Die cavity penetrating into die cavity and cooled by die locking ring and die cavity assembly

Abstract

The invention discloses a die cavity and a die cavity assembly penetrating into a die cavity die locking ring for cooling, the die cavity comprises the die cavity die locking ring and a die cavity body, a die lip mounting position and a die cavity inner cavity are arranged in the die cavity, the die lip mounting position extends inwards from the end face of the die cavity die locking ring, and the die cavity inner cavity extends to the end face of the die cavity body from the die lip mounting position. The mold cavity cooling water channel is arranged in the mold cavity, the first end of the inner-layer water channel of the mold cavity cooling water channel extends to be close to the mold lip mounting position, the second end of the inner-layer water channel of the mold cavity cooling water channel extends towards the end face of the mold cavity body, and the mold cavity mold locking ring and the mold cavity body are integrally arranged, so that a sealing ring groove does not need to be machined; therefore, the mold cavity cooling water channel can penetrate into the mold cavity mold locking ring, the area of an inner cavity of a mold cavity can be covered to a large extent, sufficient cooling is provided for the inner cavity of the mold cavity, the better cooling effect and cooling uniformity are achieved, and the forming quality of a bottle blank is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of mold cavity structures, and in particular relates to a mold cavity and a mold cavity component with a mold locking ring deep into the mold cavity for cooling. Background Art

[0002] The existing mold cavity structure is usually formed by combining a mold cavity and a mold cavity locking ring. The existing technology has at least the following problems: 1. In order to prevent the cooling medium from entering the molding cavity through the gap between the two and affecting the molding of the molded product, it is necessary to install a sealing ring between the mold cavity and the mold cavity locking ring. In order to reserve the processing position of the sealing ring groove, it is necessary to retain a certain distance of axial space at the end of the mold cavity, generally in the range of 6 to 8 mm; and in order to improve the cooling efficiency of the preform, a spiral cooling water channel is usually formed on the outer wall of the mold cavity through CNC processing. However, since the mold cavity needs to reserve the processing position of the sealing ring groove, the processing position of the sealing ring groove cannot be processed during the processing of the cooling water channel. As a result, this part of the area cannot be covered by the cooling water channel, affecting the cooling effect and cooling uniformity of the mold cavity, and thus affecting the molding quality of the preform.

[0003] 2. A cooling structure is provided on the outer wall of the mold cavity. The cooling structure includes a plurality of annular fins protruding from the outer wall of the mold cavity. A cooling water channel is formed on the outer wall of the mold cavity through the spacing effect of the plurality of annular fins. However, the existing mold cavity cooling structure has the following disadvantages: since the fins occupy a large area of the outer wall of the mold cavity, the area where the fins are located is not covered by the cooling water channel during the flow of the cooling medium through the cooling water channel, resulting in a large area on the molding surface that is not fully cooled; this affects the cooling effect and cooling uniformity of the cooling medium on the mold cavity, thereby affecting the molding quality of the bottle blank. Summary of the Invention

[0004] In order to overcome at least some of the deficiencies in the prior art, the present invention provides a mold cavity and a mold cavity assembly with a deep-cavity locking ring for cooling.

[0005] The present invention provides a technical solution for cooling a mold cavity with a locking ring deep into the mold cavity: A mold cavity with a deep mold cavity locking ring for cooling, the mold cavity comprising a mold cavity locking ring and a mold cavity body, a mold lip mounting position and a mold cavity inner cavity provided inside the mold cavity, the mold lip mounting position extending inwardly from the end surface of the mold cavity locking ring, the mold cavity inner cavity extending from the mold lip mounting position to the end surface of the mold cavity body, a mold cavity cooling water channel for cooling the mold cavity inner cavity further provided inside the mold cavity, the mold cavity cooling water channel comprising: an inner water channel, arranged around the outer side of the inner cavity of the mold cavity, with a first end portion extending close to the mold lip mounting position and a second end portion extending toward the end surface of the mold cavity body; a first outer water channel, surrounding and communicating with the outer side of the first end portion of the inner water channel; a first water inlet of the mold cavity, extending inward from the outer wall of the mold cavity body and communicating with the first outer water channel; a second outer water channel surrounding and communicating with the outer side of the second end portion of the inner water channel; The second water inlet of the mold cavity extends inward from the outer wall or end surface of the mold cavity body and is connected with the outer side of the second outer water channel.

