T-shaped, with an external thread on the outer wall of its vertical section that mates with the internal thread, and the diameter of the horizontal section is larger than the diameter of the opening of the second blind hole 13, so that the base 30 can be detachably installed on the connector body 10 and the opening of the second blind hole 13 is blocked. The interior of the base 30 is provided with a first channel 31 and a second channel 32 that are connected. The first channel 31 is connected to the first blind hole 11, and the second channel 32 is connected to the second blind hole 13 and is positioned opposite to the second mounting hole.

[0030] In this embodiment, the second blind hole 13 is a countersunk hole, and a second sealing ring 80 is provided between the horizontal section of the base 30 and the opening of the second blind hole 13.

[0031] In this embodiment, the vertical segment of the base 30 may be composed of parts with different diameters, such that at least a portion of the vertical segment of the base 30 has a diameter not less than the diameter of the second blind hole 13.

[0032] In this embodiment, the base 30 is preferably made of high-strength alloy copper.

[0033] like Figure 1 As shown, the connecting rod 40 is cross-shaped. The upper vertical section of the connecting rod 40 has a thread and an annular groove located below the thread on its outer wall. A first sealing ring 70 is provided in the annular groove. The lower vertical section of the connecting rod 40 is located in the first blind hole 11, and an annular groove 41 is provided on the outer wall of the lower vertical section. The groove wall of the annular groove 41 is a spherical cap. A through hole 42 is provided inside the connecting rod 40 along its axial direction.

[0034] In this embodiment, the connecting rod 40 is preferably made of chrome-plated 304 stainless steel.

[0035] like Figure 1 As shown, the rotary sealing assembly 50 includes an oil seal 51, multiple bearings 52, multiple ball plungers 53, and a bearing pressure block 54 stacked sequentially from bottom to top within the first blind hole 11. The oil seal 51 and multiple bearings 52 are both sleeved on the lower vertical section of the connecting rod 40. The multiple ball plungers 53 are arranged in pairs on the outer periphery of the lower vertical section of the connecting rod 40 and engage with the annular groove 41. The bearing pressure block 54 is annular and sleeved on the lower vertical section of the connecting rod 40. The outer diameter of the bearing pressure block 54 is larger than the diameter of the opening of the first blind hole 11, which matches the diameter of the horizontal section of the connecting rod 40.

[0036] In this embodiment, a bearing pad 55 is provided between adjacent bearings 52.

[0037] In this embodiment, the number of ball-head plungers 53 is preferably two, so the corresponding annular groove 41 can be deformed into two circular grooves.

[0038] In this embodiment, a serrated groove is provided on the wall of the first blind hole 11 near its opening, and the ball plunger 53 and the bearing pressure block 54 are disposed in the first blind hole 11 through the serrated groove.

[0039] In this embodiment, the oil seal 51 is preferably a skeleton oil seal made of nitrile material.

[0040] In this embodiment, the bearing pressure block 54 is preferably made of 304 stainless steel.

[0041] like Figure 1 As shown, one end of the nozzle 60 passes through the through hole 42, the first blind hole 11, and the first channel 31 in sequence and then connects with the second channel 32. The outer diameter of the nozzle 60 is smaller than the diameter of the through hole 42 and not smaller than the diameter of the first channel 31.

[0042] In this embodiment, the nozzle 60 is preferably made of 304 stainless steel.

[0043] The role and effect of the embodiments

[0044] According to the present invention, a rotary core cooling joint, by using an externally connected threaded core, direct contact between the rotary seal and the threaded core can be avoided. This prevents frequent replacements and increased production costs caused by direct contact between the threaded core and the rotary seal. Furthermore, while achieving the rotary sealing function, the threaded core can also perform circumferential rotation and axial movement simultaneously, thus enabling direct connection between the threaded core and external water pipes.

[0045] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model.

Claims

1. A rotary core cooling adapter, characterized by, include: The connector body is cylindrical, and its interior, from top to bottom and along its axis, has a first blind hole, a connecting hole, and a second blind hole. The first blind hole extends to one end of the connector body, and the second blind hole extends to the other end of the connector body. One end of the connecting hole communicates with the first blind hole, and the other end communicates with the second blind hole. The wall of the connecting hole has internal threads. The outer wall of the connector body has a first mounting hole and a second mounting hole. The first mounting hole communicates with the first blind hole, and the second mounting hole communicates with the second blind hole. Two quick-connect water pipe fittings are installed on the fitting body through the first mounting hole and the second mounting hole, respectively. The base is T-shaped, with an external thread on the outer wall of its vertical section that mates with the internal thread. The diameter of its horizontal section is larger than the diameter of the second blind hole opening, allowing the base to be detachably mounted on the connector body and sealing the opening of the second blind hole. The base has a first channel and a second channel that are connected internally. The first channel communicates with the first blind hole, and the second channel communicates with the second blind hole and is positioned opposite to the second mounting hole. The connecting rod is cross-shaped. The upper vertical section of the connecting rod has threads on its outer wall and an annular groove below the threads. A first sealing ring is provided in the annular groove. The lower vertical section of the connecting rod is located within a first blind hole, and its outer wall has an annular groove with a spherical wall. A through hole is provided inside the connecting rod along its axial direction. The rotary sealing assembly includes an oil seal, multiple bearings, multiple ball plungers, and a bearing pressure block, stacked sequentially from bottom to top within the first blind hole. The oil seal and the multiple bearings are all fitted onto the lower vertical section of the connecting rod. The multiple ball plungers are arranged in pairs opposite each other on the outer periphery of the lower vertical section of the connecting rod and engage with the annular groove. The bearing pressure block is annular and fitted onto the lower vertical section of the connecting rod. The outer diameter of the bearing pressure block, matching the diameter of the horizontal section of the connecting rod, is larger than the diameter of the opening of the first blind hole. The nozzle has one end passing through the through hole, the first blind hole, and the first channel in sequence, and then communicating with the second channel. The outer diameter of the nozzle is smaller than the diameter of the through hole and not smaller than the diameter of the first channel.

2. The rotary core cooling joint according to claim 1, characterized in that: wherein The second blind hole is a countersunk hole, and a second sealing ring is provided between the horizontal section of the base and the opening of the second blind hole.

3. The rotary core cooling joint according to claim 1, characterized in that: wherein, Bearing pads are provided between adjacent bearings.

4. The rotary core cooling joint according to claim 1, characterized in that: wherein A serrated groove is provided on the wall of the first blind hole near its opening, and the ball plunger and the bearing block are disposed in the first blind hole through the serrated groove.

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