[0006] As a further technical solution of the present invention, a flow-disturbing column is provided in the inner water channel.

[0007] As a further technical solution of the present invention, the first outer water channel includes a connected diversion area and a guide area, the guide area surrounds and is connected to the outside of the first end of the inner water channel, and the diversion area extends from the extended end of the first water outlet of the mold cavity toward the direction of the guide area.

[0008] As a further technical solution of the present invention, the mold cavity cooling water channel further includes: a plurality of first transition water channels, sequentially distributed along the outer circumference of the first end portion of the inner water channel, respectively connecting the diversion area with the first end portion of the inner water channel; A plurality of second transition water channels are sequentially distributed along the outer circumference of the second end portion of the inner water channel, and respectively connect the second outer water channel with the second end portion of the inner water channel.

[0009] As a further technical solution of the present invention, the second end portion of the inner water channel is close to or extends to the end surface of the mold cavity body; A plurality of the second transition water channels are provided inside and / or on the end surface of the mold cavity body; The second outer water channel is arranged inside and / or on the end surface of the mold cavity body.

[0010] As a further technical solution of the present invention, there are two second water outlets in the mold cavity, and the two second water outlets in the mold cavity are distributed at an interval of 180 degrees along the circumferential direction.

[0011] Based on the above-mentioned mold cavity with a deep mold cavity locking ring for cooling, the present invention also provides a technical solution for a mold cavity assembly: A mold cavity assembly comprises a mold cavity bottom and the above-mentioned mold cavity; the mold cavity bottom and the mold cavity are independent structures or integrated structures; The interior of the mold cavity bottom is provided with a mold cavity bottom casting and molding area and a mold cavity bottom injection area in sequence between the first end surface and the second end surface of the mold cavity bottom, and the interior of the mold cavity bottom is also provided with a mold cavity bottom cooling channel for cooling the mold cavity bottom casting and molding area; The first end surface of the mold cavity bottom is connected to the end surface of the mold cavity body; The mold cavity bottom cooling channel and the mold cavity cooling water channel are independent of each other or interconnected; when the mold cavity bottom and the mold cavity are an integrated structure, the first end face of the mold cavity bottom and the end face of the mold cavity body are the same surface that virtually divides the mold cavity and the mold cavity bottom.

[0012] As a further technical solution of the present invention, the mold cavity bottom cooling channel includes: A first cooling water channel is provided surrounding the molding section of the casting molding area at the bottom of the mold cavity; A second cooling water channel is provided around the pouring section of the pouring molding area at the bottom of the mold cavity; a third transition water channel, connecting the first cooling water channel and the second cooling water channel; The first water inlet at the bottom of the mold cavity, When the mold cavity bottom cooling channel and the mold cavity cooling water channel are independent of each other, the mold cavity second water inlet extends inward from the outer wall of the mold cavity body and is connected to the outer side of the second outer water channel, and the mold cavity bottom first water inlet extends inward from the outer wall of the mold cavity bottom and is connected to the first cooling water channel; When the mold cavity bottom cooling channel and the mold cavity cooling water channel are connected to each other, the mold cavity second water inlet extends inward from the end surface of the mold cavity body and is connected to the outer side of the second outer water channel, and the mold cavity bottom first water inlet docks with the mold cavity second water inlet, extends inward from the first end surface of the mold cavity bottom and is connected to the first cooling water channel; The second water inlet at the bottom of the mold cavity extends inward from the outer wall of the bottom of the mold cavity and is connected with the outer side of the second cooling water channel.

[0013] As a further technical solution of the present invention, when the first water inlet at the mold cavity bottom extends inward from the first end surface of the mold cavity bottom and is connected to the first cooling water channel, the first water inlet at the mold cavity bottom extends along the shape of the molding section of the casting molding area of the mold cavity bottom; The third transition water channel extends along the shape of the molding section of the casting molding area at the bottom of the mold cavity.

[0014] As a further technical solution of the present invention, the third transition water channel and the second water outlet at the bottom of the mold cavity are distributed at 180° intervals along the circumferential direction, and the first water outlet at the bottom of the mold cavity and the third transition water channel are distributed at 180° intervals along the circumferential direction.

[0015] The beneficial effect of the present invention is: by arranging a mold cavity cooling water channel inside the mold cavity, and the first end of the inner layer water channel of the mold cavity cooling water channel extends to near the mold lip mounting position, and the second end extends toward the end face of the mold cavity body, the mold cavity locking ring and the mold cavity body are integrally arranged, and there is no need to process the sealing ring groove, so that the mold cavity cooling water channel can be set deep into the mold cavity locking ring, and can cover the area of the mold cavity inner cavity to a large extent, provide sufficient cooling for the mold cavity inner cavity, achieve better cooling effect and cooling uniformity, and ensure the molding quality of the bottle blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an exploded view of the mold cavity assembly of this embodiment; Figure 2 Schematic diagram of the internal structure of the mold cavity of this embodiment; Figure 3 This is a schematic structural diagram of the mold cavity cooling water channel of this embodiment; Figure 4 1 is a top view of the bottom of the mold cavity of this embodiment; Figure 5 for Figure 4 Cross-section view of the middle section AA; Figure 6 This is a schematic structural diagram of the cooling water channel at the bottom of the mold cavity in this embodiment. DETAILED DESCRIPTION

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] like Figures 1 to 6 As shown, this embodiment discloses a mold cavity with deep mold cavity locking ring cooling, the mold cavity 1 includes a mold cavity locking ring 11 and a mold cavity body 12, the mold cavity 1 is provided with a mold lip mounting position 13 and a mold cavity inner cavity 14, the mold lip mounting position 13 extends inward from the end surface of the mold cavity locking ring 11, and the mold cavity inner cavity 14 extends from the mold lip mounting position 13 to the end surface of the mold cavity body 12, the mold cavity 1 is further provided with a mold cavity cooling water channel for cooling the mold cavity inner cavity 14, the mold cavity cooling water channel includes a mold cavity first water port 151, a first outer water channel 152, an inner water channel 154, a second outer water channel 156 and a mold cavity second water port 157 The inner water channel 154 is arranged around the outside of the inner cavity 14 of the mold cavity, with the first end extending to near the mold lip mounting position 13 and the second end extending toward the end face of the mold cavity body 12; the first outer water channel 152 surrounds and is connected to the outside of the first end of the inner water channel 154; the first water outlet 151 of the mold cavity extends inward from the outer wall of the mold cavity body 12 and is connected to the first outer water channel 152; the second outer water channel 156 surrounds and is connected to the outside of the second end of the inner water channel 154; the second water outlet 157 of the mold cavity extends inward from the outer wall or end face of the mold cavity body 12 and is connected to the outside of the second outer water channel 156. The mold cavity 1 is integrally formed through 3D printing technology, so that the mold cavity locking ring 11 and the mold cavity body 12 are integrally formed. There is no assembly gap, no need to reserve a processing position for the sealing ring groove 25, and no other processing restrictions. The mold cavity cooling water channel can extend along the mold cavity inner cavity 14 to the inside of the mold cavity locking ring 11. The mold cavity cooling water channel can cover the area of the mold cavity inner cavity 14 to a large extent, provide sufficient cooling for the mold cavity inner cavity 14, achieve better cooling effect and cooling uniformity, and ensure the molding quality of the bottle blank.

[0021] Preferably, spoiler columns 158 are provided in the inner water channel 154 to disturb the water flow, maintaining a high turbulent state, thereby maintaining a high convective heat transfer coefficient and maintaining a rapid and uniform cooling effect. The spoiler columns 158 extend radially inclined or parallel. The cross-section of the spoiler columns 158 can be circular, teardrop-shaped, or polygonal. The number and density of the spoiler columns 158 in the inner water channel 154 can be adjusted as needed. The provision of spoiler columns 158 in the inner water channel 154 has the following functions: 1. The cooling medium tends to form laminar flow when flowing in the inner water channel 154. The low-velocity layer close to the wall of the inner water channel 154 will hinder heat transfer. The spoiler 158 creates turbulence, destroying the low-velocity layer of the laminar flow, allowing the cooling medium to contact the wall more fully. At the same time, the turbulence increases the degree of hot and cold mixing of the cooling medium, accelerating the transfer of heat from the high-temperature wall to the cooling medium, thereby improving the heat exchange efficiency. 2. The spoiler column 158 itself is a raised structure that can increase the surface area of the inner wall of the inner water channel 154, providing more heat dissipation contact points, and indirectly improving the heat dissipation capacity of the inner water channel 154; 3. The spoiler column 158 can stir the cooling medium, reduce local hot spots, and avoid uneven temperature distribution caused by stagnation of the cooling medium.

[0022] Preferably, the spoiler columns 158 in the inner water channel 154 are distributed in several circles along the axial direction, and adjacent circles of spoiler columns 158 are staggered in the circumferential direction, so that the cooling medium maintains a high turbulent state when flowing in the inner water channel 154.

[0023] The cooling medium can flow in the cooling water channel of the mold cavity in the following two ways: The water flows in from the first water inlet 151 of the mold cavity and flows out from the second water inlet 157 of the mold cavity; at this time, the first water inlet 151 of the mold cavity serves as the water inlet; 2. Flow in from the second water inlet 157 of the mold cavity and out from the first water inlet 151 of the mold cavity; at this time, the first water inlet 151 of the mold cavity serves as the water outlet.

[0024] Specifically, the first outer water channel 152 is disposed between the outer wall of the mold cavity body 12 and the inner water channel 154. The first outer water channel 152 includes a connected diversion region 1521 and a guide region 1522. The diversion region 1521 extends from the extended end of the first water inlet 151 of the mold cavity toward the guide region 1522. When the first water inlet 151 of the mold cavity serves as a water inlet, the diversion region 1521 serves to divert the cooling medium. When the first water inlet 151 of the mold cavity serves as a water outlet, the diversion region 1521 serves to converge the cooling medium. The guide region 1522 surrounds and is connected to the outside of the first end of the inner water channel 154. Preferably, the diversion region 1521 is an overall hollow oblique truncated cylindrical structure. From the extended end of the first water inlet 151 of the mold cavity to the guide region 1522, the curvature of the diversion region 1521 along the circumferential direction gradually increases, thereby better achieving the functions of diversion and convergence.

[0025] Specifically, the mold cavity cooling water channel further includes a plurality of first transition water channels 153 and a plurality of second transition water channels 155. The plurality of first transition water channels 153 are sequentially distributed along the outer circumference of the first end of the inner water channel 154, and the plurality of first transition water channels 153 respectively connect the diversion area 1522 with the first end of the inner water channel 154. The plurality of second transition water channels 155 are sequentially distributed along the outer circumference of the second end of the inner water channel 154, and the plurality of second transition water channels 155 respectively connect the second outer water channel 156 with the second end of the inner water channel 154. Preferably, the plurality of first transition water channels 153 extend radially and are equiangularly distributed along the circumference; the plurality of second transition water channels 155 extend radially and are equiangularly distributed along the circumference.

[0026] Specifically, the second end of the inner water channel 154 is close to or extends to the end face of the mold cavity body 12. When the second end of the inner water channel 154 extends to the end face of the mold cavity body 12 away from the mold cavity locking ring 11, the second end of the inner water channel 154 is sealed by the mold cavity bottom 2. The inner water channel 154 is constructed by surrounding the outside of the mold cavity inner cavity 14, and the inner water channel 154 is formed based on 3D printing technology. It can extend along the mold cavity inner cavity 14 to the interior of the mold cavity locking ring 11, thereby providing sufficient cooling effect for the mold cavity inner cavity 14. At the same time, the inner cavity water channel is formed along the mold cavity 1 through 3D printing, and there is no need to process spiral fins on the outer wall of the mold cavity 1 to construct the mold cavity cooling water channel. This solves the problem of the traditional mold cavity 1 structure that the outer wall of the mold cavity 1 requires fins to form the mold cavity cooling water channel. The fins occupy a large amount of space on the outer wall of the mold cavity 1, and there is a large area in the mold cavity 14 that is not covered by the mold cavity cooling water channel, resulting in low cooling effect and cooling uniformity.

[0027] Specifically, a plurality of second transition water channels 155 are provided inside and / or on the end surface of the mold cavity body 12. The second transition water channels 155 are specifically formed in the following two ways: When the second end of the inner water channel 154 is disposed close to the end surface of the mold cavity body 12 away from the mold cavity locking ring 11 , the second transition water channel 155 is formed by a channel disposed inside the mold cavity body 12 ; When the second end of the inner water channel 154 extends to the end face of the mold cavity body 12 away from the mold cavity locking ring 11, the second transition water channel 155 is formed by the notch on the end face of the mold cavity body 12 away from the mold cavity locking ring 11 and the mold cavity bottom 2 sealing.

[0028] Specifically, the second outer water channel is provided inside and / or on the end surface of the mold cavity body. There are two specific ways to form the second outer water channel: When the second end of the inner water channel 154 is disposed close to the end surface of the mold cavity body 12 away from the mold cavity locking ring 11 , the second outer water channel 156 is formed by a channel disposed inside the mold cavity body 12 ; When the second end of the inner water channel 154 extends to the end face of the mold cavity body 12 away from the mold cavity locking ring 11, the second outer water channel 156 is formed by the groove on the end face of the mold cavity body 12 away from the mold cavity locking ring 11 and the mold cavity bottom 2 sealing.

[0029] Specifically, the second cavity water inlet 157 is disposed between the second outer water channel 156 and the outer wall of the cavity body 12. The second cavity water inlet 157 extends to the end surface of the cavity body 12 away from the cavity clamping ring 11 to form an opening, which is connected to the cooling water channel of the cavity bottom 2 through the opening. Preferably, since in a conventional cavity plate 3, the configured first cavity water inlet 151 and the second cavity bottom water inlet 245 may be arranged on the same side or on opposite sides at 180 degrees, in order to enable the cavity 1 to adapt to these two situations, two second cavity water inlets 157 are provided. The two second cavity water inlets 157 are distributed 180 degrees apart along the circumferential direction to adapt to the cooling water channels of different cavity bottoms 2, thereby improving the adaptability of the cavity 1.

[0030] Based on the above-disclosed mold cavity with a deep mold cavity locking ring cooling, this embodiment also discloses a mold cavity assembly, including a mold cavity bottom 2 and the above-mentioned mold cavity 1, the mold cavity bottom 2 and the mold cavity 1 are independent structures or integrated structures; the interior of the mold cavity bottom 2 is provided with a mold cavity bottom casting and molding area and a mold cavity bottom injection area 23 in sequence between the first end face and the second end face of the mold cavity bottom 2, and the interior of the mold cavity bottom 2 is also provided with a mold cavity bottom cooling channel for cooling the mold cavity bottom casting and molding area; the first end face of the mold cavity bottom 2 is connected to the end face of the mold cavity body 12; the mold cavity bottom cooling channel and the mold cavity cooling water channel are independent of each other or interconnected. Preferably, the mold cavity bottom 2 is integrally formed by 3D printing technology. When the mold cavity bottom 2 and the mold cavity 1 are an integrated structure, the first end face of the mold cavity bottom 2 and the end face of the mold cavity body 12 are the same surface that virtually divides the mold cavity 1 and the mold cavity bottom 2.

[0031] The mold cavity bottom cooling channel includes a first water inlet 241, a first cooling water channel 242, a third transition water channel 243, a second cooling water channel 244 and a second water inlet 245 at the mold cavity bottom that are sequentially connected. The first cooling water channel 242 is arranged around the molding section 21 of the mold cavity bottom casting and molding area; the second cooling water channel 244 is arranged around the casting section 22 of the mold cavity bottom casting and molding area; the third transition water channel 243 connects the first cooling water channel 242 and the second cooling water channel 244; the second water inlet 245 at the mold cavity bottom is connected from the mold cavity bottom The outer wall of 2 extends inward and communicates with the outer side of the second cooling water channel 244. The specific configuration of the first water inlet 241 at the bottom of the mold cavity includes the following two forms: When the mold cavity bottom cooling channel and the mold cavity cooling water channel are independent of each other, the mold cavity second water inlet 157 extends inward from the outer wall of the mold cavity body 12 and communicates with the outer side of the second outer water channel 156, and the mold cavity bottom first water inlet 241 extends inward from the outer wall of the mold cavity bottom 2 and communicates with the first cooling water channel 242; When the mold cavity bottom cooling channel and the mold cavity cooling water channel are interconnected, the mold cavity second water inlet 157 extends inward from the end face of the mold cavity body 12 and is connected to the outside of the second outer water channel 156, and the mold cavity bottom first water inlet 241 docks with the mold cavity second water inlet 157, extends inward from the first end face of the mold cavity bottom 2 and is connected to the first cooling water channel 242. Preferably, the mold cavity bottom first water inlet 241 extends along the shape of the molding section 21 of the mold cavity bottom casting and molding area; the third transition water channel 243 extends along the shape of the molding section 21 of the mold cavity bottom casting and molding area, so that the mold cavity bottom first water inlet 241 and the third transition water channel 243 can both provide a uniform cooling effect for the mold cavity bottom molding area 21. When there are two mold cavity second water inlets 157, the mold cavity bottom first water inlet 241 is adapted to dock with one of the mold cavity second water inlets 157, and the end face of the mold cavity bottom 2 closes the other mold cavity second water inlet 157. In addition, a sealing ring groove 25 is provided on the end face of the mold cavity bottom 2 between the mold cavity bottom molding area 21 and the mold cavity bottom first water inlet 241. By installing a sealing ring in the sealing ring groove 25, the cooling medium is isolated from entering the mold cavity bottom molding area 21.

[0032] As a preferred embodiment, the third transition water channel 243 and the second water inlet 245 at the bottom of the mold cavity are distributed at 180° intervals along the circumferential direction, and the first water inlet 241 at the bottom of the mold cavity and the third transition water channel 243 are distributed at 180° intervals along the circumferential direction; thereby, when the cooling medium flows through the first cooling water channel 242 and the second cooling water channel 244, it flows in the form of two streams through cooling water channels of the same length and then converges, thereby shortening the length of the cooling medium flowing through the first cooling water channel 242 and the second cooling water channel 244, and improving the cooling effect and cooling uniformity of the mold cavity bottom 2.

[0033] Based on the above-disclosed mold cavity assembly, this embodiment also discloses an injection mold, which includes a movable half mold, a fixed half mold, It includes a molding component and a corresponding template for installing the molding component. The molding component includes at least a mold core, a mold lip and a mold cavity component. The mold core, the mold lip and the mold cavity component are configured to limit part of the surface of the molded product. The template corresponding to the mold cavity component is provided with a channel for conveying a cooling medium. The channel is configured to communicate with the mold cavity cooling water channel and the mold cavity bottom cooling channel.

[0034] The above descriptions are merely preferred embodiments of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the scope of protection of the present invention.

Claims

1. A mold cavity with a deep-cavity clamping ring for cooling, the mold cavity comprising a cavity clamping ring and a cavity body, the interior of the mold cavity being provided with a die lip mounting position and a cavity inner cavity, the die lip mounting position extending inwardly from an end surface of the cavity clamping ring, the cavity inner cavity extending from the die lip mounting position to an end surface of the cavity body, characterized in that: The mold cavity is further provided with a mold cavity cooling water channel for cooling the inner cavity of the mold cavity, and the mold cavity cooling water channel includes: an inner water channel, arranged around the outer side of the inner cavity of the mold cavity, with a first end portion extending close to the mold lip mounting position and a second end portion extending toward the end surface of the mold cavity body; a first outer water channel, surrounding and communicating with the outer side of the first end portion of the inner water channel; a first water inlet of the mold cavity, extending inward from the outer wall of the mold cavity body and communicating with the first outer water channel; a second outer water channel surrounding and communicating with the outer side of the second end portion of the inner water channel; The second water inlet of the mold cavity extends inward from the outer wall or end surface of the mold cavity body and is connected with the outer side of the second outer water channel.

2. The mold cavity with deep mold cavity locking ring cooling according to claim 1, characterized in that: The inner water channel is provided with a flow-disturbing column.

3. The mold cavity with deep mold cavity locking ring cooling according to claim 1, characterized in that: The first outer water channel includes a connected diversion area and a guide area, the guide area surrounds and is connected to the outside of the first end of the inner water channel, and the diversion area extends from the extended end of the first water outlet of the mold cavity toward the guide area.

4. The mold cavity with deep mold cavity locking ring cooling according to claim 3, characterized in that: The mold cavity cooling water channel also includes: a plurality of first transition water channels, sequentially distributed along the outer circumference of the first end portion of the inner water channel, respectively connecting the diversion area with the first end portion of the inner water channel; A plurality of second transition water channels are sequentially distributed along the outer circumference of the second end portion of the inner water channel, and respectively connect the second outer water channel with the second end portion of the inner water channel.

5. The mold cavity with deep mold cavity locking ring cooling according to claim 4, characterized in that: The second end of the inner water channel is close to or extends to the end surface of the mold cavity body; A plurality of the second transition water channels are provided inside and / or on the end surface of the mold cavity body; The second outer water channel is arranged inside and / or on the end surface of the mold cavity body.

6. The mold cavity with deep-cavity locking ring cooling according to claim 1, characterized in that: There are two second water outlets in the mold cavity, and the two second water outlets in the mold cavity are distributed at an interval of 180 degrees along the circumferential direction.

7. A mold cavity assembly, characterized in that: It comprises a mold cavity bottom and the mold cavity according to any one of claims 1 to 6; the mold cavity bottom and the mold cavity are independent structures or integrated structures; The interior of the mold cavity bottom is provided with a mold cavity bottom casting and molding area and a mold cavity bottom injection area in sequence between the first end surface and the second end surface of the mold cavity bottom, and the interior of the mold cavity bottom is also provided with a mold cavity bottom cooling channel for cooling the mold cavity bottom casting and molding area; The first end surface of the mold cavity bottom is connected to the end surface of the mold cavity body; The mold cavity bottom cooling channel and the mold cavity cooling water channel are independent of each other or communicated with each other.

8. The mold cavity assembly according to claim 7, characterized in that: The mold cavity bottom cooling channel includes: A first cooling water channel is provided surrounding the molding section of the casting molding area at the bottom of the mold cavity; A second cooling water channel is provided around the pouring section of the pouring molding area at the bottom of the mold cavity; a third transition water channel, connecting the first cooling water channel and the second cooling water channel; The first water inlet at the bottom of the mold cavity, When the mold cavity bottom cooling channel and the mold cavity cooling water channel are independent of each other, the mold cavity second water inlet extends inward from the outer wall of the mold cavity body and is connected to the outer side of the second outer water channel, and the mold cavity bottom first water inlet extends inward from the outer wall of the mold cavity bottom and is connected to the first cooling water channel; When the mold cavity bottom cooling channel and the mold cavity cooling water channel are connected to each other, the mold cavity second water inlet extends inward from the end surface of the mold cavity body and is connected to the outer side of the second outer water channel, and the mold cavity bottom first water inlet docks with the mold cavity second water inlet, extends inward from the first end surface of the mold cavity bottom and is connected to the first cooling water channel; The second water inlet at the bottom of the mold cavity extends inward from the outer wall of the bottom of the mold cavity and is connected with the outer side of the second cooling water channel.

9. The mold cavity assembly according to claim 8, characterized in that: When the first water inlet at the mold cavity bottom extends inward from the first end surface of the mold cavity bottom and communicates with the first cooling water channel, the first water inlet at the mold cavity bottom extends along the shape of the molding section of the casting molding area of the mold cavity bottom; The third transition water channel extends along the shape of the molding section of the casting molding area at the bottom of the mold cavity.

10. The mold cavity assembly according to claim 8, characterized in that: The third transition water channel and the second water outlet at the bottom of the mold cavity are distributed circumferentially at intervals of 180°, and the first water outlet at the bottom of the mold cavity and the third transition water channel are distributed circumferentially at intervals of 180°.

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